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7619910 |
Interleaved soft switching bridge power converter
An interleaved soft switching bridge power converter comprises switching poles operated in an interleaved manner so as to substantially reduce turn-on switching losses and diode reverse-recovery...
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7616466 |
Three phase inverter with improved loss distribution
An inverter circuit couples a DC voltage source having a primary side and a reference side to an electric motor or other AC machine having multiple electrical phases. An inverter circuit includes...
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7615979 |
Flexible power converter and simplified process controller
Flexible power converter and simplified process controller capable of being configured for a variety of applications with minimal effort. The power converter has a plurality of power switches that...
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7613016 |
Power and information signal transfer using micro-transformers
A power converter provides power across an isolation barrier, such as through the use of coils. A coil driver has transistors connected in a positive feedback configuration and is coupled to a...
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7609532 |
Phase-shifted PWM bridge with switchable inductors to maintain zero-voltage switching at light load
A dc-to-dc pulse-width-modulated phase-shifted full bridge defines two taps, and the bridge switches are operated to produce alternating voltage between the taps. A switchable inductor is connected...
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7602621 |
Half bridge converter
A half bridge converter having a pulse width control unit, a level regulating unit, a half bridge switch unit, an electricity converting unit and a feedback unit is disclosed. The level regulating...
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7599202 |
DC-AC converter with feedback signal control circuit utilizing power supply voltage, controller IC therefor, and electronic apparatus utilizing the DC-AC converter
An inverter controls the power supplied to a load such as a CCFL connected to a secondary winding of a transformer by means of pulse width modulation (PWM) control of the switches of a...
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7599177 |
Video dock for portable media player
A docking station for a portable media player. The docking station includes a docking connector to physically secure the portable media player and a communication interface to communicatively...
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7589987 |
DC-to-DC converter with improved transient response
A DC to DC converter includes a comparator, a driver, and a pair of switches. The comparator compares the output voltage with a reference voltage signal and generates a PWM signal. The driver...
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7589986 |
Single stage integrated boost inverter motor drive circuit
An integrated boost inverter circuit including at least one inverter stage having series connected high- and low-side switches having a common node. Each switch having an anti-parallel connected...
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7589981 |
DC-AC converter and method of supplying AC power
A dc-ac converter capable of supplying a finely regulated ac drive voltage to a load is provided. For this purpose, the converter includes, in a primary winding of a transformer, a full-bridge or...
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7589980 |
DC-DC converter
In a DC-DC converter of the present invention, a converting circuit converts a DC-DC voltage outputted from a DC power supply into an AC voltage, and to output to a series circuit in which a...
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7589481 |
Control device integrated dynamo-electric machine
In order to improve reliability, cost performance, and cooling property, a control device integrated dynamo-electric machine mounted to a dynamo-electric machine includes an inverter bridge...
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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...
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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...
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7586763 |
Electric power converter circuit
An electric power converter circuit includes a rectifying circuit having diodes, a coil, and a full-bridge circuit including switching devices, which are connected in cascade to an AC power supply ...
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7583523 |
Three phase inverter control circuit detecting two phase currents and deducting or adding identical ON periods
A small and highly vibration-proof inverter capable of detecting a phase current without requiring the development of complicated control software and without causing any current distortion is...
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7577005 |
Method for recognizing the load of an island inverter and island inverter
The invention relates to a method for recognizing the operational state of a load ( 10 ) connected to the output ( 6, 7 ) of an island inverter ( 1 ). A load recognition signal (S L ) is applied at...
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7567053 |
Mechatronic integration of motor drive and E-machine, especially smart-E-motor
The power switches of an inverter are mechanically integrated with an electric motor of a vehicle and are mounted on the end plate of the motor and employ short connections between the motor a-c...
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7564706 |
Power factor corrected single-phase AC-DC power converter using natural modulation
A power factor corrected (pfc) ac-dc converter has a modified boost input and a modified buck output. Unlike the prior art boost input, the boost switch returns to the output, not to ground. Unlike...
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7564700 |
Power supply system and apparatus
The present invention relates to a switched mode power supply with programmable digital control and to a power supply system comprising a plurality of switched mode power supplies. The input...
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7561453 |
Method for operating an inverter and arrangement for executing the method
There is described a method for operating an electronically controlled inverter. The inverter is controlled during the positive half-wave of the output alternating voltage in such a way that it...
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7561451 |
Power converter apparatus and methods using a phase reference derived from a DC bus voltage
In a power converter apparatus, such as an uninterruptible power supply, a phase reference signal is generated responsive to a DC voltage on a DC bus. A magnitude reference signal may be generated...
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7558080 |
Power converter system
A power converter system including an LC oscillator circuit, an oscillator drive circuit for driving the LC oscillator circuit, a rectifier circuit coupled to the LC oscillator circuit for...
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7548439 |
Electric power converter for reducing generated high frequency components
By reduction in loss and noise of a three-phase reactor on the AC side of an electric power converter, compactness and reduction in weight of the reactor are realized, and countermeasures for heat...
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7548435 |
Zero-voltage-switching DC-DC converters with synchronous rectifiers
A DC-DC converter includes an inductor, a synchronous rectifier (SR) connected to the inductor, and an active switch connected to the inductor and the SR. An active resonant tank (ART) cell is...
