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US20150138852 OVERLOAD LIMITATION IN PEAK POWER OPERATION  
An exemplary method for operating a converter to supply electrical power to a load includes controlling the converter for a provided overload time so that overload power is applied to the load,...
US20140119071 Overload Protection Saving Circuit  
An overload protection saving circuit provided by the present invention has an input power circuit, an output power circuit, a control circuit, an overload timing circuit, and a saving circuit....
US20120147635 SYNCHRONOUS RECTIFIED PWM REGULATOR WITH AUTO FAULT CLEARING  
A fault tolerant synchronous rectifier PWM regulator system and method are disclosed. In the system and method, a force commutated synchronous rectifier is operable to be coupled to an electrical...
US20150124499 ACTIVE DAMPER AND POWER SUPPLY INCLUDING THE SAME  
An active damper and a power supply according to exemplary embodiments include: a damper resistor coupled to an input voltage; a damper switch coupled in parallel with the damper resistor; and a...
US20110249475 GRID-CONNECTED INVERTER  
A grid-connected inverter includes first and second power conversion circuits, a contactor and a control circuit. The first conversion circuit converts a first DC voltage to a second DC voltage....
US20150194874 HARMONIC DISPLACEMENT REDUCTION  
Reducing voltage excursions in a circuit comprises: performing resonant commutation, including transferring, via a first set of one or more diodes, energy stored by a set of one or more parasitic...
US20130119895 LED DRIVING CIRCUIT AND DRIVING CONTROLLER FOR CONTROLLING THE SAME  
A driving controller for driving a load is disclosed. The driving circuit includes a driving power supply and the driving controller. The driving power supply provides a first power source to the...
US20140268938 AC VOLTAGE SENSOR WITH LOW POWER CONSUMPTION  
A power converter controller includes an input sense circuit to receive an input sense signal representative of an input of a power converter. A zero-crossing detector is coupled to the input...
US20130128635 METHOD FOR OPERATING A CONVERTER AND A SWITCHING CELL AND A CONVERTER  
Exemplary embodiments are directed to a method for operating a converter, wherein the converter includes a plurality of bridge branches having one or more switching cells connected in series. Each...
US20090323377 OPTIMAL UTILIZATION OF POWER CONVERTERS FOR ENGINE START SYSTEM  
A method and system for utilization of power converters in an aircraft engine start system includes measurement of power converter operation data that is utilized with a mathematical model of the...
US20150162819 SHORT PROTECTION CIRCUIT FOR POWER SWITCH AND ASSOCIATED PROTECTION METHOD  
A short protection circuit for protecting a power switch. The short protection circuit has a transistor and compares a differential voltage between a first end of the power switch and a second end...
US20140192570 POWER GENERATION SYSTEM AND METHOD FOR OPERATING A POWER GENERATION SYSTEM  
According to an embodiment, a power generation system is provided comprising a power generator; a plurality of converter modules, each converter module having a DC link, wherein the DC link of...
US20150109835 OUTPUT OVERVOLTAGE PROTECTION METHOD AND CIRCUIT FOR SWITCHING POWER SUPPLY AND SWITCHING POWER SUPPLY THEREOF  
In one embodiment, an output overvoltage protection method for a switching power supply, can include: (i) charging a first capacitor by a first current during a first time interval of a switching...
US20130182471 OVERVOLTAGE PROTECTION CIRCUIT FOR AT LEAST ONE BRANCH OF A HALF-BRIDGE, INVERTER, DC/DC VOLTAGE CONVERTER AND CIRCUIT ARRANGEMENT FOR OPERATING AN ELECTRICAL MACHINE  
An overvoltage protection circuit is provided for at least one branch of a half-bridge which includes a controllable semiconductor switch element and a free-wheeling diode connected in series and...
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...
US20110080759 FEEDING SYSTEM FOR AN INDUCTIVE LOAD FROM AN ENERGY SOURCE WITH VARIABLE POWER  
A system is provided for the feeding of an inductive load, with electric power of continuous current, generated from an energy source and, more in particular, to a feeding system for a vibratory...
US20120099351 ELECTRONIC APPARATUS  
An electronic apparatus having reinforced power saving and safety functions, the electronic apparatus may include: a power supply which converts alternating current (AC) power input from an AC...
