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US20120313443 |
SMART AND SCALABLE OFF-GRID MINI-INVERTERS
A method and apparatus is disclosed for intelligently inverting DC power from DC sources such as photovoltaic (PV) solar modules to single-phase or three-phase AC power to supply power for off-grid...
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US20100315850 |
POWER INVERTER
A power inverter is provided for converting DC power into AC power. The inverter may be operable to couple to two or more transformer modules each operable to convert at least a portion of the DC...
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US20110316480 |
SYSTEMS AND METHODS FOR DYNAMIC POWER COMPENSATION, SUCH AS DYNAMIC POWER COMPENSATION USING SYNCHROPHASORS
An electrical power generation system, such as a solar power inverter, can provide dynamic real-time power compensation, so as to mitigate the effects of voltage sags and swells (e.g., on a utility...
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US20120212065 |
SCALABLE AND REDUNDANT MINI-INVERTERS
The Scalable and Redundant Mini-inverters as described in this invention include double, triple, or quadruple redundant capabilities so that the Mini-inverters can work in a harsh environment for a...
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US20090206792 |
AUTOMATIC DISCONNECT OF AN AC SOURCE FROM A CONVERTER
A system for automatic disconnect of an AC source from a converter that includes a converter and a converter. The converter includes a power supply capable of being connected to an alternating...
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US20120319490 |
Parallel Connected Inverters
A distributed power system wherein a plurality of power converters are connected in parallel and share the power conversion load according to a prescribed function, but each power converter...
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US20120033468 |
POWER CONVERSION SYSTEMS
In a general aspect, a power conversion system includes a power converter, a transformer, and a voltage adjustment device. The power converter is configured to receive a variable DC power generated...
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US20130063993 |
ALTERNATING CURRENT LINE EMULATOR
An alternating current (AC) line emulator includes an AC power supply and an automatic regulating load. The AC power supply is used for providing an AC line frequency and an AC line voltage. The...
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US20120188806 |
POWER DISTRIBUTION SYSTEM
A power distribution system includes a DC-DC converter which outputs a DC power after converting the DC power outputted from a DC power source to a desired voltage level. In the power distribution...
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US20110291486 |
METHOD FOR DISTRIBUTED POWER HARVESTING USING DC POWER SOURCES
A system and method for combining power from DC power sources. Each power source is coupled to a converter. Each converter converts input power to output power by monitoring and maintaining the...
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US20100208501 |
POWER TRANSFER MANAGEMENT FOR LOCAL POWER SOURCES OF A GRID-TIED LOAD
A power transfer system provides power factor conditioning of the generated power. Power is received from a local power source, converted to usable AC power, and the power factor is conditioned to...
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US20120081937 |
Converters and Inverters for Photovoltaic Power Systems
A power system includes a plurality of DC/DC converters and a DC/AC inverter. The plurality of DC/DC converters having outputs electrically connected in parallel for supplying a DC voltage bus to...
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US20130043724 |
Solar Synchronized Loads for Photovoltaic Systems
An electrical power supply arrangement includes a solar power device that converts sunlight into DC electrical power. A DC load runs on the DC current electrical power. The DC load may be...
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US20130043723 |
SOLAR SYNCHRONIZED LOADS FOR PHOTOVOLTAIC SYSTEMS
An electrical power supply arrangement includes a solar power device that converts sunlight into DC electrical power. A DC load runs on the DC current electrical power. The DC load may be...
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US20110141779 |
Boost Multilevel Inverter System
A boost inverter includes a first capacitor for connection in parallel with a dc supply voltage; a second capacitor connected in series with the first capacitor; an energy transfer path including a...
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US20120170336 |
POWER CONVERSION CIRCUIT
The present invention discloses a power conversion circuit. A control module controls a pulse width modulation regulator to regulate a duty cycle of a DC-DC converter according to the direct...
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US20080094121 |
INVERTER DRIVING CIRCUIT AND INVERTER CONTROL CIRCUIT
A phase adjusting circuit is provided that is capable of adjusting a delay time at a rise or fall of a driving signal for driving an inverter. A phase adjusting circuit is provided upstream of a...
