Abstract: The invention is an apparatus for generating power using inertia of a load in a moving vehicle. The apparatus includes a vessel having a volume that is capable of an expansion and a contraction, and containing a fluid under a pressure. The fluid is released from the vessel as a force is exerted by the load of the vehicle against the vessel. The apparatus includes a reservoir, operably connected to the vessel by fluid conduit. The reservoir contains the fluid under pressure until an optimum pressure is reached at which point the reservoir releases the fluid to a power generator. The power generator then generates electrical power. Excess fluid released from the power generator then returns to the vessel.

Abstract: A tool for programming a controller of an electric motor by engaging a connection block of the motor and providing high voltage power and communicating programming signals to the controller. The tool includes a body having an interface for engaging the connection block, and internal wiring presenting tool terminals at the interface for making contact with corresponding motor terminals to allow for providing power and communicating signals between the tool and the controller. An energy-limited transformer having an isolated high impedance secondary winding provides both electrical isolation to protect against shock and low energy output to protect against arc flash. Redundant interlocks include a software interlock which allows the power to be present at the interface only during actual programming of the controller. A light ring encircling the body indicates the presence of high voltage and is visible from multiple directions.

Abstract: A controller-integrated rotating electric machine includes a rotating electric machine having a rotor, a stator, and a housing, and a controller having a plurality of switching element modules. Cooling fins having insulating coatings on surfaces thereof facing the switching element modules are bonded to the switching element module. The controller-integrated rotating electric machine of which the cooling fins are electrically insulated by having the cooling fins having the insulating coating on the surfaces facing the switching element modules, so that the electrolytic corrosion between the cooling fins and the heat sinks of the switching element modules is suppressed from occurring.

Abstract: Disclosed herein is a bonded-type laminated core member manufacturing apparatus including an adhesive application unit to apply an adhesive to a material being continuously transferred, and a laminating unit configured to integrate laminar members laminated within a laminating hole by blanking the material, a laminated core member being manufactured by interlayer adhesion between the laminar members, and the laminating unit includes an adhesive hardener to harden the adhesive located between the laminar members so as to integrate the laminar members passing through the laminating hole, and pinchers provided under the adhesive hardener to apply lateral pressure to the laminated core member so as to prevent falling of the laminated core member. Since the laminated core members may be stably extracted, damage to the laminated core member due to falling may be prevented and the laminated core members in an aligned state may be extracted.

Abstract: An electromagnetic motor/generator comprising a flux assembly having at least one coil and at least one magnetic field source separated by a first gap and a second gap and an interference drum which is movable relative to the at least one coil and to the at least one magnetic field source to alternatively position at least one first magnetically permeable section and at least one second magnetically permeable section inside the first and second gaps.

Abstract: A three-phase permanent magnet electric motor-generator includes a stator having a plurality of teeth, each provided with a respective electric winding implemented by a conducting wire and with a respective heading polar expansion, divided into groups each one corresponding to a phase, by obtaining at the same time a reduced short-circuit current. The distance between adjacent polar expansions is the minimum one so as to allow the passage of a conducting wire. By identifying a first magnetic circuit comprising two adjacent teeth, the respective rotor and stator yokes, the thicknesses of the respective permanent magnets and the corresponding air gap, and a second magnetic circuit having two adjacent teeth, the respective rotor yokes, the respective halves of the faced polar expansions of said adjacent teeth and the distance between such polar expansions, the magnetic reluctances of the first and second circuit have the same order of magnitude.

Abstract: Electric motor (100) according to the present invention includes stator (40), rotor (10), and a pair of bearings (30). Stator (40) has stator core (41) which is annularly formed. Rotor (10) is located on the inner circumferential side of stator core (41), and includes shaft (12), rotor core (11), and bonded magnets (14). Bonded magnets (14) are filled in magnet holes (13). Bonded magnets (14) are formed with high density portion (14b) having a high density and low density portion (14c) having a density lower than high density portion (14b). In electric motor (100), center position (11b) of rotor core (11) is located on the side where high density portion (14b) is present with respect to center position (41b) of stator core (41) in the direction of shaft center (12a) of shaft (12).

