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US20130094261 |
Photovoltaic Power Converters
Photovoltaic power converter systems and methods are described. In one example, a method for use in operating a solar power converter includes sampling a DC link voltage of a DC link during a first...
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US20120044728 |
ELECTRIC POWER CONVERTER
In aspects of the invention, first and second series circuits of switching devices and a series circuit of capacitors are connected in parallel. Between the connection point in the first series...
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US20130063991 |
VOLTAGE CONVERTER CONFIGURATIONS FOR SOLAR ENERGY SYSTEM APPLICATIONS
A system includes a low switching frequency power converter configured to be coupled to a solar cell, wherein the low switching frequency power converter is configured to generate alternating...
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US20120243278 |
Power Module and Circuit Board Assembly Thereof
A power module includes a first bobbin, a primary winding coil, a circuit board assembly and a first magnetic core assembly. The primary winding coil is wound around the first bobbin. The circuit...
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US20100085786 |
CONVERTIBLE CHARGE-PUMP CIRCUIT
A convertible charge-pump circuit includes: a charging circuit having a plurality of charging capacitors and a pumping circuit having an output port coupled to a pumping capacitor. The charging...
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US20080175024 |
Power converter with isolated and regulation stages
In a power converter, the duty cycle of a primary winding circuit causes near continuous flow of power through the primary and secondary winding circuits during normal operation. By providing no...
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US20110216567 |
Single switch inverter
A novel concept of converting a DC input to an AC output with a single active switch is disclosed. A series of topologies are developed to support the needs of different applications. Particular...
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US20120262955 |
CONVERTER WITH INPUT VOLTAGE BALANCE CIRCUIT
In one aspect of the present invention, a converter circuit with input voltage balance includes a plurality of modules having inputs electrically series-connected to each other and outputs...
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US20120256685 |
Power Supply with Tickle Pulse Injection
A power supply injects a series of “tickle” pulses into a pulse width modulated (PWM) controller to induce the controller to generate PWM pulses at a minimum switching frequency, preferably one tha...
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US20120175955 |
SMART MICROGRID RECONFIGURABLE AC INTERFACE
Presented is a system and method for providing reconfigurable AC interfaces for AC power systems. The method comprises embedding a reconfigurable AC interface for transferring power between power...
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US20120039095 |
BOOST CONVERTER
There is provided a boost converter capable of reducing internal pressure in elements without the employment of a separate snubber by clamping a voltage, transmitted to the elements, to a charging...
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US20050237010 |
Architecture of power supply system for LCD apparatus
The proposed architecture includes a Dual Boost PFC circuit for receiving the AC input voltage and generating the DC bus voltage, at least one inverter coupled to the Dual Boost PFC circuit for...
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US20120020463 |
COMPACT, LOW NOISE POWER SUPPLY FOR ADVANCED ELECTRONICS APPLICATIONS, AND X-RAY ANALYZER APPLICATIONS THEREOF
A shielded, low-noise, high-voltage power supply having a plurality of voltage multipliers, each having a toroidal transformer, and collectively producing a high DC output voltage from an AC...
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US20100054001 |
AC/DC Converter with Power Factor Correction
A power converter is configured for usage in a power factor correction system. The power converter comprises a transformer with a primary winding and a secondary winding which isolates a primary...
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US20090080228 |
INDUSTRIAL TRUCK WITH A CHARGER
Industrial truck with a charger, an asynchronous machine and a three-phase AC control unit which converts a DC voltage of a battery for the asynchronous machine, the charger having a switching...
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US20110103102 |
VOLTAGE CONVERTER WITH HIGH EFFICIENCY
A voltage converter transmits energy in multiple stages using a charge pump so as to decrease the voltage rating of the secondary side of the transformer and reduce the size of the transformer....
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US20110122655 |
POWER SUPPLY WITH AC/DC CONVERTER AND DC/AC INVERTER IN LOOP
A power supply includes a DC/AC inverter and an AC/DC converter connected in a loop such that a DC output of the AC/DC converter is connected to a DC input of the DC/AC inverter and an AC output of...
