|
Match
|
Document |
Document Title |
|
|
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....
|
|
|
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...
|
|
|
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...
|
|
|
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...
|
|
|
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...
|
|
|
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...
|
|
|
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 with...
|
|
|
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...
|
|
|
US20090067199 |
SWITCHED MODE POWER SUPPLY
A switched mode power supply assembly ( 1 ) is described, comprising at least two switched mode power supply units ( 10 i ) coupled to each other in parallel; each power supply unit ( 10 i ) having...
|
|
|
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...
|
|
|
US20090046488 |
INVERTER CIRCUIT
An inverter circuit ( 20 ) includes a transformer (T 2 ) including a primary winding and a secondary winding including a high voltage terminal, a first copper foil (P 21 ), a power stage circuit (...
|
|
|
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...
|
|
|
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...
|
|
|
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...
|
|
|
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...
|
|
|
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...
|
|
|
US20080310202 |
Method for Automatic Adjustment of the Mains-System Frequency Parameter of a Frequency Converter Which Is Connected to a Mains System
The invention relates to a method for automatically recognizing a value of the parameter network frequency of a frequency converter connected to a network. According to the invention, the curve of...
|
|
|
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...
|
|
|
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...
|
|
|
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...
|
|
|
US20080259662 |
AC power supply and method for controlling output current thereof
An AC power supply and a method for dynamically controlling the output current thereof are disclosed. An output voltage stop signal is used to disable a DC/AC converter from outputting. During a...
|
|
|
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...
|
|
|
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...
|
|
|
US20080225561 |
Apparatus and Method for Controlling Inverter
An apparatus and method for controlling an inverter capable of enhancing reliability of current measurement by ensuring an optimal time for which effective voltage vectors are applied to detect a...
|
|
|
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...
|
|
|
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...
|
|
|
US20080165555 |
METHOD AND APPARATUS FOR CYCLE ERROR CORRECTION FOR A POWER CONVERTER DEVICE, SUCH AS AN ELECTRONIC POWER INVERTER
Cycle error correction is performed in an electronic power system to compensate for a difference between an AC grid side frequency and an AC load side frequency. The electronic power system can...
|
|
|
US20080130333 |
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...
|
|
|
US20080130332 |
Power Supply Apparatus, Methods and Computer Program Products Using D-Q Domain Based Synchronization Techniques
A value of an AC reference waveform is obtained and converted to a d-q reference frame value. A phase estimate is generated responsive to the d-q reference frame value. An AC output of the power...
|
|
|
US20080123381 |
Inverter Circuit and Control Circuit Thereof
An inverter circuit and a control circuit thereof for converting DC power from the renewable energy or distributed energy into AC power so as to be fed into the AC utility power system according to...
|
|
|
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...
|
|
|
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...
|
|
|
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...
|