Abstract: An LED lighting arrangement on a flexible substrate. The flexible substrate has an adhesive on a first surface. Straps are attached to the first surface of the flexible substrate by the adhesive. Each strap has a first surface, a second surface, and first and second terminals exposed on the first surface. The attachment of each strap to the substrate is with the second surface of the strap adhered to the substrate. LEDs are attached to the straps and coupled to the terminals on the straps. An arrangement of one or more wires is attached to the first surface of the flexible substrate by the adhesive. The wires are connected to the first and second terminals on the first surfaces of the plurality of straps to provide power to the LEDs.

Abstract: A method of configuring an LED driver is disclosed. The LED driver being arranged to provide a supply current to an LED fixture comprising a plurality of LEDs. The method comprises: identifying the LED fixture (LF), sending via a communication network (NTW) a configuration request to a configuration database (DB), receiving configuration data from the configuration database; and configuring the LED driver (LPS) according to the configuration data.

Abstract: An LED driver IC for driving external strings of LEDs comprises a prefix register and a data register connected in series with each other and with the prefix and data registers in other driver ICs. The prefix and data registers of the driver ICs are connected in a daisy chain arrangement with an interface IC. The interface IC loads data identifying a functional latch into the prefix register and data defining a functional condition into the data register of each driver IC. The data in the data register is then transferred to the functional latch to control the functional condition within the LED driver IC.

Abstract: An RF cavity includes a chamber, a conductive wall that encloses the chamber and has an inner side and an outer side, a switch arrangement comprising a plurality of solid-state switches arranged along a circumference of the wall around the chamber, wherein the solid-state switches are connected to the conductive wall such that RF currents are induced in the conductive wall when the switch arrangement is activated, as a result of which RF power is coupled into the chamber of the RF cavity, and a shielding device located on the outer side of the conductive wall, along a circumference of the RF cavity, the shielding device configured to increase the impedance of a propagation path of RF currents along the outer side of the wall such that the RF currents coupled into the wall are suppressed on the outer side of the wall.

Abstract: An HVAC system includes a blower motor and a variable speed motor drive. The variable speed motor drive is configured to receive line power and provide modulated power to the motor. The blower motor is configured to produce airflow in response to the modulated power. A unit controller is configured to bypass the variable speed motor drive to provide the line power directly to the blower motor in the event that a measured airflow is less than a predetermined value.

Abstract: A servo device 30 includes: a control portion 31 for driving and controlling a drive mechanism 32 by receiving a control signal from a transmitter 10, and by transforming the control signal into a drive signal corresponding to characteristic data previously stored in a memory portion 35. The control portion 31 includes: a signal processing portion 33 for discriminating whether the control signal is a maneuver signal or a characteristic data signal; and the memory portion for updating and storing the characteristic data based on the received characteristic data signal when the control signal is discriminated as the characteristic data signal.

Abstract: What is described is a battery management architecture that eliminates previously described problems of the previous solutions and compensates for the extra cost of a cell-balancing circuit. These advantages are achieved by integrating the voltage step-up and balancing functions as well as charging functions inside a single converter topology. Instead of providing the entire output voltage and power, the converter in this configuration is merely assisting the battery by providing a portion of the power delivered to the load, rather than the entirety of the power delivered to the load. This portion of power is proportional to the difference between the output and the battery pack voltages.

Abstract: A sinusoidal signal is superimposed on a current command value of a q-axis (torque shaft) supplied from a host, and according to the resulting current command value, the output voltage of a power converter is controlled. For the calculation of the superimposed signal added to the current command value of the q-axis, with the use of the ripple component information of induced voltage coefficients of the d-axis and q-axis of the rotating coordinate system of a permanent magnet motor, the current command values of the d-axis and q-axis, an average value of induced voltage coefficients of the d-axis, and inductance values of the d-axis and q-axis, the sinusoidal superimposed signal is calculated and added to the above-described current command value of the q-axis.