Abstract: The present invention relates to a magnetic gear comprising a first magnetic rotor with a first shaft; and a second magnetic rotor with a second shaft; a support structure, with a first end shield and a second end shield connected by a stat or support element. A first bearing attached to the first end shield supports the first shaft and a second bearing supports the second shaft. The first and second magnetic rotors are displaced in axial direction from each other in an axial gap; and the first shaft and shaft are approximately aligned in opposite axial directions; and a plurality of magnetic flux conductors encircles the first and second magnetic rotors, thereby conducting magnetic flux from the first magnetic rotor to the second magnetic rotor. The magnetic gear comprises a dividing wall arranged in the axial gap between the first magnetic rotor and the magnetic second rotor, to separate a first chamber from a second chamber.

Abstract: A magnetic coupling rotor includes permanent magnets arranged at equal angular spacings about its axis of rotation, wherein they respectively face radially inwardly and radially outwardly with their pole faces, of which a respective one bears against a backiron body of ferromagnetic material. The backiron body is a cylindrical ring with smooth peripheral surfaces. Provided for the permanent magnets is a holding device comprising a not or only weakly magnetizable injection-moldable material in the form of a rotary-symmetrical body having recesses for receiving the permanent magnets. The diameters of the holding means and the backiron body are such that they can be fitted together coaxially such that the backiron body at least partially covers the recesses in a radial direction. Thus, formed between it and the holding means is an even number of insertion compartments into which permanent magnets may be inserted.

Abstract: The present invention relates to a power transmission apparatus using a magnetic field, the power transmission apparatus comprising a rotor module, a front driver module and a rear driver module, or comprising a rotor module and any one of a front driver module and a rear driver module. The power transmission apparatus generates, using power received from a power applying driving body or power received from a power receiving driving body, rotational power from a combination of an induced magnetic field which the front driver module generates, a rotating magnetic field which the rotor module generates, and a rotating magnetic field which the rotor module generates together with the front driver module and the rear driver module, and acceleratedly rotates to increase the rotational power, thereby transmitting power to the power receiving driving body and to a target object.

Abstract: This invention presents a highly efficient harmonics free DC-AC power inverter using a pair of push-pull switches with feedback loop that acts as a voltage regulator. The feedback loop voltage regulator uses a series-shunt feedback amplifier to regulate the output voltage by amplifying the error signal between a pure sine wave referenced signal and the measured output voltage signal. A step-up low power transformer is used to step-up the triggering pulse at gates of the push-pull solid state switches to the desired rated output voltage so that the output voltage becomes harmonic free sine wave, but high voltage feedback amplifier, if feasible, maybe used without using the transformer. The reference signal may be synchronized with the grid for on grid applications, but it can also be used for stand alone loads.

Abstract: A method includes comparing, by a voltage-second (VS) controller, a first duty cycle used to control a first switch at a primary side of a power transformer of a DC-to-DC converter with a threshold. The method further includes if a value of the first duty cycle is less than the threshold, controlling, by the VS controller, a second duty cycle used to control a second switch at a secondary side of the power transformer, and maintaining a voltage level at an output voltage node at a non-zero value, and if the value of the first duty cycle is greater than the threshold, controlling, by an output voltage loop, the second duty cycle based on the first duty cycle, and monotonically increasing the voltage level the at the output voltage node from the non-zero value to a predetermined value.

Abstract: In a step-up circuit, which is an electronic control device, changes in current caused by a current rise when stepping up is started and a current drop when stepping up is stopped generate magnetic induction noise due to fluctuations in the electromagnetic induction voltage in signal lines around the step-up circuit. The present invention is a step-up circuit for stepping up by current control, wherein the step-up circuit is provided with a plurality of target current values for retaining a step-up current so that the current is raised in a stepwise manner when stepping up is started and dropped in a stepwise manner when stepping up is stopped. The present invention reduces electromagnetic induction noise generated by the changes in current when stepping up is started and when stepping up is stopped.