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US20080238195 |
DISTRIBUTED MAXIMUM POWER POINT TRACKING SYSTEM, STRUCTURE AND PROCESS
Distributed maximum power point tracking systems, structures, and processes are provided for power generation structures, such as for but not limited to a solar panel arrays. In an exemplary solar...
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US20120039101 |
Method of and Apparatus for Connecting a Photovoltaic Device to an AC Power Grid
A method of connecting a photovoltaic device to an AC power grid through an inverter includes monitoring a DC voltage at an input of an inverter, and activating the inverter when the monitored DC...
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US20120140535 |
METHOD FOR OPERATING A CONVERTER CIRCUIT
A method for operating a converter circuit is provided. The converter circuit includes a converter unit and a transformer. The transformer includes at least one winding set with a primary winding...
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US20130077366 |
SOLAR ENERGY GENERATION SYSTEM TRACKING ADAPTIVE MAXIMUM POWER POINT AND ITS METHOD
Provided are a solar energy generation system having an adaptive maximum power point tracking function and a method thereof. The solar energy generation system includes: a minimum maintenance...
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US20090027932 |
ALTERNATIVE-SOURCE ENERGY MANAGEMENT
A power converter system includes a power converter system including: a DC-to-AC power converter; a first output configured to be coupled to a power grid; a first input configured to be coupled to...
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US20090046488 |
INVERTER CIRCUIT
An inverter circuit (20) includes a transformer (T2) including a primary winding and a secondary winding including a high voltage terminal, a first copper foil (P21), a power stage circuit (21)...
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US20110163669 |
DC/AC INVERTER SUBSTRATE HAVING VOLTAGE ABNORMALITY DETECTOR CIRCUIT
A DC/AC inverter substrate includes a voltage abnormality detector circuit. All of a high voltage side detection sensor, a low voltage side detection sensor, and a high-voltage and low-voltage...
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US20120057377 |
UNINTERRUPTIBLE POWER SUPPLY WITH A DUAL GAIN VOLTAGE REGULATOR CONTROLLING AN INVERTER OUTPUT VOLTAGE BASED ON ACTIVE AND REACTIVE COMPONENTS OF CURRENT
An uninterruptible power supply (UPS) system has an inverter having an output coupled to a primary side of an output transformer. The UPS system has a controller having a dual gain voltage...
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US20080198639 |
OPERATION CONTROL CIRCUIT
It is an object of the present invention to provide an operation control circuit without using a photo-coupler. The operation control circuit controls the operation of an LED in a DC/AC inverter...
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US20090021967 |
Method for controlling a generation of an alternating current in a vehicle
In a method for controlling a generation of an alternating current in a vehicle equipped with a battery and an inverter, the inverter is electrically connectable to the battery in order to generate...
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US20110141778 |
SWITCH CONTROLLER FOR SWITCHING POWER SUPPLY AND METHOD THEREOF
A switch controller for switching power supply is coupled to an auxiliary winding of the switching power supply through a detecting resistor. The switch controller provides a detecting current...
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US20120147638 |
ELECTRIC POWER CONVERSION DEVICE
An electric power conversion device includes a power conversion circuit for receiving electric power from an overhead wire through an LC filter circuit composed of a reactor and a capacitor and...
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US20060261830 |
Inverter thermal protection
An inverter has three redundant modes of thermal protection providing fire protection and secures protection of the inverter from thermal damage. An embodiment of the present invention is disclosed...
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US20110164440 |
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...
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US20100277002 |
POWER CONVERSION SYSTEMS
In a general aspect, a power conversion system includes a power converter, a transformer, and a voltage adjustment device. The power converter is configured to receive a variable DC power generated...
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US20080084722 |
Inverter Circuit and Backlight Unit Having the Same
An inverter circuit according to an embodiment comprises an input unit to which a first voltage is applied, a transformer for transforming the first voltage output from the input unit, a first...