Abstract: A control system for use with a motor is disclosed. The control system may have a controller that is configured to receive a torque command for the motor and receive a rotor angular velocity signal indicative of an angular velocity of a rotor of the motor. The controller may also be configured to generate a field weakening command by adding a field weakening adjustment signal to the rotor angular velocity signal, and generate a torque voltage command and a flux voltage command based on the torque command and the field weakening command. Further, the controller may be configured to convert the torque voltage command and the flux voltage command into phase voltage commands and output the phase voltage commands.

Abstract: A method for operating a polyphase machine having a pulse-width-modulated inverter includes: determining a setpoint current value respectively for a current in the longitudinal direction and/or the transverse direction based on a specified torque, ascertaining a setpoint voltage value respectively for a voltage in the longitudinal direction and/or the transverse direction with the aid of the setpoint current value and/or of an actual current value determined at the pulse-width-modulated inverter, controlling and/or regulating the polyphase machine corresponding to the ascertained setpoint voltage value. In this context it is provided that, in addition, using a model, a model value is determined respectively for the voltage in the longitudinal direction and/or the transverse direction, the difference between the setpoint voltage value and the model value is ascertained, and in response to the exceeding of a specifiable maximum difference, an error signal is triggered.

Abstract: A motor control apparatus includes a power conversion unit which supplies drive power to a motor, a current detection unit which detects the value of a current flowing from the power conversion unit to the motor, a delta-sigma modulation AD converter which converts the current value into digital data by using a modulation clock as a system clock, and which starts to count the number of clock pulses of the modulation clock upon reception of a reference signal and, when the number of clock pulses counted reaches a predetermined count value, outputs the digital data obtained during a prescribed time interval which contains the reception time of the reference signal, and a command generating unit which generates, using the digital data supplied from the delta-sigma modulation AD converter, a drive command for commanding the power conversion unit to output commanded drive power.

Abstract: A system and method for controlling an alternating current (AC) motor using a Field Programmable Gate Array (FPGA) to read the current and position measurements in an the AC motor, perform digital filtering of the position and current data, provide very precise synchronization of the measured phase current and position data, and output the data to a phase converter for control of the AC motor.

Abstract: A control apparatus for a rotary electric machine has a DC-AC converting circuit with high- and low-potential-side switching elements to compose an inverter. In this apparatus, a connecting/disconnecting circuit is arranged to be electrically opened and closed between the DC-AC converting circuit and a power supply. A determining member determines whether or not the high-potential-side and low-potential-side switching elements have a malfunction. A failsafe performing element opens the connecting/disconnecting circuit and turns on both the high-potential-side and low-potential-side switching elements residing in a part of the inverter, when it is determined that there is caused a malfunction in the switching elements. The turned-on high-potential-side and low-potential-side switching elements realizes a short-circuit state therein.

Abstract: An inverter system for operating an electric motor includes an input port for providing an electrical voltage, a bridge inverter circuit connected downstream from the input port for generating an electrical alternating voltage for the electric motor based on the electrical voltage. The bridge inverter circuit has at least one half-bridge branch including switching elements configured to be open for transferring the electric motor into a freewheeling state, and a decoupling switching element designed for decoupling the at least one half-bridge branch in the freewheeling state of the electric motor from the input port, in order to suppress a reaction of the freewheeling electric motor on the input port.

Abstract: A brushless motor driving circuit includes a battery for supplying a power to the brushless motor driving circuit; a driver circuit; a bridge circuit including a plurality of N-channel FETs; a control unit for rotating a brushless motor by switching the bridge circuit through the driver circuit based on a rotor position detection signal; a floating voltage generator for applying a voltage to a first group of the FETs of the bridge circuit; and a converter which is powered from the battery. The converter has an output connected to an input of the floating voltage generator for the first group of the FETs of the bridge circuit and an input of the driver circuit for a second group of the FETs of the bridge circuit to dedicatedly supply a power to gates of the FETs, and the control unit is powered from the battery without using the converter.

Abstract: An apparatus is provided for controlling operation of an electric motor through use of an additional power storage arrangement connected across the DC busses of a motor drive and controlling the speed of the motor. The additional power storage arrangement includes an additional capacitor arrangement and a rate limiting arrangement in a series circuit relationship with one another.