Abstract: A high-voltage filter for an alternating-current (AC) to direct current (DC) power adapter of the type having a rectifier providing an internal ground and a high voltage DC, the high voltage DC coupled to drive a DC-DC converter providing a power adapter output, the high voltage filter coupled to filter the high voltage DC, has a first capacitor coupled between the high-voltage DC and an intermediate node. A second capacitor is coupled between the intermediate node and the internal ground. A source follower transistor has a drain coupled to the high-voltage and a source coupled to the intermediate node, with gate coupled to a reference supply. In a particular embodiment, the reference supply has a resistor coupled between the high voltage DC and the gate of the source follower, and at least one zener diode coupled between the gate of the source follower and internal ground.

Abstract: A power converter including a load transient response control module and associated method for controller the power converter. The load transient response control module detects a deviation of an output voltage of the power converter from a desired value of the output voltage and compares the deviation with a first threshold to provide a load response control signal indicating whether load transient change occurs. If the deviation is lower than the first threshold, a clock signal of the power converter is reset and a main switch of the power converter is maintained on during the period when the deviation is lower than the first threshold.

Abstract: A voltage regulator includes a first feedback circuit, a second feedback circuit, and a feedback signal adaptive circuit. The first voltage feedback circuit includes an amplifier that is configured to generate a compensation signal according to a feedback signal from an output of the voltage regulator and a reference voltage, while the second voltage feedback circuit includes a comparator that is configured to generate a PWM signal to drive a switch circuit in which the comparator initiates the PWM pulse when the feedback voltage goes lower than the compensation signal and ends the PWM pulse when the sum of the feedback signal and a ramp signal exceeds the sum of the compensation signal and a threshold signal. The feedback signal adaptive circuit modifies the feedback signal according to changes in an input voltage of the voltage regulator and a control signal.

Abstract: A DC-DC converter includes a control unit. When switching from an increasing operation to a first operation, the control unit increases an on time in the increasing switch at a beginning of the first operation longer than an end of the increasing operation. When switching from the first operation to the increasing operation, the control unit decreases the on time in the increasing switch at a beginning of the increasing operation shorter than an end of the first operation. When switching from the second operation to the decreasing operation, the control unit decreases an off time in the decreasing switch at a beginning of the decreasing operation shorter than an end of the second operation. When switching from the decreasing operation to the second operation, the control unit increases the off time in the decreasing switch at a beginning of the second operation longer than an end of the decreasing operation.

Abstract: A two-phase interleaved DC-DC converter includes a first and second switched capacitor sub-converter each including a plurality of switching devices and a flying portion coupling to a switching node. The switching node of each of the first and second switched capacitor sub-converters are coupled together to form a common node and an inductor is coupled between the common node and the output node. The two-phase interleaved DC-DC converter may operate at a non-resonant, quasi-resonant or resonant mode of operation.

Abstract: The present invention provides a dual constant time buck-boost switching regulator, and a control circuit and a method thereof. The buck-boost switching regulator converts an input voltage to an output voltage and it includes a buck circuit and a boost circuit. The buck circuit includes an inductor, a buck power switch and a buck power device. The boost circuit includes the inductor, a boost power switch and a boost power device. The present invention controls the buck power switch to be OFF by a constant OFF time in the buck conversion mode, and controls the boost power switch to be ON by a constant ON time in the boost conversion mode. An offset signal ensures that the buck-boost regulator operates only in pure buck conversion mode and pure boost conversion mode, but does not need to operate in a buck-boost conversion mode.

Abstract: A power supply apparatus includes a flyback converter and a controller. The controller generates, in response to an output voltage generated by the flyback converter and stabilized at a selected one of a plurality of voltage values, a control signal associated with the selection of the voltage values. Based at least on the output voltage and the control signal, the controller generates a feedback voltage associated with loading of the power supply apparatus, and controls a switch of the flyback converter in such a manner that the switch operates at a switching frequency associated with the feedback voltage, and that at least one of the feedback voltage or a curve of the switching frequency with respect to the feedback voltage changes due to the control signal.

Abstract: A power converter controller and methods for its operation are provided that can control a self-oscillating power converter that uses a Bipolar Junction Transistor (BJT) as a switch by manipulating the current flowing in a control winding. The controller is able to determine the optimum time to remove a short circuit applied to the control winding, as well as being able to determine the optimum time to pass current through the control winding. The controller can further draw power from the power converter using the control winding. The controller is capable of maintaining the midpoint voltage of the power converter in the case that the converter has more than one switch. The controller estimates the output power of the converter without requiring a connection to the secondary side of the converter transformer. The controller further controls entry and exit into a low-power mode in which converter oscillations are suppressed.

