#H02J3/01

DEVICE FOR THE RETURN OF HOMOPOLAR RESIDUAL CURRENTS FLOWING THROUGH THE NEUTRAL OF AN ELECTRICAL DISTRIBUTION SYSTEM

A passive stabilizer designed to attract residual neutral currents before they reach the transformer. This function prevents faults caused by current ‘returns’ between single-phase loads and their win…

DRIVE·Jun 11·1 min read

H02J3/01 Fabian Veloso

POWER COUPLING

A power coupling for the control of energy flow in an electrical system connected to a low- or medium-voltage grid via a transformer, wherein it is fitted with inputs for RES-type devices, in particul…

DRIVE·Jun 10·1 min read

H02J3/01 LOPI ELEKTRONIKA SP Z O O [PL]

CONTROL DEVICE AND ACTIVE FILTER DEVICE

A control device (100) for an active filter (80) connected in parallel with a load (4b) at an installation point (4a) with respect to an AC power supply (2) provided in a power system includes a harmo…

DRIVE·Apr 29·2 min read

H02J3/01 MITSUBISHI ELECTRIC CORP [JP]

POWER QUALITY GRADE DETERMINATION METHOD AND APPARATUS IN POWER GRID, DEVICE AND STORAGE MEDIUM

The present application relates to a power quality level determining method and apparatus for a power grid, a device, and a storage medium. The method includes: obtaining a harmonic current to be comp…

DRIVE·Mar 11·2 min read

H02J3/01 CHINA CREC RAILWAY ELECTRIFICATION BUREAU GROUP [CN]

HARMONIC FILTER FOR ALTERNATING CURRENT INSTALLATIONS

The present invention discloses a harmonic filter (1,2) for single-phase and three-phase alternating current installations using two coils (10, 11) arranged in series, each of which is helically wound…

DRIVE·Feb 11·1 min read

H02J3/01 ISTA SE [DE]

GRID-TIED INVERTER APPARATUS AND GRID-TIED CONTROL METHOD

This application provides a grid-tied inverter apparatus and a grid-tied control method. The inverter apparatus includes an inverter circuit, a controller, and a filter circuit. The controller is conf…

DRIVE·Dec 31·2 min read

H02J3/01 HUAWEI DIGITAL POWER TECH CO LTD [CN]

SYSTEMS AND METHODS FOR PARALLELING 3-WIRE AND 4-WIRE 3-PHASE ACTIVE HARMONIC FILTERS

Aspects of the disclosure include a power system comprising at least one three-wire active harmonic filter (AHF) configured to be coupled to, and provide compensation current to, a three-phase load, a…

DRIVE·Nov 19·2 min read

H02J3/01 SCHNEIDER ELECTRIC USA INC [US]

POWER CONVERTER AND HEAT PUMP SYSTEM PROVIDED THEREWITH

Defining fsw (kHz) as the carrier frequency adopted for generation of a drive signal (Sd), Pmax (kW) as the maximum input power of a power conversion unit (10), and Td (µs) as the dead time of the dri…

DRIVE·Nov 5·1 min read

H02J3/01 DAIKIN IND LTD [JP]

CONTROL METHOD AND SYSTEM FOR IMPROVING POWER NETWORK STABILITY

The invention provides a control method and system for power converters that are electrically interconnected through a power grid. The control mechanism uses a digital model of a mechanical shaft for …

DRIVE·Oct 29·1 min read

H02J3/01 LUXEMBOURG INST SCIENCE & TECH LIST [LU]

HIGH-FREQUENCY CURRENT SOURCE FOR AN ACTIVE EMI FILTER, ACTIVE EMI FILTER AND USE OF AN ACTIVE EMI FILTER

A high-frequency current source with a symmetric bipolar output stage piloted by an active bias network with an extended temperature range. The source is configured to provide a high impedance at 1 MH…

DRIVE·Sep 24·1 min read

H02J3/01 SCHAFFNER EMV AG [CH]

POWER SUPPLY SYSTEM, POWER SUPPLY METHOD, CONTROL APPARATUS, AND COMPUTER STORAGE MEDIUM

This application provides a power supply system, a power supply method, a control apparatus, and a computer storage medium, which have high power supply efficiency, high loading capability, and little…

DRIVE·Sep 3·2 min read

H02J3/01 HUAWEI DIGITAL POWER TECH CO LTD [CN]

POWER SUPPLY SYSTEM AND GRID-CONNECTED CONTROL METHOD

This application provides a power supply system and a grid-connected control method. The power supply system includes a power supply, a collection control circuit, a load, and an inverter. The collect…

DRIVE·Sep 3·2 min read

H02J3/01 HUAWEI DIGITAL POWER TECH CO LTD [CN]

MULTI-INVERTER PARALLEL SYSTEM, AND GRID CONNECTION CONTROL METHOD FOR INVERTER

A multi-inverter parallel system and a method for controlling grid connection of an inverter are provided. The system includes a first inverter and a second inverter. The first inverter includes a fir…

DRIVE·Jul 9·2 min read

H02J3/01 HUAWEI DIGITAL POWER TECH CO LTD [CN]

HARMONIC REDUCE SYSTEM AND UNINTERRUPTIBLE POWER SUPPLY INCLUDING SAME

Some aspects of the present disclosure provide a harmonic reduce control system for controlling an inverter, including a phase-locked loop controller, a voltage sum loop controller, a repeative contro…

DRIVE·May 15·1 min read

H02J3/01 SANTAK ELECTRONIC (SHENZHEN) CO., LTD.

