Abstract: For transmitting electrical energy different electric currents are transmitted through different numbers of wires from a plurality of sources, converted into single-wire electric currents with increased voltage, transmitted through a single-wire electrical current transmission line, converted into several electric currents with the reduced voltage and supplied to corresponding consumers.

Abstract: A novel power inverter system for transferring electric power between a DC power source and a multi-phase electric machine is described, and includes a power inverter, a Z-source inverter, a first switch, and a second switch. The first switch is arranged between positive and negative conductors of a high-voltage bus that is electrically coupled to the DC power source, and the second switch is arranged in-line on the positive conductor of the high-voltage bus.

Abstract: The invention relates to a system and to a method for the inductive transmission of energy, comprising feeding a first resonant circuit with a plurality of current pulses and inductively transmitting energy from the first resonant circuit to a second resonant circuit, which is inductively coupled to the first resonant circuit, wherein the current pulses flow through a switch of a first power stage, which switch is coupled to the first resonant circuit and is periodically switched on.

Abstract: An apparatus includes a power input, a power output, and a plurality of independent powering units each comprising at least one charge store. Each of the plurality of powering units is capable of receiving power from the power input while isolating the power output, and each of the plurality of powering units is capable of outputting power to the power output while isolating the power input.

Abstract: A structure includes a semiconductor integrated circuit comprising a multilevel wiring network and an inductor integrated into the multilevel wiring network. The inductor includes a planar laminated magnetic core and a conductive winding that turns around in a generally spiral manner on the outside of the planar laminated magnetic core. The planar laminated magnetic core includes an alternating sequence of a magnetic layer and a non-magnetic layer. The magnetic layer comprises a ferromagnetic alloy having an iron composition of about 10 atomic percent to about 90 atomic percent.

Abstract: Fluid flow systems can include one or more thermoelectric devices in contact with the fluid flowing through the system. One or more thermoelectric devices can be operated in a temperature control mode and a measurement mode. Thermal behavior of the one or more thermoelectric devices can be analyzed to characterize a level of deposit formed on the thermoelectric device(s) from the fluid flowing through the system. Characterizations of deposition on thermoelectric devices operated at different temperatures can be used to establish a temperature-dependent deposition profile. The deposition profile can be used to determine if depositions are likely to form at various locations in the system, such as at a use device or in a flow vessel. Detected deposit conditions can initiate one or more corrective actions that can be taken to remove deposits, or to prevent or minimize deposit formation before deposits negatively impact operation of the system.

Abstract: A high-voltage device according to embodiments comprises an inverter circuit configured to convert a direct-current voltage into an alternating-current voltage, a high-voltage transformer, an insulating layer and a conductive layer. The high-voltage transformer includes a primary coil on an input side and multiple secondary coils on an output side and raises a voltage of output of the inverter circuit. The insulating layer is provided on an outer circumference of a bundle of winding wires of each of the secondary coils so as to individually cover each of the secondary coils. The conductive layer is provided on an outer circumference of each of the insulating layers so as to individually cover each of the insulating layers.

Abstract: Electric power devices and control methods are provided which automatically select a line voltage or phase voltage of an AC voltage supply. The electric power device includes a switchable circuit, a sensor and a switch control. The switchable circuit connects to the AC voltage supply, and includes multiple switchable elements. The sensor ascertains a voltage level of the AC voltage supply, and the switch control automatically establishes a configuration of the switchable circuit through control of the multiple switchable elements. The switch control couples the electric power device in a line-line (delta) configuration to the AC voltage supply when the voltage level is in a first voltage range, and a line-neutral (wye) configuration when the voltage level is in a second voltage range.

Abstract: A converter includes a converter circuit including a rectifying section to rectify an alternating current (AC) voltage and a smoothing section to smooth a direct current (DC) voltage rectified by the rectifying section, a diagnostic device configured to diagnose an abnormality of the converter circuit, an inrush current preventing section configured to prevent inrush current from being supplied to the smoothing section, and a switching section configured to supply the AC voltage to the converter circuit through a path different from a voltage supply path of the inrush current preventing section, wherein the diagnostic device determines an abnormal region of the converter circuit by controlling the inrush current preventing section and the switching section.