Abstract: An overcurrent protection control circuit detects a low set value of an output voltage from a drop in voltage at a VCC terminal below a reference voltage. The overcurrent protection control circuit switches an overcurrent limit value from a high reference voltage to a low reference voltage and switches a maximum limit value of a switching frequency from a high first maximum switching frequency to a low second maximum switching frequency. By doing so, an overcurrent limit value of a switching element and a maximum limit value of a switching frequency are set to low values and a rise in output current is suppressed.

Abstract: A multi-mode controller applied to a power converter includes a detection range generation module and a gate signal generation unit. The detection range generation module is used for generating a comparison voltage according to a reference current, and generating a detection signal according to the comparison voltage and a first reference voltage. When the detection signal is disabled by a zero-crossing signal, the gate signal generation unit generates a gate control signal corresponding to a quasi-resonant mode of the power converter according to the zero-crossing signal; and when the detection signal is disabled by a continuous-conduction mode signal generated by the detection range generation module according to the comparison voltage and a second reference voltage, the gate signal generation unit generates the gate control signal corresponding to a continuous-conduction mode of the power converter according to the continuous-conduction mode signal.

Abstract: A semiconductor device including a first filter, a second filter, a first comparison circuit, a second comparison circuit and an AND circuit. The first filter generates a first output signal by performing first filtering processing on an input signal of the semiconductor device, the first filter having a first time constant. The second filter generates a second output signal by performing second filtering processing on the first output signal, the second filter having a second time constant different from the first time constant. The first comparison circuit compares the first output signal with a first threshold voltage, to thereby output a first level signal. The second comparison circuit compares the second output signal with a second threshold voltage, to thereby output a second level signal. The AND circuit performs an AND operation on the first and second level signals.

Abstract: A power supply apparatus includes a trans circuit configured to convert an input voltage into an output voltage by adjusting switching of the input voltage; an output voltage detector configured to detect the output voltage; a compensator configured to generate a control value controlling a duty ratio of the switching such that a value of the detected output voltage coincides with a target value for the output voltage; an input voltage detector configured to detect the input voltage; an estimator configured to estimate an allowed range of the control value in accordance with the target value and a value of the detected input voltage; and an adjuster configured to adjust the control value so as to stop the switching when the control value falls outside the allowed range.

Abstract: An apparatus for transforming alternating electrical energy supplied by alternating electrical energy supply means to appliances using alternating electrical energy through electrical transformation means operatively interposed between and electromagnetically coupled to said alternating electrical energy supply means and to said appliances using alternating electrical energy, said electrical transformer means being of the two-stage type and comprising a first electrical transformer assembly and a second electrical transformer assembly, at least one permanent magnet being associated with said first electrical transformer assembly and positioned with respect to said first electrical transformer assembly in such a way that, when said alternating electrical energy supply means are switched on, the permanent magnetic field produced by said at least one permanent magnet is added to and amplifies the alternating electromagnetic field produced by said electrical transformer means, thereby amplifying the electrical en

Abstract: A rectifier, a booster circuit configured to boost an output voltage of the rectifier, a smoothing capacitor configured to smooth an output voltage of the booster circuit, and an inverter circuit configured to convert a DC voltage of the smoothing capacitor to an AC voltage and drive a motor forming a part of a device supplied with the voltage after the conversion, are included. In addition, a reactor, a first backflow prevention element, a second backflow prevention element, a first switching element, a second switching element, an intermediate capacitor, and a controller configured to control the first switching element and the second switching element, are included.

Abstract: A DC power supply device includes a rectifier circuit, a conversion circuit and a control circuit. Conversion circuit includes a first capacitor, a first series circuit, a second series circuit, a third series circuit, a second diode and a Zener diode. First series circuit includes a first inductor and a switching element connected in series with each other. Second series circuit includes a second capacitor and a second inductor connected in series with each other. Third series circuit includes a first diode and a third capacitor connected in series with each other. First series circuit is electrically connected between both ends of first capacitor. Second series circuit is electrically connected in parallel with switching element. A cathode of Zener diode is connected with a connection point of first inductor and second capacitor. Zener diode has a Zener voltage larger than an output voltage of conversion circuit.