Abstract: In the inverter device that receives DC power from the DC common bus and drives a load, the configuration is such that the switching element is arranged on the first current path in which current flows through the positive-side DC terminal during powering, the reverse-connected diode is arranged on the second current path in which current flows through the positive-side DC terminal during regeneration, the charging resistor is arranged on the third current path in which current flows through the positive-side DC terminal when the smoothing capacitor of the smoothing unit is initially charged, and the brake resistor is connected externally between the positive-side DC terminals such that the positive-side DC terminal becomes an end whose potential is the same as that of the positive-side bus of the DC common bus.

Abstract: A switched resonant power converter applies AC to an induction motor. The power converter controls the magnitude and phase of the motor current, and tuning the stator flux accordingly in order to control the motor speed. A preprocessor operates on a speed command signal by getting the user speed command input to produce amplitude and phase-related signals for application to inputs of the power converter control.

Abstract: A motor control device including: a following control unit that calculates a pre-correction torque command based on a difference between an operation command signal for commanding an operation of a motor and a detection signal resulting from detecting an operation of the motor; an adder that outputs a post-correction torque command by adding the pre-correction torque command to a correction torque command; and an electric-current control unit that outputs a drive current driving the motor based on the post-correction torque command, wherein the motor control device executes control so that the detection signal matches the operation command signal, and further including: a reference-periodic-signal computation unit; an amplitude/phase estimation unit; and a correction-torque computation unit, so that the correction torque command is updated such that a difference between the correction torque command and the post-correction torque command becomes smaller.

Abstract: A door closer with dynamically adjustable latch region parameters is disclosed. Embodiments of the present invention include a door closer with a control unit to intelligently control a valve to vary the operating characteristics of the door closer as needed. The control unit can repeatedly determine whether a door has reached jamb upon closing. A setting or settings for the latch region of the door can be adjusted when the door does not reach jamb. These adjustments are such that the likelihood of the door reaching jamb upon closing is increased. Jamb successes can also be monitored, so that once there have been enough successful closes, settings can be adjusted to decrease the force on the door so that the latch region parameters are constantly adjusted for changing conditions to achieve closing success with the minimum closing force necessary.

Abstract: A movable unit driving apparatus which drives a movable unit by a motor, the movable unit driving apparatus includes a first detection unit configured to detect that the movable unit passes a first position; a second detection unit configured to detect that the movable unit passes a second position after the first detection unit detects that the movable unit has passed the first position; a first measurement unit configured to measure time from when the first detection unit detects that the movable unit passes the first position to when the second detection unit detects that the movable unit passes the second position; and a setting unit configured to set time from when the movable unit is detected to have passed the second position to when a brake is applied to the motor based on the time measured by the first measurement unit.

Abstract: A programmable robot system includes a robot provided with a number of individual arm sections, where adjacent sections are interconnected by a joint. The system furthermore includes a controllable drive mechanism provided in at least some of the joints and a control system for controlling the drive mechanism. The robot system is furthermore provided with user a interface mechanism including a mechanism for programming the robot system, the user interface mechanism being either provided externally to the robot, as an integral part of the robot or as a combination hereof, and a storage mechanism co-operating with the user interface mechanism and the control system for storing information related to the movement and further operations of the robot and optionally for storing information relating to the surroundings.

Abstract: The present invention relates to a multi output inverter that is adapted to supply mains powered appliances 47-49 and/or poly-phase motors 50, 51.

Abstract: An offline power supply includes a power supply circuit including a primary-side circuit for connecting to a power source, a secondary-side circuit for connecting to a load, and a transformer connecting the primary-side circuit and the secondary-side circuit. A switch operates to selectively connect the primary-side circuit to the power source. A trigger circuit is connected to the secondary-side circuit and has at least one input. The trigger circuit generates an output to selectively operate the switch based on the at least one input.

Abstract: Electrical systems, power supply apparatuses, and power supply operational methods are described.