Abstract: A charge pump circuit includes a first switch˜a fourth switch, a capacitor, a current source, a first resistor, a second resistor, an amplifier, another current source, a current mirror, a skip detection circuit, a switch generation circuit and a control unit. A method includes: (a) starting the charge pump circuit; (b) operating the charge pump circuit in a first phase, wherein the first switch and second switch are conducted and the third switch and fourth switch are disconnected; (c) operating the charge pump circuit in a second phase, wherein the third switch and fourth switch are conducted and the first switch and second switch are disconnected; (d) determining whether a detected voltage in the skip detection circuit is higher than a threshold voltage; and (e) selectively performing step (b) or (c) again according to determination result of step (d).

Abstract: A device for limiting a fault current for a generator, in particular of a wind turbine is provided. A first frame is made of a ferromagnetic material, wherein the first frame comprises a first frame section and a further first frame section, wherein a first gap is formed between the first frame section and the further first frame section. A first coil is wound around the first frame section, wherein the first coil is connectable to a first stator winding of a stator of the generator. A further first coil is wound around the further first frame section, wherein the further first coil is connectable to an electronic device. A first permanent magnet element is arranged inside the first gap. The first frame section and the further first frame section are formed with respect to each other such that an electromagnetic interaction between the first coil and the first permanent magnet element and the further first coil and the first permanent magnet element is provided.

Abstract: An inductor is integrated into a multilevel wiring network of a semiconductor integrated circuit. The inductor includes a planar magnetic core and a conductive winding. The conductive winding turns around in generally spiral manner on the outside of the planar magnetic core. The conductive winding is piecewise constructed of wire segments and of VIAs. The wire segments pertain to at least two wiring planes and the VIAs are interconnecting the at least two wiring planes. Methods for such integration, and for fabricating laminated planar magnetic cores are also presented.

Abstract: A high voltage transformer for transforming electric power from a high voltage direct current source to a lower voltage direct current or to a lower voltage alternating current, without intermediate magnetic transformation. The transformer has a number of stages. Each stage includes capacitors and switching devices. There is a controller that controls the switching devices to change the polarity of one or more capacitors.

Abstract: Electrical devices, methods of operating an electrical device for use with a multiway switch system, and methods for connecting an electrical device with a load device and a multiway switch system for controlling the load device are described. In one embodiment, an electrical device for use with a multiway switch system includes an alternating current (AC) power interface configured to connect to at least one of a live wire and a neutral wire of an AC power supply, a load regulator module configured to regulate a load device that is connected to the neutral wire of the AC power supply, an output power interface configured to connect to the multiway switch system and to output a voltage to a switch of the multiway switch system, and a microcontroller module configured to control the load regulator module in response to a switching of the multiway switch system.

Abstract: A common mode inductor device includes a magnetic core forming a continuous loop, a first winding wound around the magnetic core, and a second winding wound around the magnetic core. The magnetic core further includes a first leg section, a second leg section, a third leg section and a fourth leg section. The first winding is wound around the first leg section, the second winding is wound around the second leg section, the third leg section is provided between a first end area of the first leg section and a first end area of the second leg section, and the fourth leg section is provided between a second end area of the first leg section and a second end area of the second leg section.

Abstract: Disclosed is a power inverter which converts voltage from a DC source into high frequency rectangular alternating voltage pulses which are transferred to a load via a transformer with a ferromagnetic core having no air gap. An additional indicator winding on the transformer, which is connected to a differential circuit which in turn is connected to a control circuit, makes it possible to control the process of the reversal of the magnetization of the core. Switching on the primary winding takes place when the permeability of the transformer's core achieves its maximum. This special feature makes it possible to minimize the size of the transformer, while allowing transferring maximum energy to the load with minimum of the magnetization frequency and losses.

Abstract: A transmitting and receiving electrode system, and power transmission method using the same are provided. The transmitting and receiving electrode system includes: a voltage/current detection unit measuring a voltage and a current in real time while power is being transmitted between first and second electrodes; a controller calculating a variable element value based on the voltage and current values transferred from the voltage/current detection unit; and a variable element unit converting a variable element under the control of the controller to adjust an impedance of a power source.

