Matches 101 - 150 out of 192 < 1 2 3 4 >


Match Document Document Title
US20080278983 Controlling Apparatus of a Power Converter of Single-Phase Current For Photovoltaic Generation System  
A control apparatus of a single-phase power converter for a photovoltaic power generation system is disclosed, including a POS MPPT controller for calculating a rating current by applying a POS...
US20080316782 SYSTEM AND METHOD FOR PRODUCTING ANHARMONIC MULTI-PHASE CURRENTS  
A system and method for producing anharmonic multi-phase currents wherein the harmonic component of an inverter is filtered and superimposed with a series of control pulses to create a control...
US20130099788 SYSTEM AND METHOD FOR GRADIENT AMPLIFIER CONTROL  
A gradient amplifier for driving a gradient coil is disclosed. The gradient amplifier includes a direct current (DC) bus for receiving DC voltage generated from a series resonant converter, an...
US20140021792 SOLAR POWER SYSTEM AND COMMUNICATION APPARATUS  
A solar power system includes at least one alternating-current module and a communication apparatus. Each alternating-current module includes a solar panel and an alternating-current inverter. The...
US20130148394 METHODS AND SYSTEMS FOR CONTROLLING A POWER CONVERSION DEVICE  
A power conversion system configured to provide alternating current (AC) power to a transformer is described. The power conversion system includes a power conversion device that includes a device...
US20100302819 SOLAR INVERTER AND CONTROL METHOD  
A power generation system including a photovoltaic (PV) module to generate direct current (DC) power is provided. The system includes a controller to determine a maximum power point for the power...
US20080278984 AUTOMATIC ZERO VOLTAGE SWITCHING MODE CONTROLLER  
A switching DC to AC power converter includes an automatic zero voltage switching (ZVS) mode controller. The automatic zero voltage switching mode controller may adjust a ZVS dead-time in...
US20090175061 INSTANTANEOUS LOAD CURRENT CONTROL SCHEME FOR VOLTAGE FED DC TO AC INVERTER SUPPLYING RESISTIVE-INDUCTIVE LOAD  
A control system is provided for controlling varying alternating current (AC) to a load with varying resistance and inductance. A plurality of nested control loops may employ cascaded proportional...
US20130182476 ADAPTIVE SAMPLING CIRCUIT FOR DETECTING THE DEMAGNETIZED VOLTAGE OF THE TRANSFORMER  
An adaptive sampling circuit of the power converter according to the present invention comprises a sample-and-hold unit and a signal-generation circuit. The sample-and-hold unit is coupled to a...
US20090059631 VOLTAGE-SENSED SYSTEM AND METHOD FOR ANTI-ISLANDING PROTECTION OF GRID-CONNECTED INVERTERS  
A method is provided for preventing islanding of a power source connected to an electric AC grid via an interface. The method senses an output voltage waveform of the interface, controls an output...
US20090067199 SWITCHED MODE POWER SUPPLY  
A switched mode power supply assembly (1) is described, comprising at least two switched mode power supply units (10i) coupled to each other in parallel; each power supply unit (10i) having an...
US20150076913 POWER CONVERTER WITH DIGITAL CURRENT CONTROL CIRCUIT  
A current control circuit (208) for a power converter (200) to control the switching thereof, wherein the current control circuit comprises a digital controller (210) using a logical input signal...
US20070047275 Bipolar power supply with lossless snubber  
In one aspect of the invention, an isolated power converter suitable for high power and high voltage applications comprises stacked rectifiers and lossless snubber circuits with inductors that...
US20130241292 PHOTOVOLTAIC GENERATION SYSTEM AND POWER FEEDING SYSTEM  
According to one embodiment, a system includes a battery to charge power and discharge a direct-current power to a converter, the converter supplying the converted power to a power system,...
US20140376289 METHODS, SYSTEMS, COMPUTER PROGRAM PRODUCTS, AND DEVICES FOR RENEWABLE ENERGY SITE POWER LIMIT CONTROL  
The present invention provides methods, systems, computer program products, and devices for renewable energy site power limit control that address conditions of plant saturation and loop delay. In...
US20090129132 CONTROL DEVICE FOR POWER CONVERTER  
A control circuit for a power converter includes a voltage command unit that generates a voltage command signal, a voltage command compensation unit that compensates the voltage command signal to...