Abstract: In the present invention, a lower arm control substrate, an insulation material and an upper arm control substrate are layered to be arranged in this order on a top surface of a small-sized power module. An upper arm main region and a lower arm main region are arranged to overlap the insulation material in plan view, and large parts of the upper arm main region and the lower arm main region overlap each other in plan view. The upper arm control substrate and the upper arm control substrate are configured with substrates of the same structure and the lower arm control substrate has a positional relation with the upper arm control substrate so as to be rotated by 180° from the upper arm control substrate in a horizontal direction.

Abstract: A three-level photovoltaic inverter pulse width modulation method and a three-level photovoltaic inverter pulse width modulator. The method includes: when it is detected that potential safety hazards exist in a three-level photovoltaic inverter, switching the pulse width modulation mode of the three-level photovoltaic inverter into a 13-vector space vector pulse width modulation mode, to solve the fault or abnormal problems in the three-level photovoltaic inverter such as midpoint potential offset or excessively large common mode leakage current formed when the ground stray capacitance of a photovoltaic assembly is large, wherein according to the 13-vector SVPWM mode, 12 short vectors in 27 on-off state vectors of the three-level photovoltaic inverter are abandoned, and only six long vectors, six middle vectors and three zero vectors are reserved.

Abstract: The present invention relates to a voltage converter comprising a primary side which has a full bridge device which is configured for the purpose of receiving a first DC voltage from a voltage source at a first amplitude and to transmit same to a primary coil arranged in the primary side, comprising a control unit which is designed for the purpose of controlling the full bridge device using PWM signals having phases shifted counter to one another, wherein the control unit is configured to detect an asymmetry in the current supplied to the primary coil based on a current profile in the primary coil, wherein the control unit is designed to compensate for a detected asymmetry by adjusting the PWM signals. The present invention further relates to a corresponding method.

Abstract: A semiconductor device is provided. The semiconductor device includes a substrate, a contact layer, and an active layer. The contact layer is located on the substrate. The contact layer and a movable object perform a relative motion. The active layer is located between the contact layer and the substrate.

Abstract: According to an embodiment, a microelectromechanical systems MEMS transducer includes a deflectable membrane attached to a support structure, an acoustic valve structure configured to cause the deflectable membrane to be acoustically transparent in a first mode and acoustically visible in a second mode, and an actuating mechanism coupled to the deflectable membrane. Other embodiments include corresponding systems and apparatus, each configured to perform various embodiment methods.

Abstract: A magneto-caloric power generation equipment comprising at least one magneto-caloric power generation unit; the magneto-caloric power generation unit comprises two supports provided in a correspondingly connected manner; a rotor, a stator and a heating and cooling device; the supports are provided with an axle seat A, the rotor is provided with an axle seat B, an accommodating space is provided between the two supports, and the rotor is provided in the accommodating space; the rotor comprises an annular support, wherein both sides of the annular support are provided with an even number groups of hard magnet fixing grooves; the hard magnet fixing grooves of two sides of the annular support are provided in a staggered manner, and an annular accommodating groove is formed in the even groups of hard magnet fixing grooves on the same side of the annular support.

Abstract: A system for levitating a mobile terminal, according to an exemplary embodiment of the present invention, comprises: a levitation unit mounted on a rear surface of the mobile terminal; and a levitation module configured to generate an electromagnetic force to allow the levitation unit to levitate upward, wherein the levitation unit includes a mounting case attachably detachably coupled to the rear surface of the mobile terminal and a first permanent magnet seated on an inside of the mounting case, wherein the levitation module includes: a housing; a cover that covers the housing; a magnet module disposed in the housing to form an electromagnetic field for levitating the levitation unit; and a PCB that includes a control unit connected to the magnet module to control a current supplied to the magnet module, wherein the magnet module includes a plurality of electromagnets that generate an electromagnetic field for making a repulsive force act on the first permanent magnet, and a second permanent magnet that sur