Abstract: A charging control apparatus mounted on a vehicle connected to an external charging device through a charging connector, for performing control related to charging, includes a voltage sensor for detecting a voltage applied to the charging connector, and a control device for estimating, based on variation in voltage detected by the voltage sensor during a predetermined period of time after the charging connector is connected to the vehicle, variation in voltage applied to the charging connector after a lapse of the predetermined period of time, and determining that a failure has occurred in the external charging device if a degree of separation between the variation in voltage detected by the voltage sensor after the lapse of the predetermined period of time and the estimated variation in voltage is larger than a predetermined value.

Abstract: Charging station for electric vehicles. A network stabilization is achieved by a network frequency measuring device 8 being arranged to acquire a network frequency and to detect a network frequency which deviates from a reference frequency, and a load regulating device 10 being in operational connection with the network frequency device 8 such that, upon a deviation from the reference frequency being detected in the network frequency, the load regulating device 10 regulates the electrical power emitted to an electric vehicle by the charging station 2.

Abstract: In a charging system, an interlock switch is configured to be turned on when a power switch of a vehicle body is turned off and turned off when the power switch is turned on is disposed between a negative terminal of a battery and a second negative input portion. A first positive output portion and a second positive output portion are connected to each other with a coil of a relay circuit installed in the charger body interposed therebetween. A relay switch of the relay circuit in which on and off operations are switched by the coil is connected to the first positive output portion.

Abstract: A two-stage charge equalization apparatus for a series-connected battery string having a two-stage DC-DC converter including a first DC-DC converter; and a second DC-DC converter which is inputted. A battery string is divided into one or more battery modules having a plurality of battery cells connected in series, and a current conversion switch module forms a path of the charge current between the battery module and the second DC-DC converter to allow the charge current to be applied to the particular battery cell composing the battery module and controls an application direction of the charge current. A microprocessor determines a battery cell to be charged of a low-charged battery cell and controls the current conversion switch module to allow the charge current to be applied to the battery cell to be charged.

Abstract: A battery charge/discharge control apparatus for a vehicle capable of driving an electric motor by a battery is provided. Temperature of the battery is detected, temperature history distribution of the battery after start of temperature detection is calculated, and a lifetime workload of the battery is calculated on the basis of this temperature history distribution of the battery. A permissible value of a workload increase rate indicating a workload to increase per unit distance is calculated on the basis of the lifetime workload of the battery and a travel distance of the vehicle. An actual workload increase rate of the battery is compared with the permissible value of the workload increase rate.

Abstract: A controller includes a data accumulation unit that obtains data of an amount of electric power consumed in a residence and accumulates the obtained data a representative pattern creation unit that creates a representative pattern based on the data accumulated in the data accumulation unit, the pattern representatively indicating how the electric power storage device varies in state of charge for its discharging period and a limit value determination unit that determines a limit value to correspond to the pattern.

Abstract: Improved protection for a rechargeable battery from damage by being discharged below a cut-off voltage is provided. The measured voltage of a battery under load is lower than the measured voltage of the battery under no load. As the cut-off voltage for the battery is specified as a no load voltage, comparing the measured voltage of the battery under load to the cut-off voltage would result in stopping use of the battery with useable charge remaining. Through testing, a set of relationships for estimating the no load voltage of a battery under load has been determined. Using this set of relationships with battery measurements, an estimated no load voltage for the battery is determined. This estimated no load voltage is compared to the cut-off voltage. This allows for full use of the battery while stopping use of the battery when its voltage reaches the cut-off, thereby preventing damage.

Abstract: A passive battery charging control system for charging a battery is devoid of active electrical components. The passive battery charging control system includes one or more passive electrical control elements configured to limit the charging state of the battery.

Abstract: A charge control device includes a charge control circuit to control a charge of a secondary battery by controlling an output stage connected between a power supply and the secondary battery. The charge control circuit includes a first error amplifier to generate a first error voltage in response to a difference between a predetermined first reference voltage and a first feedback voltage. The value of the first feedback voltage is determined in accordance with a primary current supplied from the power supply to the output stage. The charge control circuit also includes a second error amplifier to generate a second error voltage in response to a difference between either one of a predetermined second reference voltage and the first error voltage, and a second feedback voltage. The value of the second feedback voltage is determined in accordance with a charge current supplied from the output stage to the secondary battery.