US20110049990 GRID SYNCHRONISATION  
The invention relates to a grid synchroniser for connecting an AC output of a power converter to the AC grid mains. In one aspect the invention provides a grid synchroniser comprising an inverter...
US20120306406 CONTROL DATA DETERMINATION FROM PRIMARY-SIDE SENSING OF A SECONDARY-SIDE VOLTAGE IN A SWITCHING POWER CONVERTER  
A power distribution system includes controller of a switching power converter to control the switching power converter and determine one or more switching power converter control parameters. In...
US20120134188 Systems and Apparatus for Reducing Electromagnetic Interference and Methods of Assembling the Same  
An electric machine drive system is described. The system includes an inverter, an electric machine coupled to the inverter by at least one output conductor and including a ground connection, and...
US20130051098 ADAPTIVE SLOPE COMPENSATION PROGRAMMABLE BY INPUT VOLTAGE OF POWER CONVERTER  
A method for controlling a power converter is provided. The method includes the following steps. A switching signal coupled to switch a transformer for regulating the output of the power converter...
US20100149844 INVERTER APPARATUS  
An inverter apparatus converts a DC power of a capacitor charged via a rectifier circuit connected to a first AC power system into an AC power, and supplies the AC power to a second AC power...
US20100002470 METHOD FOR MAXIMUM POWER POINT TRACKING OF PHOTOVOLTAIC CELLS BY POWER CONVERTERS AND POWER COMBINERS  
This invention relates to a method for Maximum Power Point Tracking (MPPT) a photovoltaic cell by a power converter that provides an output current at voltages useful to operate electronics or...
US20090179608 METHOD AND SYSTEM FOR CONTROLLING A POWER INVERTER IN ELECTRIC DRIVES  
Methods and systems for controlling a power inverter in an electric drive system of an automobile are provided. A signal controlling the power inverter is modified utilizing a first voltage...
US20090256490 VOLTAGE SENSING CIRCUITS AND METHODS FOR INVERTERS  
A voltage sensing circuit includes a voltage divider and a voltage rectifier. The voltage divider divides a first output voltage on a first output voltage line to a first divided output voltage....
US20090159350 Vehicle Controller, Vehicle and Vehicle Control Method  
A controller for a vehicle including at least one motor driving wheels, an inverter driving the motor, and a boosting converter supplying a dc power supply current to the inverter, is provided...
US20140218984 INVERTER CONTROL MODULE WITH HARMONIC SUPPRESSION CAPABILITY  
An inverter control module electrically connected to an inverter module is disclosed to include an error detection unit for receiving a control signal and a feedback signal from an external source...
US20140192567 METHODS FOR CONTROLLING ELECTRICAL INVERTERS AND ELECTRICAL INVERTERS AND SYSTEMS USING THE SAME  
A system for generating a duty cycle control signal for controlling an inverter power train providing an output current waveform to a grid operating with a grid voltage waveform compares a...
US20090003023 METHOD AND SYSTEM OF CONTROLLING A POWER INVERTER  
Methods and systems for controlling a power inverter are provided. In accordance with one embodiment, a system for converting a direct current into an alternating current may include a switching...
US20100084924 APPARATUS AND METHOD FOR PRODUCING AC POWER  
A multi-input electrical power conversion device is provided for converting multiple DC energies each arising from different junctions in a multi-junction solar cells into AC energy. The device...
US20130027997 MAXIMUM POWER POINT TRACKING FOR POWER CONVERSION SYSTEM AND METHOD THEREOF  
An exemplary power conversion system comprises an MPPT unit, a DC bus, a power converter, and a converter controller. The MPPT unit receives a feedback current signal and a feedback voltage signal...
US20100008106 SWITCHING CONTROL CIRCUIT, SEMICONDUCTOR DEVICE AND SWITCHING POWER SOURCE APPARATUS  
At the starting time and an overload time in which the output voltage of the switching power source apparatus is low, if an overcurrent state, in which the ON period of the switching device...
US20100046258 POWER SUPPLY CONTROL SYSTEM  
A digital control system for a switch mode power supply (SMPS), the control system having a demand input for a signal indicating whether an output voltage of said SMPS is above or below a desired...