Abstract: An exemplary power conversion system is disclosed including a DC bus for receiving DC power; a line side converter electrically coupled to the DC bus for converting the DC power to AC power; and a voltage source controller to provide control signals to enable the line side converter to regulate the AC power. The voltage source controller comprises a signal generator to generate the control signals based at least in part on a power command signal and a power feedback signal. The voltage source controller further comprises a current limiter to, during a transient event, limit the control signals based at least in part on an electrical current threshold. The voltage source controller further comprises a voltage limiter to, during the transient event, limit the control signals based at least in part on a DC bus voltage feedback signal and a DC boundary voltage threshold.

Abstract: A transformer comprises a primary winding 231; a secondary winding 233; a first electrostatic screen 234 located between the primary winding and the secondary winding and most proximate to the primary winding means; and a second electrostatic screen 235 located between the primary winding and the secondary winding means and most proximate to the secondary winding means. The first electrostatic screen is electrically connectable to a power supply electrically connectable to the primary winding and the second electrostatic screen is electrically connectable to a load electrically connectable to the secondary winding. The invention also includes an inverter system including the transformer.

Abstract: There is provided a high frequency power supply device. The power control unit comprises an impedance adjuster that includes a variable reactance element and adjusts a load side impedance by changing a reactance value of the variable reactance element, and an impedance control unit that controls the variable reactance element of the impedance adjuster in response to a power value detected by a power detection unit so as to perform control of approximating the power value of the high frequency power, which is fed from the high frequency power generation unit to the load, to the setting value or control of maintaining the power value within the set allowable range by changing a resistance of the load side impedance in response to the power value detected by the power detection unit.

Abstract: A system for regulating the output of a high-voltage, high-power DC supply, the system includes a high-voltage DC power supply, a storage capacitor, and at least one non-dissipative regulator having an output voltage range less than an output voltage range of the high-voltage DC power supply. The regulator includes an internal storage capacitance and a control circuit configured to maintain a desired high-voltage output on a load.

Abstract: The present invention is related to a clean energy generating device which includes coiled or spiral shaped conductors, for receiving electromagnetic wave and inducing electric current, and elements which can create magnetic fields passing through the coiled or spiral shaped conductors for rectifying alternating current (AC) and transforming random electron movement from heat into direct current (DC) at the same time. The direct current (DC) is usable by an electronic device to supply power. The length, number of circles and the radius of the circles of the coiled or spiral shaped conductors are not limited and can be adjusted for receiving and rectifying effect. Thus, this invention make effective use of electromagnetic radiation and heat in the air to produce electricity. Furthermore, it can be combined with a specially designed unit to produce hydrogen from water to achieve output of clean energy fuel and practical purposes.

Abstract: An electrical circuit for alternating current generation comprising a direct current control box, a first inductor, a second inductor, a first capacitor, and dual load connections. The direct current control box can alternately provide positive direct current to the first inductor then negative direct current to the second inductor. A second end of each inductor can be electrically connected together and electrically connected to a first load connection. A common connection on the control box can be electrically connected to a second load connection. The first load connection and the second load connection can be configured to be electrically connected across a load. A first capacitor can be electrically connected between the first load connection and the second load connection and configured to be electrically connected in series or parallel parallel with the load.

Abstract: A common mode filter and a power supply device having the same are provided. The common mode filter includes a first inductor having a first winding number, a second inductor facing the first inductor and having a second winding number, a first intermediate terminal branching from an intermediate portion of a coil of the first inductor, and a second intermediate terminal branching from an intermediate portion of a coil of the second inductor. The effects of two filters are obtained from one common mode filter and the volume is reduced, so that a light, thin, short, and short module is provided.

Abstract: A device, system, and method for communicating with a power inverter of an array of inverters includes transmitting a relay message from an inverter array controller to a relay inverter in response to failing to receive a response from at least one power inverter of the array. The relay inverter is configured to retransmit a message from the inverter array controller to a non-responsive power inverter of the array of inverters in response to receiving the relay message. The relay inverter may subsequently retransmit a reply received from the non-responsive power inverter to the inverter array controller or to another power inverter of the array of inverters.