Alternating-Current Power Harmonic-Based Circuit State Detection

This document describes systems for and techniques of alternating-current (AC) power harmonic-based circuit state detection. In various aspects, a system includes a component, a bypass circuit for the…

DRIVE·Mar 6·1 min read

H02J3/01 Google LLC

PHOTOVOLTAIC SOLAR INVERTER WITH AN AC GRID FILTER WITHOUT INDUCTANCE

The present invention discloses a photovoltaic solar inverter with an AC grid filter without inductance connectable to the AC grid. The inverter comprises: a power module for converting a DC input vol…

DRIVE·Feb 12·2 min read

H02J3/01 POWER ELECTRONICS ESPANA S L [ES]

ACTIVE RECTIFIER WITH PHASE LOCKED VARYING SWITCH FREQUENCIES

A power distribution system includes a variable frequency alternating current (AC) generator, an active rectifier electrically connected to the variable frequency AC generator such that AC power outpu…

DRIVE·Dec 5·1 min read

H02J3/01 Hamilton Sundstrand Corporation

SYSTEMS AND METHODS FOR REDUCING HARMONIC CONTENT IN A POWER NETWORK HAVING DISTRIBUTED ENERGY RESOURCES AND DISTRIBUTED INVERTER SYSTEMS

A controller system reduces destructive harmonic content within a power network system, the power network system comprising one or more distributed energy resources, one or more distributed inverter s…

DRIVE·Nov 14·1 min read

H02J3/01 Nanyang Technological University

ELECTRIC POWER QUALITY CONTROL METHOD AND DEVICE FOR OIL PRODUCTION PLATFORM, AND STORAGE MEDIUM

Disclosed are an electric power quality control method and device for an oil production platform, and a storage medium. The method includes: obtaining test data of electrical loads of power distributi…

DRIVE·Sep 26·2 min read

H02J3/01 Cangzhou Power Supply Company, State Grid Hebei Electric Power Co., Ltd.

POWER CONVERSION APPARATUS

According to one embodiment, a power conversion apparatus (10) comprises a controller (16) and a multi-level converter (12) connected to power supply lines in parallel with a load. Based on a detected…

DRIVE·Sep 4·1 min read

H02J3/01 TOSHIBA CARRIER CORP [JP]

POWER CONVERSION DEVICE, CONTROL DEVICE, AND DISTRIBUTED POWER SOURCE SYSTEM

A power conversion device includes a major circuit part converting a power of a distributed power source into AC power corresponding to a power system, and a controller controlling an operation of the…

DRIVE·Jun 27·1 min read

H02J3/01 TOSHIBA MITSUBISHI-ELECTRIC INDUSTRIAL SYSTEMS CORPORATION

CIRCUIT AND METHOD FOR AN ELECTRICAL FILTER

An electrical filter circuit (300) is disclosed. The circuit (300) includes a first input line (301) and a second input line (302). A first transmission line (313), (413), (513), (613) is coupled elec…

DRIVE·Jun 26·2 min read

H02J3/01 GE AVIATION SYSTEMS LLC [US]

RIPPLE CONTROL METHOD FOR MODULAR CASCADED POWER CONVERSION DEVICE

A ripple control method for a modular cascaded power conversion device is provided. The method obtains, according to a grid voltage vector of three-phase AC power, a second-order fluctuating voltage s…

DRIVE·Mar 7·1 min read

H02J3/01 SANTAK ELECTRONIC (SHENZHEN) CO., LTD.

STABILIZING DC LINK VOLTAGE WITH ADAPTIVE GAIN

A method for stabilizing a DC link voltage of an electrical converter (12), the method comprising: determining a DC link voltage signal (30) for the DC link voltage of the electrical converter (12); d…

DRIVE·Feb 7·1 min read

H02J3/01 ABB SCHWEIZ AG [CH]

Active Harmonics Cancellation

Systems and methods are described for active harmonics cancellation. A wireless charging apparatus includes a wireless-power transfer circuit comprising a wireless-power transfer coil configured to ge…

DRIVE·Nov 9·1 min read

H02J3/01 WiTricity Corporation

POWER CONTROL SYSTEM AND DEVICE

[Problem to be solved] To achieve adjustment of an electric line based on indexes set separately for harmonic components having different orders in a current in the electric line. [Solution] A power c…

DRIVE·Oct 12·1 min read

H02J3/01 DAIKIN INDUSTRIES, LTD.