Abstract: A method of operating an electromechanical actuator (EMA) system includes determining a command time remaining for an actuator to attain a commanded position and determining a stop time required to stop movement of the actuator. The command time is compared to the stop time, and an electric motor driving the actuator is decelerated if the stop time is equal to or greater than the command time. An electromechanical actuator system includes an actuator and an electric motor operably connected to the actuator, the electric motor configured to drive movement of the actuator. A controller is operably connected to the electric motor to control operation of the actuator. The controller is configured to determine a command time remaining, determine a stop time, compare the command time to the stop time, and decelerate the electric motor if the stop time is equal to or greater than the command time.

Abstract: A hardware based motor controller may be used to generate chopped signals. The hardware based motor controller may decrease CPU bandwidth needed to perform functions related to motor control. In an aspect of the disclosure, a method and an apparatus are provided. The apparatus may be a motor controller for controlling a brushless motor. The motor controller may include a first carrier generator component for providing a first carrier. The motor controller may also include a first pulse generator component for providing a first pulse at a duty cycle. The first pulse generator component may be coupled to the first carrier generator component. Additionally, the first pulse generator may be configured to combine the first pulse with the first carrier to generate a first output pulse. Additionally, the first pulse generator may also be configured to output the first output pulse to drive a first leg of the brushless motor.

Abstract: An alternator having associated therewith a power and control circuit, the circuit enabling the alternator to continue its operation during either an excessive electrical load or a short circuit; wherein, the circuit is capable of isolating at least one polarity of at least one phase of a power supply to thereby provide power at least for control circuitry.

Abstract: Angular speed of a rotor of an induction motor without an encoder for rotor position and speed sensing is controlled by first sensing stator currents and voltages of the induction motor. A dynamic gain estimator is designed by applying a state transformation to a model of the induction motor. A states of the induction motor is estimated by applying the dynamic gain estimator to the currents and the voltages, and then the state is used to control the angular speed of the rotor of the induction motor.

Abstract: In a motor control device, a velocity feed-forward control portion includes a velocity-side acceleration input portion that outputs received high-order command acceleration as a velocity-side acceleration output; a velocity-side velocity input portion that outputs a received high-order command velocity as a velocity-side velocity output; velocity-side boundary-velocity input portions which are prepared so as to respectively correspond to boundary velocities, and to output velocity-side boundary velocity outputs from the velocity-side boundary-velocity input portions corresponding to the high-order command velocity, the boundary velocities being velocities at boundaries of preset adjacent velocity ranges obtained by dividing a limited velocity range; a velocity-side first weight learning portion that changes velocity-side first learning weights in accordance with a velocity deviation, the velocity-side first learning weights respectively corresponding to velocity-side first outputs; and a velocity-side output

Abstract: A control device for an AC rotary machine includes a magnetic-pole-position correction amount calculation device that calculates a magnetic-pole-position correction amount based on a detection-current vector detected when a voltage application device applies a voltage to the AC rotary machine according to a voltage command and on the voltage command, and stores in a storage device the magnetic-pole-position correction amount as it is associated with the detection-current vector. At normal operation of the AC rotary machine, a voltage-vector command generation device generates a voltage command for normal operation based on the detection-current vector detected by a current vector detection device and the magnetic-pole-position correction amount associated with the detection-current vector.

Abstract: In a current detection apparatus, an arm current detection unit detects each of at least first and second phase currents having respective amplitudes and flowing in a multiphase rotary electric machine based on a potential difference between input and output terminals of the corresponding one of first and second detection switches during the corresponding one of the first and second detection switches being on. A bus current detection unit detects each of at least bus-based first and second phase currents corresponding to the first and second phases of the multiphase rotary electric machine based on a current flowing through one of first and second buses. An amplitude correction unit corrects the first and second phase currents based on the bus-based first and second phase currents such that the amplitudes of the respective first and second phase currents match with each other.