US20140159641 METHOD AND APPARATUS FOR CHARGING BATTERIES HAVING DIFFERENT VOLTAGE RANGES WITH A SINGLE CONVERSION CHARGER  
Embodiments for a battery charger include a single conversion switched mode power supply having a bias winding on the primary side of the power transformer. The bias winding produces an output...
US20060114700 Method for controlling the transient response of a power converter powering a load, transient response controller and power converter  
A method for controlling the transient response of a power converter powering a load, said power converter comprising a power switch, a synchronous rectifier and a capacitor coupled between an...
US20110140725 OVER CURRENT PROTECTION TEST SYSTEM  
A system includes a switching power supply, an electric load connected to the switching power supply, a voltage regulation circuit, and a detect device. The voltage regulation circuit is connected...
US20130103349 POWER SUPPLY UNIT WITH SERVICE LIFE EXPIRATION ALARM AND METHOD THEREOF  
A power supply unit includes a storage unit, a temperature detecting unit, a ripple voltage detecting unit, and a processor. The storage unit stores a conversion relationship between ripple...
US20080253155 Power Supply with Current Limiting Circuits  
A power supply (200) is provided having a plurality of independent current limiting circuits. A first current limiting circuit (6) provides protection against a short circuit or other extraneous...
US20100254162 Modular power adapter  
A modular power adapter and method for using the same which increases the ease of a user's travel with portable electronic devices. The modular power adapter includes an output module which may be...
US20140177297 POWER SUPPLY CIRCUIT  
A power supply circuit preventing any overvoltage to an electronic element includes a voltage conversion unit and a voltage clamping unit. The voltage conversion unit converts voltage of a power...
US20120063181 Modular Voltage Source Converter  
Voltage source converter based on a chain-link cell topology including one or more phases, each of the phases having one or more series-connected chain-link cell modules connected to each other....
US20140268939 FAULT TOLERANT POWER SUPPLY INCORPORATING INTELLIGENT GATE DRIVER-SWITCH CIRCUIT TO PROVIDE UNINTERRUPTED POWER  
A fault tolerant power supply system includes at least one load switch configured to connect an input voltage to an output node of the load switch when the load switch is turned on and at least...
US20140133200 CLAMP SNUBBER CIRCUIT AND RESISTANCE ADJUSTMENT METHOD FOR THE SAME  
A clamp snubber circuit for reducing a value of a peak voltage on a power switch of a power converter includes: a clamp switch; a clamp capacitor having a first terminal electrically coupled to...
US20130121044 Power Converter Controller IC Having Pins with Multiple Functions  
A controller integrated circuit (IC) for controlling a power converter uses one or more IC pins having plurality of functions such as configuration of a parameter supported by the controller IC...
US20140313797 POWER ELECTRONIC MODULE  
In the field of voltage source converters which provide high voltage direct current (HVDC) power transmission and reactive power compensation there is a need for an improved power electronic...
US20080253154 Inrush Current Limiter Device and Power Factor Control (Pfc) Circuit Having an Improved Inrush Current Limiter Device  
The present invention relates to an inrush current limiter device (4) for limiting inrushing current to a connectable load (3) comprising: at least one switchable IGBT-based limiter unit (5) for...
US20140084835 LOAD DRIVING DEVICE AND ELECTRONIC DEVICE USING SAME  
A load driving device according to the present invention has: an internal circuit (DRV) that operates in response to the supply of a power supply voltage (HV or LV); an output circuit (PD1 and...
US20140369093 ADAPTIVE RCD SNUBBER AND METHOD FOR SWITCHING CONVERTER  
Exemplary embodiments provide a method and an adaptive RCD snubber circuit for a switching converter having a series-connection of a main inductor and a main switching device. A voltage stress of...
US20110103108 Converter Valve  
A converter valve unit including a plurality of parallel connected semiconducting elements, a free-wheeling diode and a control unit.
US20130051093 METHOD AND APPARATUS FOR VARYING CURRENT LIMIT TO LIMIT AN OUTPUT POWER OF A POWER SUPPLY  
A power supply controller includes an input voltage sense input and an output voltage sense input coupled to sense an input voltage and an output voltage of a power supply. A current limit circuit...