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US20080198635 |
Pulse width modulated ground/return for powered device
A new pulse width modulation return scheme in which the source of PWM FET is directly connected to the 48 Volt return and therefore Ids of PWM FET does not pass through the hot-swap FET which...
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US20130076151 |
PHOTOVOLTAIC GENERATION SYSTEM USING PARALLEL INVERTER CONNECTED GRID
A photovoltaic generation system using grid-connected parallel inverters comprises a plurality of photovoltaic generation devices connected in parallel with each other, and a transformer configured...
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US20110141773 |
HVDC CONNECTION OF WIND TURBINE
A method and apparatus for connection of a wind driven turbine generator to an HVDC transmission line is provided that does not require transformation of the wind generated AC voltage to a nominal...
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US20120327691 |
SWITCHED MODE POWER SUPPLY
A power supply has over power protection based on the same signal as used by the feedback path for controlling the switching of the power supply. This means that no additional signal needs to be...
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US20080304293 |
Converter controller
A converter controller is disclosed. In one embodiment, a controller for a flyback converter includes a converter and a flyback controller. The converter is coupled to the flyback converter for...
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US20120092912 |
COMMUTATION METHOD OF AN ELECTRONIC POWER CONVERTER PHASE WITH REVERSE-CONDUCTING IGBTS
The invention relates to a method for commutating from a reverse-conducting IGBT (T1) operated in the diode mode to a reverse-conducting IGBT (T2) operated in the IGBT mode. According to the...
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US20100165684 |
POWER ADAPTER
A power adapter to receive at least one AC input power and transform to DC primary output power includes a power factor correction circuit to receive the AC input power and modulate to become a...
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US20110267863 |
TRANSFORMERLESS INVERTER COMPRISING A DC/DC CONVERTER
A transformerless inverter that serves to feed electricity from a DC current source into an AC power grid, has an inverter bridge and a DC/DC converter connected upstream of the inverter bridge....
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US20070183177 |
Traction converter having a line-side four-quadrant controller, and method therefor
A traction current converter includes a line-side four-quadrant converter which is provided with turn-off power semiconductors that are implemented as current converter valves. Each of the power...
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US20120268976 |
THREE-PHASE RECTIFIER CIRCUIT
In one aspect of the invention, a three-phase rectifier circuit having three input terminals and two output terminals includes a three-phase diode bridge, three switching circuits, and a voltage...
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US20110103099 |
SWITCHING CONTROL METHOD OF TRANSFORMER COUPLED BOOSTER
Provided is a switching control method of a transformer coupled booster to suppress an increase in energizing current in a transformer of the transformer coupled booster and downsize the...
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US20120212983 |
METHOD FOR CONVERTING POWER FOR A HIGH-VOLTAGE DIRECT VOLTAGE CONNECTION
A method for converting a multi-phase alternating voltage into a high-voltage direct voltage and then into a second multi-phase alternating voltage. The method utilizes first and second cascades of...
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US20060013024 |
Rectifier circuit having a power factor correction
A rectifier circuit having a power factor correction and providing a DC output is disclosed. AC power having an AC oscillation is supplied at two or more AC inputs. The rectifier circuit includes...
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US20120170325 |
High Efficiency Solar Wind Inverter With Hybrid DCDC Converter
The present invention is a new design topology for solar/wind inverters using a new hybrid DC/DC converter design. This hybrid converter topology eliminates a difficult design compromise between...
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US20120014146 |
POWER-DEPENDANT MAINS UNDER-VOLTAGE PROTECTION
A method and controller for power dependant mains under-voltage (“brown-out”) protection is disclosed. Brown-out protection is meant for protection against overheating due to low mains voltage and...
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US20110228566 |
Series resonant converter with overload delay and short-circuit protection mechanisms
The present invention is to provide a series resonant converter with an overload delay and short-circuit protection mechanism, which includes a voltage sensing circuit for sensing a voltage ripple...