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US20110254372 |
Alternative-Source Energy Management
A power converter system includes a power converter system including: a DC-to-AC power converter; a first output configured to be coupled to a power grid; a first input configured to be coupled to...
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US20090010030 |
Power supply circuit with feedback circuit
An exemplary power supply circuit (200) includes a pulse width modulation circuit (220) providing a pulse signal, a voltage conversion circuit (210) converting a primary voltage to an output...
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US20120020128 |
FUEL CELL SYSTEM
A fuel cell system FCS includes a fuel cell FC, a motor ES4 connected to the fuel cell FC, an FC boost converter ES6 which raises the output voltage of the fuel cell FC to output the voltage to the...
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US20080055949 |
SYSTEM INTERCONNECTION INVERTER
Each time a system interconnection inverter is booted up, a control program, which is stored in a remote-controller, is downloaded and stored in a RAM in a main body side. When the system...
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US20110292700 |
POWER CONVERSION DEVICE AND METHOD FOR CONTROLLING THEREOF
In a power conversion device that includes a PWM converting means for generating a PWM pulse by comparing three-phase voltage commands with a triangular wave carrier signal, a power converter for...
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US20120205974 |
Regulation of Inverter DC Input Voltage in Photovoltaic Arrays
A converter unit configured to couple to a photovoltaic panel (PV) may include a controller to sense an output voltage and output current produced by the photovoltaic panel, and manage the output...
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US20100309695 |
Method and apparatus for improved burst mode during power conversion
A method and apparatus for coupling power to an AC power grid. In one embodiment, the method comprises interleaving a storage period and a burst period, wherein (i) energy is stored during the...
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US20100073976 |
DC/AC CONVERTER
A DC/AC converter includes: a resonant circuit including a transformer having a primary winding and a secondary winding and at least one capacitor, in which the capacitor is connected to at least...
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US20080238333 |
Inverter, Backlight Assembly Having the Same and Display Apparatus Having the Same
A display apparatus includes a display panel and a backlight assembly including a lamp and an inverter. The inverter includes a main transformer, a main driver and a voltage controller. The main...
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US20110292701 |
METHOD AND APPARATUS FOR IMPROVED BURST MODE DURING POWER CONVERSION
A method and apparatus for power conversion. In one embodiment, the apparatus comprises a DC-AC conversion stage; an intermediate capacitor coupled across the DC-AC conversion stage; and a burst...
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US20110266992 |
Power Conversion Device
A power conversion device includes a power switching circuit that has a plurality of series circuits in each of which a switching element that operates as an upper arm and a switching element that...
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US20130082611 |
FEED FORWARD CONTROLLED VOLTAGE TO CURRENT SOURCE FOR LED DRIVER
A DC to DC converter receives a DC input voltage and generates an output DC voltage. A current sensor measures a DC input current. A control circuit is coupled to the current sensor for controlling...
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US20100067271 |
REACTIVE POWER COMPENSATION IN SOLAR POWER SYSTEM
A method of providing reactive power support is proposed. The method includes detecting at least one of a plurality of network parameters in a distributed solar power generation system. The...
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US20120104960 |
CIRCUIT FOR CONVERTING DC INTO AC PULSED VOLTAGE
The present invention proposes a circuit for converting DC into AC pulsed voltage. The circuit comprises two or four controllable semiconductor switches as well as a corresponding controller unit....
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US20110255316 |
Isolating Circuit for DC/AC Converter
An isolating circuit for a DC/AC converter includes an input, an output, an energy storage element and a switch element. The DC/AC converter includes an energy storage isolated from mains during a...
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US20080211418 |
Inverter circuit with single sampling unit and liquid crystal display with same
An exemplary inverter circuit (2) includes a full-bridge circuit (21) for converting a DC voltage into an AC low voltage, main inverse transformers (22) for converting the AC low voltage into an AC...
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US20130070496 |
METHOD AND APPARATUS FOR POWER MODULE OUTPUT POWER REGULATION
A method and apparatus for regulating power production. In one embodiment, the method comprises comparing a line voltage level to a first threshold and a second threshold, wherein the line voltage...
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