Abstract: A resonant mode converter includes a PFC power converter having an input coupled to receive an input voltage. An LLC power converter is cascaded with the PFC power converter. The LLC power converter includes a transformer coupled to generate an output of the resonant mode converter. A feedback circuit is coupled to generate a first current representative of the output of the resonant mode converter. A control unit includes a current limiting circuit coupled to receive the first current and a second current generated in response to a reference voltage. The current limiting circuit is coupled to limit the first current in response to the second current. The control unit further includes an oscillator coupled to generate a control signal having a control frequency in response to the first current. The resonant mode converter output is controlled in response to the control frequency.

Abstract: A voltage converting circuit includes a plurality of first capacitors that are charged by a power source, a second capacitor, connected in parallel to the plurality of first capacitors, which is able to be charged to a voltage that is supplied to a load circuit, and a plurality of switching circuits, provided in such a way as to correspond to the plurality of first capacitors, each of which switches states of connection between its corresponding first capacitor and the second capacitor. The first capacitors are sequentially connected to the second capacitor through the corresponding switching circuits as charging voltages of the first capacitors reach a predetermined connection voltage that is higher than a charging voltage of the second capacitor so that the first capacitors are not short-circuited with each other.

Abstract: A wireless power transmission system includes: a power transmitting section that converts DC energy input from a DC energy source into AC energy of a frequency f0; a transmitting antenna; and a receiving antenna. The power transmitting section includes: a class-E oscillator circuit including a switching element and a capacitor which are connected in parallel to the DC energy source, for converting the DC energy into the AC energy; and a switching control section that inputs a control signal for controlling a conduction state of the switching element to the switching element. The switching control section switches the switching element from a non-conductive state to a conductive state when a preset time period has elapsed or when a potential difference across the switching element takes a local minimum value after the switching element is switched from the conductive state to the non-conductive state.

Abstract: A power converting apparatus makes reduction of power loss possible and operates in a two-phase mode. A power converting apparatus of the inventive concept includes I-shaped block cores, each being made of a magnetic material; and E-shaped cores, each being produced by combining two L-shaped magnetic materials to each of the I-shaped cores. In each of the E-shaped cores, the block core is defined as a central leg, the other two legs are defined as a first outside leg and a second outside leg, respectively, and a closed magnetic path is configured by two E-shaped cores combined such that one of respective central legs in the two E-shaped cores, one of respective first outside legs therein, and one of respective second outside legs therein are caused to face the other of the central legs, the other of the first outside legs, and the other of the second outside legs.

Abstract: The present invention provides a vehicle power module and a power converter including a power semiconductor element (328), a plurality of connecting conductors (371U, 372U, 373U) for transmitting current to the power semiconductor element (328), and a metallic base (304) upon which the power semiconductor element (328) and the plurality of connecting conductors (371U, 372U, and 373U) are mounted; and the power semiconductor element (328) and the plurality of connecting conductors (371U, 372U, and 373U) are mounted upon the metallic base (304) so as to form a looped current path. Desirably, the power semiconductor element (328) and the plurality of connecting conductors (371U, 372U, 373U) are arranged so as to form two or more looped current paths.

Abstract: Systems, methods, and apparatus for providing a dynamic break and distortion filter. In one embodiment, an apparatus can include an inverter providing alternating current (AC) power at one of a first and second chopping frequency and a filter. The filter can include an input port receiving the AC power and an output port providing output power by selectively passing the AC power from the input port to the output port. The filter may further include an inductor electrically connected to one of the input port and output port and a capacitor electrically connected to the inductor and to a resistor, wherein current does not substantially flow through the inductor and capacitor at the first chopping frequency and does substantially flow through the inductor and capacitor at the second chopping frequency, and wherein the AC power with the second chopping frequency is dissipated in the resistor.

Abstract: An inverter controller comprising a current regulator unit, a voltage regulator unit coupled to the current regulator unit, an inverter unit coupled to the voltage regulator unit, and a drive unit controlled by the inverter unit.

Abstract: A multiphase DC voltage converter and a method for controlling a multiphase DC voltage converter, having at least two parallel coils which are controlled in a time-shifted manner, at least one control unit for activating the coils, and at least one magnetically sensitive sensor element for detecting a magnetic field generated by the current flow through the coils. The control unit controls the current flow through the coils as a function of an output signal of the at least one sensor element.