Abstract: When a rectifying duty dr, a discharge duty dc, a voltage between both ends Vc of a capacitor, and a rectified voltage Vrec of an AC voltage are introduced, a virtual DC link voltage in an inverter is expressed by dc·Vc+dr·Vrec. The discharge duty is a time ratio at which a switch is conductive. The rectifying duty has a value obtained by subtracting the discharge duty and a zero voltage duty from 1. The zero voltage duty is a time ratio at which the inverter adopts a zero voltage vector irrespective of the magnitude of a voltage output from the inverter. In a boost chopper, the capacitor is charged during a part of a period during which the virtual DC link voltage is greater than the rectified voltage.

Abstract: The circuit for controlling a rotating three-phase motor of the type having three interconnected motor coils each corresponding to one of three phases employs a plurality of switching circuit components, each connected to the motor to supply current to one of the coils. A signal generator circuit produces in synchronism with the rotation of the motor a variable duty cycle pulse-width modulated signal for each of the switching circuit components. A logic gating circuit is coupled to the signal generator circuit and to the switching components. The logic gating circuit is operative to cause the switching circuit components to selectively place pairs of motor coils in current conducting states such that when the variable duty cycle pulse-width modulated signals are each concurrently in the same logical on-off state, the logic gating circuit supplies a logical off state to each of the switching circuit components.

Abstract: In view of the problem that an existing technique can detect a failure in an arm circuit for each phase and continue motor drive by only a normal phase, but a brake torque is generated due to a closed circuit of the faulty phase, an inverter apparatus for polyphase AC motor drive is provided that includes: a first power supply switching device in a power supply line to an inverter circuit; a second power supply switching device for each phase in the arm circuit of the inverter circuit, and a motor relay switching device in an output path from each phase, wherein the parasitic diodes of the first power supply switching device and second power supply switching device have directional characteristics different from each other, which prevent generation of a closed circuit.

Abstract: Photovoltaic Devices with Sealant Layer and Laminate Assembly for Improved Wet Insulation Resistance A photovoltaic device comprising: a polymeric frame; one or more photovoltaic cells that include one or more electric circus assemblies; one or more connector assemblies comprising: (I) one or more terminals (24), (ii) a connector body disposed about the one or more terminals, and (iii) a sealant layer (28) that is disposed about the connector body (26); wherein the one or more connector assemblies are in electrical communication with the one or more electric circuit assemblies and the one or more electronic circuit assemblies are at least partially encased in the polymeric frame; and wherein the sealant layer has sufficient heat resistance that the sealant layer will not reflow during lamination and/or injection molding.

Abstract: A supporting structure for waterborne photovoltaic power generation is provided. The supporting structure includes at least one floating bracket. The floating bracket includes a floating platform and a plurality of supporting members provided on an upper surface of the floating platform, a ventilation space is provided between at least two adjacent supporting members, whereby the plurality of supporting members is configured to fix a photovoltaic cell panel thereon with a lower surface of the photovoltaic cell panel being separated from the upper surface of the floating platform.

Abstract: A three-directional photovoltaic module connector. The module connector includes first serial connection portion on each side for connecting two adjacent photovoltaic modules together in a serial, end-to-end connection. The module connector also includes a first parallel connection portion for connecting the two serially connected pairs of adjacent photovoltaic modules together in parallel, that is, side-to-side. The module connector further includes a vertical connection portion for attaching a mounting foot to elevate the photovoltaic module connector above a support surface such as a roof.

Abstract: A wiring substrate is configured to have a power generating portion mounted thereto. The wiring substrate includes a land portion and a wire portion. The width of the wire portion is smaller than the width of the land portion.

Abstract: Provided is a solar battery module having an outer edge maintained by a frame, and comprising a group of strings formed by using a plurality of solar battery cells, connecting adjacent solar battery cells in a longitudinal direction by an inter-cell wiring material to form a plurality of strings, and arranging the plurality of strings in a transverse direction, wherein a spacing distance A between the interior of the frame and the frame-side edge of solar battery cells of the outermost string in the group of strings, a spacing distance B between solar battery cells constituting adjacent strings in the group of strings, and a spacing distance C between the solar battery cells in the transverse direction satisfy the relationship {(995A?20C)/1005}<B<{(1005A+20C)/995}. Additionally, an olefinic resin is used in a first sealing member on the light receiving surface side.