Abstract: A system for charging a battery pack of an electric vehicle comprises a heater for pre-heating the battery pack so that the battery pack is able to accept a charge from a charger. The battery pack is selectively de-coupled from the system during the pre-heating. When the battery pack has reached an appropriate temperature, the heater is selectively de-coupled from the system and the charger is coupled to the system to charge the battery. Advantageously, the battery pack is protected during pre-heating.

Abstract: An electric storage device monitor includes a measurement unit detecting and obtaining a detected value, a power supply switch portion switching a power supply state of the monitor between a monitoring state and a low power consumption state, a wakeup timer to which an actuation time is set and starting counting time in response to switching to the low power consumption state and continuing counting time and outputting an actuation signal if reaching the actuation time, and a control unit. The switch portion switches from the low power consumption state to the monitoring state every time the wakeup timer outputs the actuation signal. The control unit controls the measurement unit to detect and obtain the detected value in the monitoring state, compares the detected value and a reference value, and changes the actuation time according to a comparison result of the detected value and the reference value.

Abstract: A method and a device to discharge cell capacitors in a cell based voltage source converter. Each cell has switching elements in half bridge or full bridge configuration and a capacitor in parallel to the half or full bridge. Each cell has two terminals, whereof at least one is between two switching elements. The converter has AC and DC terminals, with the possibility to connect each of the terminals to ground, via a further switching element. A resistor is implemented into at least one of the ground connections. To discharge to capacitors, the switching elements in the respective cells are configured such, that the capacitor is in parallel connection to the terminals. The capacitors are thus discharged via the resistor to ground.

Abstract: A novel switching hysteretic power converter is presented. The converter includes the generation of a synthetic ripple signal and a feedback network to combine a signal in phase with the inductor current with a signal proportional to the regulated output voltage. The presented approach provides a switching boost converter with a much simpler control method with respect to conventional inductive boost power converters. The hysteretic control provides stable operation in all conditions with excellent load and line transient response. Furthermore the hysteretic control allows high frequency switching, reducing the size and cost of the passive components. The presented converter includes the Discontinuous Conduction Mode of operation to achieve very high efficiency at light loads. The presented approach can also be applied to buck switching power converters with excellent performance in terms of transient response, stability, efficiency and operation at high switching frequencies.

Abstract: A step-up circuit includes a capacitor, a transistor connected to the capacitor, and a reference voltage generator circuit configured to supply the transistor with a reference voltage that causes a rate of voltage increase relative to supply voltage to vary in accordance with the supply voltage.

Abstract: A bootstrap circuit for a voltage converter includes a bootstrap capacitor, a stable current module for generating a stable output current according to a stable output voltage, a current mirror module having a first branch circuit for generating a current signal according to the stable output current, and a charge module including a cascode transistor module including a plurality of transistors serially connected and a charge resistor for generating a conduction voltage according to the current signal, and an output circuit coupled to the current mirror module and the cascode transistor module for outputting the conduction voltage to charge the bootstrap capacitor.

Abstract: An integrated circuit device has a digital device operating at an internal core voltage; a linear voltage regulator; and an internal switched mode voltage regulator controlled by the digital device and receiving an external supply voltage being higher than the internal core voltage through at least first and second external pins and generating the internal core voltage, wherein the internal switched mode voltage regulator is coupled with at least one external component through at least one further external pin of the plurality of external pins.

Abstract: A method for controlling a current between an energy source and a load is disclosed. A switching module is coupled between the energy source and the load. The switching module includes two input terminals coupled to the energy source and two output terminals coupled to the load and at least one semiconductor switching element coupled between one of the input terminals and one of the output terminals. At least one current parameter of the current is measured between the energy source and the load. The current between the energy source and the load is interrupted by switching off the switching element when the at least one current parameter reaches or exceeds at least one predetermined parameter threshold value.