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7548029 |
Bi-directional current sensing by monitoring VS voltage in a half or full bridge circuit
An apparatus and method for determining the output current in a bridge-connected switched transistor output circuit including high-side and low-side transistor switches, typically MOSFETS. The...
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7548028 |
Current-mode resonant inverter circuit
A high conversion efficiency inverter circuit by providing the current-mode resonant type efficient in using a power source. A current-mode resonant inverter circuit comprises a step-up...
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7542312 |
Electric power converter
By reduction in loss and noise of a three-phase reactor on the AC side of an electric power converter, compactness and reduction in weight of the reactor are realized, and countermeasures for heat...
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7542311 |
Method for operating a converter circuit, and device for carrying out the method
A method for operating a converter circuit is specified with the converter circuit having a converter unit with a multiplicity of controllable power semiconductor switches and having an energy...
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7535740 |
Electronic apparatus and power circuit having reduced switching loss
An electronic apparatus having a load including: a power supply unit supplying a driving voltage to the load; an inverter unit switching the driving voltage; and a control voltage supply unit...
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7531970 |
Power source driving circuits and controllers thereof
A controller for a driving circuit of power source comprises a frequency generator, a pulse width modulator, and a driving device. The frequency generator comprises a latch circuit. The frequency...
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7529111 |
Drive controller for a self-commutated converter
A drive controller for a self-commutated converter providing a “safe stop” is described. The converter has two half-bridges, and the drive controller includes two control circuits having...
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7529108 |
Full-bridge digital power converter controller and method to compensate volt-second imbalance
A digital controller for use with a full-bridge power converter which includes an isolation transformer that conducts first and second currents of opposite polarity during respective power-transfer...
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7525820 |
Inverter
Primary and secondary regions are electrically insulated from each other. The first and second pulse transformers are provided to the respective transistors in the switching circuit. Secondary...
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7525293 |
Power supply switching circuit for a halogen lamp
A power supply and methods are provided. In one implementation, the power supply includes a switching circuit and a converter. The switching circuit includes a first transistor and a second...
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7508689 |
Inverter and a drive system using the inverter
A inverter has a switching device for switching DC to change it to AC, and a bipolar type rechargeable battery connected to the switching device in parallel or in series for smoothing the current...
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7505293 |
Device and method for controlling electric power converter
The control device of an electric power converter comprises a control device controlling turn-on of semi-conductor legs. The converter comprises DC voltage power supply lines on three levels with...
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7505292 |
Device and method for controlling an electric power converter
The control device of an electric power converter comprises a control device controlling turn-on of semi-conductor legs. The converter comprises DC voltage supply lines, an inverter connected...
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7502243 |
DC/AC inverter with adjustable gate-source voltage
The present invention is a DC/AC inverter for converting a DC supply voltage signal to an AC voltage signal. The DC/AC inverter includes a drive circuit, a switch circuit, a transformer circuit and...
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7499296 |
Electric power converter device with control means and process and converting power
An electric power converter with a control device that comprises a processing unit receives control signals and sends modulated signals to inverter stages of the electric power converter. The...
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7499291 |
DC power transmission system of voltage source converter using pulse-interleaving auxiliary circuit
A DC power transmission system of a voltage source converter using a pulse-interleaving auxiliary circuit is disclosed. The converter system comprises an IGBT converter for converting an AC power...
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7495933 |
Resonance transducer
There is provided a resonance transducer including a main bridge linked with an input signal. The resonance transducer includes a transformer assembly across which an output signal can be tapped, a...
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7492119 |
Circuit arrangement for generating motor characteristic curves
A circuit arrangement ( 1 ) for generating motor characteristic curves, in particular for stabilizing the pull-out torque of a two-phase synchronous motor ( 2 ) by using a series-connected element...
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7489527 |
DC transformer with an output inductance integrated on a magnetic core thereof and a DC/DC converter employing the same
A DC/DC converter includes an input filter, a half-bridge converter without PWM (Pulse Width Modulation) control function, a synchronous rectifier, an output capacitor, and a DC transformer. The DC...
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7489526 |
Power and information signal transfer using micro-transformers
A power converter provides power across an isolation barrier, such as through the use of coils. A coil driver has transistors connected in a positive feedback configuration and is coupled to a...
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7483279 |
Apparatus and method for detecting phase currents of inverter
The present invention previously sets a threshold voltage, compares the set threshold voltage with a reference voltage, and judges whether a minimal pulse width of a PWM signal is obtained. When a...
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7480161 |
Control apparatus for semiconductor power converter
A control apparatus for controlling a three- or single-phase semiconductor power converter employing fixed-pulse switching patterns superposes a DC component on an AC output voltage, to suppress...
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7480155 |
Digital generator of phase shift modulation
A digital generator of phase shift modulation receives two binary coded numbers (F) and (P), that represent a requested frequency value and a requested phase value, respectively, and generates two...
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7479774 |
High-performance solar photovoltaic (PV) energy conversion system
The present invention focuses on the development of a high-performance solar photovoltaic (PV) energy conversion system. The power circuit of the invention is made of a two-stage circuit,...
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