METHOD AND APPARATUS FOR ELIMINATING HARMONIC COMPONENTS AND OBTAINING A UNIFORM POWER FACTOR IN ALTERNATING CURRENT-DIRECT CURRENT AND DIRECT CURRENT-ALTERNATING CURRENT CONVERTERS
    2.
    发明公开
    METHOD AND APPARATUS FOR ELIMINATING HARMONIC COMPONENTS AND OBTAINING A UNIFORM POWER FACTOR IN ALTERNATING CURRENT-DIRECT CURRENT AND DIRECT CURRENT-ALTERNATING CURRENT CONVERTERS 审中-公开
    在交流电流和直流电流交变电流转换器中消除谐波成分和获得均匀功率因数的方法和设备

    公开(公告)号:EP3197033A1

    公开(公告)日:2017-07-26

    申请号:EP15842605.6

    申请日:2015-09-17

    IPC分类号: H02M1/12 H02M7/68

    摘要: The present patent application relates to a method and equipment for eliminating harmonics based on two complementary techniques, namely the elimination of harmonics by selective harmonic elimination pulse-width modulation in conjunction with the multiple-wiring transformer. The association of these two resources is capable of reducing the harmonic distortion of currents to extremely low values, providing a truly unitary power factor. The technology is suitable for low and medium intensity alternating current - direct current and direct current - alternating current converters, which make interface with the electricity network and should have low harmonic distortion of the current because of the high power value involved, and also because of fragility of the electricity network (low power of short circuit at the coupling point).

    摘要翻译: 本专利申请涉及基于两种互补技术消除谐波的方法和设备,即通过结合多重接线变压器通过选择性谐波消除脉冲宽度调制消除谐波。 这两种资源的关联能够将电流的谐波失真降低至极低值,从而提供真正的单一功率因数。 该技术适用于与电网接口的中低强度交流 - 直流和直流 - 交流转换器,由于涉及的功率值较高,因此应该具有较低的电流谐波失真,并且还因为 电网的脆弱性(耦合点短路功率低)。

    REDRESSEUR ET SYSTEME DE CONTROLE DE LA VITESSE D'UN MOTEUR ELECTRIQUE.
    3.
    发明公开
    REDRESSEUR ET SYSTEME DE CONTROLE DE LA VITESSE D'UN MOTEUR ELECTRIQUE. 审中-公开
    整流器和系统,用于电动机速度控制

    公开(公告)号:EP1779503A2

    公开(公告)日:2007-05-02

    申请号:EP05789950.2

    申请日:2005-07-05

    IPC分类号: H02M7/68

    摘要: The invention concerns a reversible current rectifier, for connection to part of a polyphase network and to a continuous bus (2, 3) comprising a plurality of rectifier cells (200u, 200v, 200w, 300u, 300v, 300w), each rectifier cell including a rectifying device (4) and a one-way electronic switch (5) connected in anti-parallel with the rectifier device, the rectifying devices of different cells being arranged so as to form one rectifier. Each rectifier cell comprises means for controlling (600, 600'; 600'') the electronic switch (5) of the cell arranged to control the latter in closure after detecting a conduction of the rectifying device (4) of the cell so as to enable current to be returned to the network. The control means are arranged to receive a signal (601) external to the cell, for controlling the opening of the electronic switch (5), derived from another rectifier cell.

    SINGLE PHASE OPERATION OF THREE PHASE REGENERATIVE DRIVES

    公开(公告)号:EP3480941A1

    公开(公告)日:2019-05-08

    申请号:EP18203607.9

    申请日:2018-10-31

    发明人: AGIRMAN, Ismail

    摘要: A three-phase regenerative drive configured for operation from a single phase alternating current (AC) power source, the three-phase regenerative drive including a three-phase converter having inputs for connection to a single-phase AC source, the three-phase converter having three phase legs, a three-phase inverter for connection to a motor, the three phase inverter configured to provide three phase command signals to the motor, and a DC bus connected between the three-phase converter and the three-phase inverter. A first phase leg of the three-phase converter and a second phase leg of the three-phase converter are employed to direct current from the single-phase AC source to the DC Bus and a third phase leg of the three phase legs of the three-phase converter returns current to a return of the AC source.