|
Match
|
Document |
Document Title |
|
|
7623363 |
Resonant-type switching power supply device
There is provided a switching power supply device having one half-wave rectifying circuit made up of switching elements complementarily turned on or off, a reactor, a current resonance capacitor, a...
|
|
|
7619907 |
DC/DC power conversion device
A DC/DC power conversion device includes n-stage circuits comprised of an inverter circuit for driving which is connected between positive terminals and negative terminals of smoothing capacitors,...
|
|
|
7613020 |
Discharge lamp ballast apparatus comprising DC/DC converters having at least two transformers and outputting two kinds of voltages
A discharge lamp ballast apparatus includes a DC/DC converter having a transformer T 1 and a DC/DC converter having a transformer T 2 , which are connected in parallel; a control section 4 for...
|
|
|
7612509 |
Motor controller
A motor controller is provided which can be reduced in the number of the wirings and power semiconductor devices required while maintaining the function equivalent to or higher than that of the...
|
|
|
7602627 |
Electrical power source, operational method of the same, inverter and operational method of the same
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...
|
|
|
7602626 |
Power conversion apparatus
In a power conversion apparatus that boosts a solar light voltage, converts it to AC and supplies AC power to a load or system, a second inverter is connected in series to one of two terminals on...
|
|
|
7598689 |
Motor drive apparatus
A control device generates, upon receiving an instruction to start engine while drive wheels of a hybrid vehicle are driven by a motor generator, a signal to output the signal to a voltage step-up...
|
|
|
7596008 |
Power conversion apparatus
A power conversion apparatus includes a first single-phase inverter that uses as a DC power source a first DC voltage that is boosted from a solar light voltage by a boosting chopper circuit. The...
|
|
|
7596007 |
Multiphase DC to DC converter
A multiphase DC to DC converter includes an input, an output, at least first and second converters, an inductor, an output capacitor, and a drive circuit. The drive circuit is configured for...
|
|
|
7596002 |
Power conversion system and method
A power conversion system comprises a converter coupled to a power source and configured to convert a DC power to a variable AC power signal. The power conversion system may further comprise a...
|
|
|
7586768 |
Electric power conversion apparatus for plural DC voltage sources and an AC electrical load
An electric power conversion apparatus includes a power converter connected to at least a first DC voltage source, a second DC voltage source and an AC electric motor. A control unit controls the...
|
|
|
7586766 |
Plasma arc power supply and control method for same
Energy loss due to driving a plurality of power supply units simultaneously in a low-current region is prevented, and a more stable load current is obtained. The generation of a load current in a...
|
|
|
7583047 |
Quenching device for a converter bridge with line regeneration
There is described a method for controlling a quenching device for a converter bridge with line regeneration, whereby the converter bridge controlled by a network-timed control circuit by ignition...
|
|
|
7579792 |
Hybrid motor boost system and methods
An electrical system for a vehicle includes a power source providing electrical power to a first and a second electrical motor. Each motor has two or more windings, and each winding has a first end...
|
|
|
7577008 |
Converter circuit comprising distributed energy stores
The invention relates to a converter circuit comprising at least one phase module ( 100 ) having an upper and a lower converter valve (T 1 , . . . , T 6 ), wherein each converter valve (TI, . . . ,...
|
|
|
7577007 |
Power converting apparatus
A power converting apparatus used as an active filter includes single-phase multiplex inverter unit for converting DC power into AC power and a control unit for controlling the single-phase...
|
|
|
7577006 |
Non-linear droop control system and method for isochronous frequency operation
Non-linear frequency droop control for isochronous frequency operation of parallel inverters includes generating a droop constant corresponding to the power level of the given inverter for...
|
|
|
7561389 |
Alternating-current voltage output apparatus
Inverters, based on signals from a control device, generate a commercial AC voltage across neutral points of 3-phase coils. A Y-capacitor for removing noise is connected to a load outside the...
|
|
|
7558092 |
Switching power supply unit
A switching power supply unit is provided, in which a convertible voltage range can be more widened. A transformer having four windings at a high-voltage side, the windings having the number of...
|
|
|
7542317 |
Semiconductor device and power conversion apparatus using the same
The power conversion apparatus uses the semiconductor device. Said semiconductor device includes a first group of power semiconductor elements at least one of which is electrically connected...
|
|
|
7535738 |
Method and apparatus including multi-drive configurations for medium voltage loads
A method and apparatus for converting X phase intermediate voltages on X intermediate lines to output voltage for driving a single three phase load, the apparatus comprising a positive DC bus, a...
|
|
|
7532490 |
Converter topology and methods for interfacing an electrical machine to electrical power grid
A power converter for coupling an electrical machine to an electrical grid includes a machine side converter and a grid side converter, each, side having a plurality of corresponding stages for...
|
|
|
7525296 |
Spread spectrum power converter with duty-cycle error compensation
A spread-spectrum power converter uses an inter-cycle duty-cycle error compensation to achieve a combination of high-precision tracking of a target average duty cycle and a favorable noise...
|
|
|
7522435 |
Power supply converter/s with controller/s responsive to voltage, current, and power
Each of power supply units in a power supply system according to the present invention includes a power supply module, a voltage increase/decrease circuit for increasing the voltage across the...
|
|
|
7518886 |
Multiphase soft switched DC/DC converter and active control technique for fuel cell ripple current elimination
DC/DC converter has a transformer having primary coils connected to an input side and secondary coils connected to an output side. Each primary coil connects a full-bridge circuit comprising two...