US20150009729 CIRCUIT HAVING A FAULT PROTECTING FUNCTION  
A circuit includes a switching module, a control module, and a driving module. The driving module is electrically coupled between the control module and the switching module for generating a...
US20120314463 POWER SUPPLY WITH RESTART CIRCUIT  
A power supply protected against open circuit conditions at its output terminals, and methods for so protecting, are disclosed. A front end circuit receives an input voltage and provides a...
US20140049995 DIAGNOSTICS FOR MULTI-LEVEL MEDIUM VOLTAGE DRIVE USING MECHANICAL BYPASS  
A system and method for performing diagnostics in a medium voltage drive. The system includes a power cell and a bypass mechanism. The bypass mechanism is operably connected to output terminals of...
US20080094866 CAPACITOR-SWITCHED LOSSLESS SNUBBER  
A regenerative snubber circuit for a boost converter is provided which greatly reduces the switching losses of the IGBT in the converter. The circuit uses no additional magnetic components, has a...
US20090257255 ACTIVE SNUBBER FOR TRANSITION MODE POWER CONVERTER  
A transition mode power converter having an active snubber the operation of which is controlled using an auxiliary winding on the transformer of the power converter. In one embodiment, the power...
US20120195078 PREVENTION OF SAFETY HAZARDS DUE TO LEAKAGE CURRENT  
Medical apparatus includes an electrical power supply, which is configured for connection to an electrical medical device that is coupled to a body of a patient. In one embodiment, the apparatus...
US20150049526 INDIRECT MATRIX CONVERTER  
A converter receives input of an AC voltage, converts the AC voltage into a DC voltage, and applies the DC voltage between a first power line on a positive electrode side and a second power line...
US20110149619 METHOD AND APPARATUS FOR VARYING CURRENT LIMIT TO LIMIT AN OUTPUT POWER OF A POWER SUPPLY  
A power supply controller is disclosed. An example power supply controller includes an input voltage sense input coupled to sense an input voltage sense signal representative of an input voltage...
US20140293666 CIRCUIT ARRANGEMENT FOR SUPPRESSING AN ARC OCCURRING OVER A CONTACT GAP OF A SWITCHING MEMBER  
The disclosure relates to a circuit arrangement for suppressing an arc occurring during a switching process, wherein a current bypass path comprises a PTC resistor connected in series with a fuse....
US20100315847 COMPONENT FAULT DETECTION FOR USE WITH A MULTI-PHASE DC-DC CONVERTER  
Provided herein are circuits, systems and methods that monitor for a fault within a multi-phase DC-DC converter. This can include monitoring the channels of the DC-DC converter for way out of...
US20100315846 SWITCHING POWER SUPPLY AND OVER-TEMPERATURE PROTECTION METHOD  
A switching power supply includes an energy-storing device, a power switch, a driving circuit and a thermal sensing device. The energy-storing device is coupled to an input power source and...
US20130308355 POWER CONVERTER AND MATRIX CONVERTER  
The number of ICs used for a power converter is reduced. The power converter includes n power transistors each having an emitter terminal or a source terminal connected to a common line, and...
US20090196764 HIGH FREQUENCY ELECTRIC-DRIVE WITH MULTI-POLE MOTOR FOR GAS PIPELINE AND STORAGE COMPRESSION APPLICATIONS  
An integrated electric-drive compressor system utilizes a high frequency drive for powering the multi-pole pair motor. The electric motor and compressor are housed in a common pressure casing. The...
US20080212345 DC-DC CONVERTER SYSTEM  
A DC-DC converter system is provided to improve switching control operation of a battery charging DC-DC converter (3) in an overheat temperature state without necessitating complication of a...
US20140071720 VOLTAGE CONVERTER AND ASSOCIATED OVER-VOLTAGE PROTECTION METHOD  
A voltage converter includes: an input terminal receiving an input voltage; an output terminal providing an output voltage; a switching circuit having a main switch configured to regulate the...
US20090273954 Protection Method, System and Apparatus for a Power Converter  
Among many embodiments, a power converter and a method for operating a power converter are disclosed. The power converter may include a pair of switches connected in series, an output transformer...

Matches 1 - 50 out of 135 1 2 3 >