Abstract: Various embodiments relate to a base station element and related method of suppressing an alternating-current (AC) portion of a signal. A base station element includes a filter capable of lightning suppression through the use of an LC filter that suppresses an AC portion of a received signal while passing a DC portion of the signal. The LC filter includes a flat inductor disposed in a cavity of the base station. The flat inductor may be connected to other electrical components disposed in the cavity of the base station to complete the electrical circuit. In some embodiments, the flat inductor may be produced from one material through photo-etching and may also include snap in or snap on connectors on one or both ends to enable galvanic contact with other components like a tap pin or a printed circuit board (PCB) without requiring attachment through soldering.

Abstract: A resonant mode power converter is controlled with a control unit including a current limiting circuit coupled to receive a first current representative of a power converter output and a second current generated in response to a reference voltage. The current limiting circuit is coupled to limit the first current in response to the second current. An oscillator is coupled to receive the first current to generate a control signal having a control frequency in response to the first current. The power converter output is controlled in response to the control frequency of the control signal.

Abstract: Disclosed herein are various embodiments of compact coil power transformers configured to provide high voltage isolation and high voltage breakdown performance characteristics in small packages. Compact coil transformers are provided across which power may be transmitted and received by primary and secondary coils disposed on opposing sides of a substrate without high voltage breakdowns occurring therebetween. At least portions of the compact coil transformer are formed of an electrically insulating, non-metallic, non-semiconductor, low dielectric loss material. The compact coil transformers may be formed in small packages using, by way of example, printed circuit boards, flex circuits, lead frames, CMOS and other fabrication and packaging processes.

Abstract: An impedance dropping dc power supply having an impedance controlled converter whose impedance adaptively changes as a function of the power supply's load impedance, to maintain the ac voltage across the primary winding of its power transformer below a predetermined maximum level, and to minimize the waste heat generated by the power supply that would otherwise have to be dissipated.

Abstract: An AC photovoltaic module includes a DC photovoltaic module for converting solar energy to DC electrical power, and an inverter for converting DC electrical power to AC electrical power, the inverter being adapted for connection to a frame portion of the module and being sized and configured, and provided with arrangements of electrical components thereof, to dispense heat from the inverter, whereby to prolong operational life and reliability of the inverter.

Abstract: A high voltage transformer for transforming electric power from a high voltage direct current source to a lower voltage direct current or to a lower voltage alternating current, without intermediate magnetic transformation. The transformer has a number of stages. Each stage includes capacitors and switching devices. There is a controller that controls the switching devices to change the polarity of one or more capacitors.

Abstract: A resonant mode power converter is controlled with a control unit including a feedback circuit coupled to generate a first current representative of an output of the power converter. A current limiting circuit is coupled to receive the first current and a second current generated in response to a reference voltage. The current limiting circuit is coupled to limit the first current in response to the second current. An oscillator is coupled to receive the first current to generate a control signal having a control frequency in response to the first current. An output voltage of the power converter is controlled in response to the control frequency of the control signal.

Abstract: Provided is a power converter having an inverter (13) wherein capacitors (12) are connected in parallel on a direct current side, and a power supply circuit configured to supply the inverter with a direct current from a power supply (1) and a power storage element (14). A controller using such power converter is also provided for electric rolling stocks. The power supply circuit is provided with a power supply switch (S1) arranged between the power supply and the inverter, a DC-to-DC converter (15A) arranged between the power storage element and the inverter, and a bypass switch (S2) arranged between the power storage element and the inverter.

Abstract: Systems and apparatus are provided for an inverter system for use in a vehicle having a first energy source and a second energy source. The inverter system comprises an electric motor having a first set of windings and a second set of windings. The inverter system further comprises a first inverter coupled to the first energy source and adapted to drive the electric motor, wherein the first set of windings are coupled to the first inverter. The inverter system also comprises a second inverter coupled to the second energy source and adapted to drive the electric motor, wherein the second set of windings are coupled to the second inverter. A controller is coupled to the first inverter and the second inverter to achieve desired power flow between the first energy source, the second energy source, and the electric motor.

Abstract: Disclosed herein is the resonant inverter of a radio frequency (RF) generator for radiofrequency ablation (RFA). The resonant inverter of RF generator for RFA amplifies to high power an oscillation frequency output from an oscillator and provides the amplified oscillation frequency to an electrode. The resonant inverter processes the oscillation frequency output from the oscillator as a high-power sine wave having a frequency of 480 kHz and a Root Mean Square (RMS) power of 30 to 200 watts, and transfers the high-power sine wave to the electrode.