|
|
|
7495399 |
Power output apparatus and vehicle including the same
A coordination control device of a power output apparatus includes a coordination control unit. The coordination control unit calculates an intermediate value between the maximum value and minimum...
|
|
|
7483281 |
Multi-channel power converter with switching frequency modulation circuit for power saving
The present invention provides a control circuit for a multi-channel power converter to save power at light load. The control circuit comprises a modulation circuit and an oscillation circuit to...
|
|
|
7477037 |
Method for parallel control of series-cell based drives
A method for controlling at least two series-cell based drives connected in parallel. The method comprises detecting a failed cell in one of the drives, inhibiting operation of the drive with the...
|
|
|
7463500 |
Monopolar DC to bipolar DC to AC converter
An electrical DC-to-AC power conversion apparatus is disclosed that is primarily intended for use with solar photovoltaic sources in electric utility grid-interactive applications. The invention...
|
|
|
7450406 |
Power supply arrangement
A power supply arrangement ( 1 ) has a first input for connecting to a first power source, at least one second input for connecting to at least one second power source and an output for connecting...
|
|
|
7443129 |
Quenching device for a converter bridge with line regeneration
There is described a method for controlling a quenching device for a converter bridge with line regeneration, whereby the converter bridge controlled by a network-timed control circuit by ignition...
|
|
|
7439714 |
Method for operation of a converter system
The present invention relates to a method for operating a converter system of a wind turbine, wherein the converter system includes converter modules capable of converting electric power produced...
|
|
|
7433212 |
System linking apparatus for generated electric power
A system linking apparatus for generated electric power which may be made smaller and more efficient. The system linking apparatus is intended for connecting an electric power system to an output...
|
|
|
7425806 |
System and method for controlling a variable speed drive
A variable speed drive is provided having a converter to convert an AC voltage to a DC voltage, a DC link to filter and store energy from the converter, and a plurality of inverters. Each inverter...
|
|
|
7420826 |
Parallel inverters and controlling method thereof
Parallel inverters without any communication buses and the controlling method thereof are provided. The parallel inverters are controlled by an instant voltage. Each inverter includes an output...
|
|
|
7414866 |
Method for smoothing input current to a power delivery system having regeneration capability
A method for smoothing input current to a power delivery system having regeneration capability. The method comprises evaluating input current to an input converter of the power delivery system for...
|
|
|
7394232 |
Interleaved switching converters in ring configuration
A switched mode power supply assembly that has a plurality of power supply modules cyclically coupled to each other. Each power supply module has a synchronization control module for generating a...
|
|
|
7388766 |
Harmonic control and regulation system for harmonic neutralized frequency changer
A control and regulation system for use with a harmonic neutralization frequency changer system. In the generalized frequency changer system, a direct converter frequency changer is used to convert...
|
|
|
7378758 |
Parallel inverter system
The invention relates to a parallel inverter system, in which each inverter includes a synchronized square wave generator, a voltage given generator, a voltage regulating unit and a power amplifier...
|
|
|
7375993 |
High-voltage X-ray generator
A power supply for a device which has a load, comprising a first resonant generator and a second resonant generator, coupled in parallel, each generator having a phase output. The power supply...
|
|
|
7362597 |
AC voltage generating apparatus and motive power outputting apparatus
A motive power outputting apparatus includes motor generators, inverters, and a transformer. The motor generator includes a three-phase coil, and the motor generator includes a three-phase coil....
|
|
|
7351931 |
Switching power supply apparatus and electronic device using the same
Provided is a switching power supply unit which uses a multilayer board or a stack of planar conductors as the windings of transformers so as to reduce the volume of the transformers and to have...
|
|
|
7339807 |
Power supply apparatus
One of a plurality of voltages is adapted to be applied to power supply terminals ( 2 a, 2 b, 2 c ). A rectifying circuit ( 6 ) rectifies the applied voltage and develops a rectified voltage...
|
|
|
7339806 |
Adjustment device for adjusting wave shape of output of a DC-AC inverter
A DC-AC inverter has an adjustment device for adjusting wave shape of output thereof includes a feedback circuit, and a zero-crossing detector; the feedback circuit will detect and measure output...
|
|
|
7339803 |
Inverter bridge short-circuit protection scheme
A fault handling system for short circuit recovery in three-phase multiple-level inverter bridges, used to drive inductive loads, to assure a proper sequence for turning-off switches in the...
|
|
|
7330363 |
Converter circuit with two converter elements
A converter circuit having a first and a second converter element is specified, with each converter element having a DC voltage circuit and in each case one converter element phase (u 1 , v 1 , w 1...
|
|
|
7327588 |
Synchronization of parallel-connected inverter units or frequency converters
A method for the synchronization of parallel-connected inverter units (INU 1 , INU 2 ) or frequency converters and an inverter apparatus or a frequency converter apparatus wherein the inverter...
|
|
|
7324360 |
Power converter methods and apparatus for variable speed high power machines
Methods and apparatus for converting power from a power source are described. In one example embodiment, the method includes controlling multiple transformer and switchgear units coupled to a power...
|
|
|
7294984 |
Motor controller
A motor controller is provided which can be reduced in the number of the wirings and power semiconductor devices required while maintaining the function equivalent to or higher than that of the...
|
|
|
7277304 |
Multiple inverter system with single controller and related operating method
A multiple DC-to-AC inverter system, which is suitable for an electric or hybrid vehicle application, includes a plurality of inverters controlled by a single controller. One example embodiment...
|