Abstract: A linear voltage regulator includes a Miller frequency compensation having a movable zero, which tracks the frequency of the load pole as the load condition changes. The compensated voltage regulator maintains stability under variable load conditions. Because of the Miller effect, DC open-loop gain and bandwidth are not sacrificed for stability. The compensated voltage regulator can therefore maintain high power supply rejection ratio (PSRR).

Abstract: A voltage converting circuit for converting an input voltage into an output voltage is disclosed. The voltage converting circuit includes a modulation signal generator, a comparator and a logic unit. The modulation signal generator is configured for generating a pulse width modulation (PWM) signal responsive to a feedback signal corresponding to the output voltage and a load coupled thereto. The comparator is configured for comparing the feedback signal with a reference signal to output a comparing signal. The logic unit is configured for performing a logical conjunction of the PWM signal and the comparing signal to generate a control signal for adjusting an input current corresponding to the input voltage to regulate the output voltage. A method for converting an input voltage into an output voltage is also disclosed herein.

Abstract: The invention improves the voltage regulation rate of the switching regulator in lag control. A divided output voltage divided by the first resistor and the second resistor is input to a first polarity input terminal of a comparator. A driver is used for controlling a switching transistor and a synchronous rectified transistor according to an output pulse of the comparator. A feedback circuit is used for outputting a switching signal to the reverse input terminal of the comparator according to the output pulse, wherein the switching signal is used for switching two voltage levels between the input voltage and a ground voltage. The error amplifier is used for amplifying an error between the divided output voltage and a first reference voltage and generating a second reference voltage to output to a second polarity input terminal of the comparator.

Abstract: A DC converter is provided for converting a first supply voltage into a second supply voltage. The first supply voltage is higher than the second supply voltage. The DC converter includes a driving stage and an output stage. The driving stage includes a modulation circuit, a pull-up driving unit, a pull-up unit, a pull-down driving unit, and a pull-down unit. The modulation circuit generates a control signal according to the second supply voltage. The pull-up driving unit generates a first P-type driving signal and a second P-type driving signal to the pull-up unit according to the control signal. The pull-down driving unit generates a first N-type driving signal and a second N-type driving signal to the pull-down unit according to the control signal.

Abstract: An embodiment switching converter includes a power stage that receives an input voltage for converting it into an output voltage and provides a load current to a load operably coupled to the power stage. The power stage includes an inductor carrying an inductor current and a digital controller configured to regulate the output voltage to a level close to a reference voltage using a pulse width modulated (PWM) signal supplied to the power stage.

Abstract: A DC voltage converter produces an output voltage (VS) at an output terminal from an energy source. The DC voltage convert includes a selector switch includes a first input coupled to the energy source, a second input coupled to a ground, and an output coupled to a first terminal of an inductor. A second terminal is coupled to the output terminal of the converter and a capacitor is coupled between the output terminal and the ground. A regulator produces a control signal as a function of a result of a comparison of the output voltage with a reference voltage. A control circuit couples the output of the selector switch to the first or second input of the selector switch, as a function of the control signal. The converter may also include a means of inhibition adapted to inhibiting the control circuit when a current flowing in the inductor gets cancelled.

Abstract: The switched-mode power supply includes a power stage, and a control unit to control the operation of the power stage based on a critical parameter of the power stage, wherein the control unit is configured to control the operation of the power stage to change from a first operational mode to a second operation mode if the critical parameter leaves a pre-defined range, and to change from the second operational mode to the first operational mode based on a measurement of a first time interval.

Abstract: Disclosed include a control circuit adapted for a power controller powered by an operation voltage. When the operation voltage exceeds an over-voltage reference, the power controller stops power conversion provided by a power converter. The control circuit comprises a slope detector detecting a variation slope of the operation voltage. When the variation slope exceeds a drop rate, the slope detector recovers the power conversion. When the power conversion is recovered the power controller compares the operation voltage with the over-voltage reference.