#H02J3/1814

IMPROVEMENTS IN OR RELATING TO GRID-CONNECTED POWER CONVERTERS

In the field of high voltage direct current (HVDC) power transmission networks there is a need for an improved power converter.A power converter (10), for use in a HVDC power transmission network, com…

DRIVE·Nov 5·2 min read

H02J3/1814 GENERAL ELECTRIC TECHNOLOGY GMBH [CH]

CONVERTER ARRANGEMENT AND METHOD OF OPERATION FOR SAID CONVERTER ARRANGEMENT

A device controls a power flow in an AC network and has a series converter with a DC side to connect to a DC link and an AC side to connect to the AC network via a series transformer. The device furth…

DRIVE·Aug 3·1 min read

H02J3/1814 Siemens Energy Global GmbH & Co. KG

Temporal Balancing of Electrical Stress on FACTS Devices in FACTS Based Distributed Impedance Injection Units

An impedance injection unit (IIU) system is coupled to a high-voltage (HV) transmission line. The IIUs are activated in sequences of activation in successive time periods. This injects an impedance wa…

DRIVE·Mar 3·1 min read

H02J3/1814 Smart Wires Inc.

REACTIVE POWER AND VOLTAGE CONTROL METHOD

A reactive power-voltage control method for integrated transmission and distribution networks is provided. The reactive power-voltage control method includes: establishing a reactive power-voltage con…

DRIVE·Dec 16·1 min read

H02J3/1814 TSINGHUA UNIVERSITY

A CONTROL METHOD AND SYSTEM FOR ASSISTING ACTIVE POWER FACTOR CORRECTION LOADS

The present invention relates to a control method for supporting active power factor correction (APFC) loads, comprising: providing square wave width of an output voltage waveform to be a comparativel…

DRIVE·Jul 23·2 min read

H02J3/1814 LIAN ZHENG ELECTRONIC SHENZHEN CO LTD [CN]

Power conversion system and method

A power conversion system (50) includes a power transformer (62) for receiving AC power at a first voltage from an input side (52) and for delivering AC power at a second voltage to an output side (56…

DRIVE·Mar 6·2 min read

H02J3/1814 GEN ELECTRIC [US]

Apparatus for controlling the power used in required operating conditions that vary over time, particularly for supplying power to lighting systems

An apparatus for controlling the power used in required operating conditions that vary over time, particularly for supplying power to lighting systems, using solid-state technology and comprising an i…

DRIVE·Nov 2·1 min read

H02J3/1814 CONCHIGLIA SPA [IT]

Device for maintaining the voltage of an electric AC grid and method of operating the device

A partial converter system (2) includes a branch pair (3) comprising two series-connected driven power semiconductor switches with each having a diode reverse-connected in parallel. The branch pair is…

DRIVE·Mar 17·1 min read

H02J3/1814 ABB SCHWEIZ AG [CH]

Conditioner for electric network

The electrical network conditioner includes a transformation circuit, with voltage converters, which takes an input in parallel from a distribution line. The circuit generates a compensating voltage w…

DRIVE·Dec 17·2 min read

H02J3/1814 MGE UPS SYSTEMS S A [FR]

Method for operating a charge device for a voltage drop compensation device and device for carrying out the method

The charging voltages (U(LA),U(LB),U(LC)) are generated in response to a drive signal, such that the charging currents (I(LA),I(LB),I(LC)) injected in the corresponding phases (A,B,C) is proportional …

DRIVE·Feb 19·1 min read

H02J3/1814 ABB SCHWEIZ AG [CH]

Voltage control

A dynamic voltage restorer circuit 14 comprises capacitive storage means 16, switch means 18 and control means 20. The switch means 18 includes an array of anti-parallel diodes 34 and switchable uni-d…

DRIVE·Jan 29·1 min read

H02J3/1814 ROLLS ROYCE POWER ENG [GB]

Operating method and system for voltage drop compensation

The method involves driving an inverter (4) with control signals formed from a reference feed voltage (Uein, ref) to produces a feed voltage for one of the phases (R,S,T) of an a.c. network. The sum o…

DRIVE·Oct 16·1 min read

H02J3/1814 ABB RESEARCH LTD [CH]

Device for uninterruptible power supply and for active filtering

The device has loads connected to an a.c. sub-network connected to a supply via a switch and a primary winding of a coupling transformer. The a.c. side of a first current converter is connected betwee…

DRIVE·Sep 25·2 min read

H02J3/1814 ABB RESEARCH LTD [CH]