POWER CONVERSION DEVICE

A power conversion device includes a power conversion circuit and a power conversion control circuit. The power conversion control circuit is configured to calculate a positive-phase sequence current …

DRIVE·Sep 6·2 min read

H02J3/01 TOSHIBA MITSUBISHI ELECTRIC INDUSTRIAL SYSTEMS CORP [JP]

ELECTRICAL POWER SYSTEM HAVING ACTIVE HARMONIC FILTER

A method of mitigating high frequency harmonics in an output current of an electrical power system connected to a power grid includes providing an active harmonic filter in a stator power path connect…

DRIVE·Jun 15·1 min read

H02J3/01 General Electric Renovables Espana, S.L.

POWER SUPPLY CIRCUIT, COMPENSATION CIRCUIT AND HARMONIC DISTORTION COMPENSATION METHOD THEREOF

A power supply circuit, a compensation circuit and a harmonic distortion compensation method thereof are disclosed. The power supply circuit includes a rectifier and filter module, a main power stage …

DRIVE·Mar 30·2 min read

H02J3/01 SHANGHAI BRIGHT POWER SEMICONDUCTOR CO., LTD.

SWITCHING VALVE

There is provided a switching valve for a voltage source converter, the switching valve including a number of modules, each module including at least one switching element and at least one energy stor…

DRIVE·Mar 2·1 min read

H02J3/01 General Electric Technology GmbH

HYBRID PASSIVE POWER FILTER AND THREE-PHASE POWER SYSTEM

Provided are hybrid passive power filter and a three-phase power system. The hybrid passive power filter includes: a series passive harmonic isolation unit, a parallel passive filtering unit, and a ha…

DRIVE·Feb 16·1 min read

H02J3/01 QINGYUAN POWER SUPPY BUREAU OF GUANGDONG POWER GRID CORPORATION

SYSTEMS AND METHODS FOR PARALLELING 3-WIRE AND 4-WIRE 3-PHASE ACTIVE HARMONIC FILTERS

DRIVE·Nov 10·2 min read

H02J3/01 SCHNEIDER ELECTRIC USA, INC.

METHODS, SYSTEMS, AND MEDIA FOR PRESENTING MEDIA CONTENT IN RESPONSE TO A CHANNEL CHANGE REQUEST

Methods, systems, and media for presenting media content in response to a channel change request are provided. In some implementations, methods for presenting media content in response to a channel ch…

DRIVE·Aug 4·2 min read

H02J3/01 Google LLC

ACTIVE FILTER DEVICE AND AIR CONDITIONER

An active filter device includes a power module configured to generate a compensating current to suppress a harmonic current generated from a load device and a controller configured to control the pow…

DRIVE·Mar 31·1 min read

H02J3/01 Mitsubishi Electric Corporation

HYBRID CASCADED APF TOPOLOGY AND CONTROL METHOD THEREFOR

A hybrid cascaded APF topology and control method therefor for improving the ability of a system to compensate for higher harmonics, raise the quality of electric energy of output currents, and reduce…

DRIVE·Dec 16·2 min read

H02J3/01 SHANDONG UNIVERSITY

CONTROL OF A WIND TURBINE POWER GENERATION SYSTEM FOR OPTIMISING DC LINK VOLTAGE

This invention relates to a method of controlling at least one wind turbine of a plurality of wind turbines connected to an electrical grid at a predefined point in the electrical grid. The wind turbi…

DRIVE·Nov 11·2 min read

H02J3/01 VESTAS WIND SYSTEMS A/S

ACTIVELY-CONTROLLED POWER TRANSFORMER AND METHOD FOR CONTROLLING

A transformer includes a magnetic core having multiple limbs. The transformer also includes a direct current (DC) bias winding wound around a specified one of the limbs. The transformer further includ…

DRIVE·Nov 11·1 min read

H02J3/01 Raytheon Company

HIGH-FREQUENCY CURRENT COMPENSATOR AND AIR-CONDITIONING SYSTEM

A harmonic current compensating device according to an embodiment of the present disclosure is a harmonic current compensating device including a power converter including at least a pair of arms each…

DRIVE·Jul 1·1 min read

H02J3/01 Mitsubishi Electric Corporation

ACTIVE FILTER FOR RESONANCE REDUCTION

A control unit for an active filter for reducing resonance in an electric system is provided. The electric system comprises a power source distributing an alternating current to an AC conductor connec…

DRIVE·May 27·1 min read

H02J3/01 COMSYS AB

METHOD TO REDUCE HARMONICS IN THE ELECTRICAL OUTPUT OF A POWER PLANT

A method to reduce harmonics in the electrical output (i.e. voltage and current) of a power plant is provided. The power plant is connected via a point of common coupling with an electrical grid. Conv…

DRIVE·Apr 22·2 min read

H02J3/01 Siemens Gamesa Renewable Energy A/S