公开(公告)号：WO2007072492A1

公开(公告)日：2007-06-28

申请号：PCT/IN2006/000073

申请日：2006-03-02

Applicant: CROMPTON GREAVES LIMITED ,  VENKATESH, Raghavan

Inventor： VENKATESH, Raghavan

IPC: H03H7/00

CPC classification number: H03H7/09 ,  H02M1/12 ,  H03H7/1766 ,  H03H7/1783 ,  H03H7/1791

Abstract: A dynamic harmonic filter for an AC power system comprising at least one voltage source (V) and at least one load. The harmonic filter comprises a current sensing or voltage injection transformer (T 1 ) connected in series with the voltage source and the load with one end of the primary (P 1 ) of the current sensing or voltage injection transformer connected to the voltage source and the other end of the primary of the current sensing or voltage injection transformer connected to the load. The harmonic filter further comprises a parallel resonant LC circuit (L 1 C 1 ) tuned to the fundamental frequency of the power system. One end of the secondary (S 2 ) of the current injection of the voltage sensing transformer is connected to one junction of the parallel resonant LC circuit and the other end of the secondary of the current injection or voltage sensing transformer is connected to the other junction of the parallel resonant LC circuit through the secondary (S 1 ) of the current sensing or voltage injection transformer.

Abstract translation: 一种用于交流电力系统的动态谐波滤波器，包括至少一个电压源（V）和至少一个负载。 谐波滤波器包括与电压源串联连接的电流感测或电压注入变压器（T 1 SUB），并且负载与初级（P 1 SUB 1）的一端 电流感测或电压注入变压器连接到电压源，另一端连接到负载的电流感测或电压注入变压器的一端。 谐波滤波器还包括调谐到电力系统的基频的并联谐振LC电路（L 1 C 1 C 1）。 电压检测变压器的电流注入的次级（S SUB2 / 2）的一端连接到并联谐振LC电路的一个结和电流注入或电压检测的次级的另一端 变压器通过电流感测或电压注入变压器的次级（S 1> 1）连接到并联谐振LC电路的另一个结。