US20130258718 SYSTEM, METHOD, AND APPARATUS FOR POWERING EQUIPMENT DURING A LOW VOLTAGE EVENT  
Low voltage ride through systems, methods, and apparatus are disclosed. An exemplary method includes applying real power from a photovoltaic array to an AC grid with an inverter, detecting a sag...
US20130027993 POWER CONVERSION SYSTEM WITH TRANSIENT EVENT RIDE-THROUGH CAPABILITY AND METHOD THEREOF  
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...
US20100091532 METHOD AND APPARATUS FOR IMPROVED BURST MODE DURING POWER CONVERSION  
A method and apparatus for converting DC input power to AC output power. The apparatus comprises an input capacitor, a DC-AC inverter, a burst mode controller for causing energy to be stored in...
US20100124084 POWER CONVERTER WITH CONTROL CIRCUIT AND RELATED CONTROL METHOD  
A control circuit for use in a power converter has a multi-function terminal, a current comparator circuit, and an under-voltage detection circuit. The current comparator circuit compares current...
US20120250371 CONTROLLING AN INVERTER DEVICE OF A HIGH VOLTAGE DC SYSTEM FOR SUPPORTING AN AC SYSTEM  
The invention concerns a method of controlling an inverter device, a control device as well as an inverter device and a direct current power transmission system. The direct current power...
US20080266918 Polyphase Voltage Converter Control Method  
A method for driving a power bridge (1) which is used for controlling a multiphase electric load (3), connectable to said electric load (3) via several arms and drivable by switching functions...
US20140119080 INVERTER APPARATUS AND INVERTER SYSTEM  
According to one embodiment, an inverter apparatus includes a power conversion unit, a wireless communication unit and a control unit. The power conversion unit converts input power that is one of...
US20090251062 INVERTER  
A soft start circuit generates a soft start voltage which changes over time when light emission of an EEFL is started. A pulse modulator receives a feedback voltage that corresponds to the output...
US20140369098 MICRO INVERTER WITH DC-TO-AC CONVERTER AND SOLAR PHOTOVOLTAIC SYSTEM HAVING THE SAME  
A DC-to-AC converter receives a DC power generated from a solar panel and converts the received DC power into an AC power outputted through a power line. The DC-to-AC converter includes a signal...
US20140268957 Single Phase Power System Controller and Method Therefor  
Provided herein is a single phase power system controller and a method for controlling a single phase power system. The single phase power system controller comprises an error signal generator...
US20130057069 MAXIMUM POWER POINT TRACKER  
A method is provided for determining a value for an electrical output of a converter of renewable energy. The method comprises obtaining a signal representing the electrical output of the...
US20090174260 UPS System having a Function of Parallel Operation  
A UPS system includes one or more UPS units with identical or different capacities. A control circuit, used to control a DC/AC inverter of the UPS unit, includes a voltage feedback control circuit...
US20140153287 SYSTEM AND METHOD FOR IMPROVING POWER CONVERSION EFFICIENCY  
A power conversion system includes at least one switching unit. The switching unit includes a switching device including a channel and a body diode integrated with the channel. The switching...
US20120182774 Method For Operating A Converter In A System For Generating Electrical Energy  
Described is a method for operating a converter for a system for generating electrical energy. In an embodiment of the method, the output voltage of the converter is converted to a d, q coordinate...
US20100008113 SEMICONDUCTOR POWER CONVERSION DEVICE  
A surge voltage target setting unit (103) obtains a main circuit power supply voltage (VH) of a semiconductor power conversion device based on an inter-terminal voltage (Vce) of a semiconductor...
US20120049782 Electric power converter, driving apparatus and electric power steering apparatus  
A control unit of an electric power converter, which is used in a three-phase motor having two winding wire systems, performs for a first duty instruction signal regarding a voltage applied to a...
US20120287687 POWER CONVERTER MODULE  
A power converter module is disclosed, which is an all-digital module. The power converter module includes a reference voltage generation unit, a voltage loop control unit, a current loop control...
US20120075892 DISCONTINUOUS PULSE WIDTH DRIVE MODULATION METHOD AND APPARATUS  
Control systems, methods and power conversion systems are presented for reducing common mode voltages in AC motor loads driven by inverter PWM control using switching sequences with only active...

Matches 101 - 150 out of 192 < 1 2 3 4 >