Abstract: An electric power source in which a plurality of inverters operate on the same frequency and the plurality of inverters are connected in parallel so that a resistance value expressed by (1??·G)/(?·G) where ? is the output voltage feedback gain, ? is the output current feed forward gain, and G is the inverter current gain, is made to be the equivalent output impedance; and is an electrical power source in which the cross-current between the inverters are made to be an acceptable value or below by adjusting the output of each of the inverters by controlling the equivalent output impedance by modifying both or either one of the output voltage feedback gain ? or the output current feed forward gain ?.

Abstract: A transformer with power factor compensation and a DC/AC inverter constructed thereby are presented. The power factor compensation transformer includes a primary winding, a secondary winding, and a power factor compensation capacitor bank, while the secondary winding having a coupling winding and a power factor compensation winding. The primary winding connects to a power grid in parallel, the coupling winding connects to an AC output port of a passive trigger type DC/AC inverter, and the power factor compensation winding serially connects with the power factor compensation capacitor bank. Besides, a triggered switch serially connecting with the power factor compensation winding and power factor compensation capacitor bank is provided when an inductor with air gap links the passive trigger type DC/AC inverter and the coupling winding. Consequently, a function of power factor correction is achieved.

Abstract: The switching frequency of an LLC converter is controlled by a control unit to which a feedback circuit provides a first current dependent upon the output voltage of the converter. An oscillator circuit produces a sawtooth waveform at a frequency dependent upon the first current, up to a limit equal to a second current set by a resistor. Two complementary switch control signals are produced for controlling two switches of the converter for conduction in alternate cycles of the sawtooth waveform. A timer produces dead times between the two complementary switch control signals in dependence upon the second current. Another resistor provides a current constituting a minimum value of the first current, and a charging current of a capacitor in series with a resistor modifies the first current for soft starting of the converter.

Abstract: A method and inverter (2, 27) for converting a DC input voltage supplied by a DC source (9), which is in particular a solar cell array, into a 3-phase AC output. For each phase (R, S, T) the DC input voltage is converted to a DC output voltage (DCR, DCS, DCT) with a specific waveform. The waveforms of the three DC output voltages are identical, shifted in time by 120° to each other and they are such that by subtracting any two of them a sinusoidal waveform is obtained. The waveform of each DC output voltage may comprise a first portion of ? or 120° of the AC output cycle with an amplitude of zero and a subsequent second portion of ? or 240° of the AC output cycle during which the DC output voltage has a non-zero amplitude.

Abstract: The present invention is an electric power source in which a plurality of inverters operate on the same frequency and the plurality of inverters are connected in parallel so that a resistance value expressed by (1??·G)/(?·G) where ? is the output voltage feedback gain, ? is the output current feed forward gain, and G is the inverter current gain, is made to be the equivalent output impedance; and is an electrical power source in which the cross-current between the inverters are made to be an acceptable value or below by adjusting the output of each of the inverters by controlling the equivalent output impedance by modifying both or either one of the output voltage feedback gain ? or the output current feed forward gain ?.

Abstract: A double ended inverter system for an AC traction motor of a vehicle includes a fuel cell configured to provide a DC voltage, an impedance source inverter subsystem coupled to the fuel cell, a DC voltage source, and an inverter subsystem coupled to the DC voltage source. The impedance source inverter subsystem, which includes an ultracapacitor, is configured to drive the AC traction motor. The inverter subsystem is configured to drive the AC electric traction motor. The ultracapacitor is implemented in a crossed LC network coupled to the fuel cell.

Abstract: A liquid crystal display device includes a liquid crystal display panel, a lamp disposed behind the liquid crystal display panel, a cover accommodating the lamp, and an inverter disposed behind the cover. The inverter includes a substrate and a transformer mounted on the substrate and driving the lamp. The transformer includes a core and a coil that is wound around at least a part of the core. The liquid crystal display panel further includes a transformer cover which covers the coil, an inverter cover which covers the inverter and the transformer cover, and a metal member in the transformer cover.