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US20120281441 |
CIRCUIT FOR CONVERTING A DIRECT CURRENT VOLTAGE TO AN ALTERNATING CURRENT VOLTAGE
A circuit for converting a direct current voltage into an alternating current voltage includes a buck converter, a resonant DC voltage/DC voltage converter, a DC voltage/AC voltage inverter, and a...
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US20110080758 |
PLANT FOR TRANSMITTING ELECTRIC POWER
A plant for transmitting electric power comprises a direct voltage network for High Voltage Direct Current and at least one alternating voltage network connected thereto through a station. The...
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US20070127276 |
Power supply and display
A power supply capable of making soft start efficiently. A power supply (10) is such that the time lag from the soft start trigger representing the start of soft start control to the actual soft...
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US20120008347 |
METHOD FOR OPERATING A DC/DC CONVERTER CIRCUIT CONFIGURATION AND DC/DC CONVERTER CIRCUIT CONFIGURATION
A DC/DC converter circuit configuration contains a rectifier configuration, an inductance and at least one circuit breaker for switching the inductance on its input side. When controlling the...
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US20130121032 |
POWER SUPPLY REGULATION FOR ULTRA-LOW LOAD AND NO-LOAD OPERATION
A controller of a switching power converter employs a dynamically adaptive power supply regulation approach that improves low-load and no-load regulation to achieve ultra-low standby power in a...
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US20110038191 |
RECTIFIER CIRCUIT AND RADIO COMMUNICATION DEVICE USING THE SAME
A rectifier circuit includes an input terminal that receives an alternating-current signal, a first rectifier circuit that generates a first direct-current voltage from the alternating-current...
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US20110013440 |
RECTIFIER CIRCUIT
Switches perform switching at a timing when a first phase voltage and a second phase voltage outputted from a three-phase voltage source have a phase difference of 90°. Then, a ...
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US20110116291 |
HIGH EFFICIENCY MULTI-PHASE GENERATOR
A generator system that includes a six-phase AC machine and an active rectifier bridge employing low on-resistance switches, such as MOSFET switches, for converting the AC current from the machine...
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US20110267851 |
CONVERTER CIRCUIT WITH ADJUSTABLE DC BUS VOLTAGE
A method for controlling voltage of a DC bus in a converter circuit is provided. The method includes monitoring a duty cycle of a switch that connects a resistive circuit across the DC bus, the...
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US20090257260 |
ANALOG INPUT DEVICE
An analog input device according to the present invention includes a scanning circuit (3) including a first insulation transformer (T1) for insulating an analog signal inputted from a thermocouple...
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US20120113688 |
Interleaved flyback converter device with leakage energy recycling
An interleaved flyback converter device with leakage energy recycling includes: two flyback converters and an input power. Each flyback converter includes a capacitor, a switch, two diodes, and a...
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US20100080027 |
INTEGRATED AIRCRAFT POWER CONDITIONING UNIT
An integrated power conditioning unit includes a DC bus, a first terminal for connection to first AC equipment, a second terminal for connection to second AC equipment, a first inverter circuit...
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US20100302812 |
ADAPTER POWER SUPPLY
The present invention relates to an adapter power supply, which includes a switching unit for switching a DC voltage; a transformer which has a primary winding connected to the switching unit, a...
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US20110317450 |
AC-TO-DC POWER CONVERTING DEVICE
An AC-to-DC power converting device includes: a filter for filtering an external AC input voltage; a rectifier for rectifying the AC input voltage filtered by the filter to output a rectified...
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US20080310195 |
Bidirectional DC to DC Converter for Power Storage Control in a Power Scavenging Application
A bidirectional DC to DC converter having a first operational mode and a second operational mode includes a first terminal pair that has a positive terminal and a negative terminal and that...
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US20110286247 |
SENSING ARRANGEMENTS
A sensing arrangement and method a sense winding is used to provide a voltage which represents the voltage appearing across an in-circuit magnetic component. In a flyback phase, when the component...
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US20100309689 |
Bootstrap Circuitry
This invention generally relates to a bootstrap circuit for a switch mode power supply, a controller for a switch mode voltage converter, a switch mode flyback converter comprising the bootstrap...
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