公开(公告)号：US5814901A

公开(公告)日：1998-09-29

申请号：US892289

申请日：1997-07-14

申请人： Satoru Ihara

发明人： Satoru Ihara

IPC分类号： H02J3/01 ,  H02J3/24 ,  H02M1/12

CPC分类号： H02M1/12 ,  H02J3/01 ,  Y02E40/40

摘要： Apparatus and method to separate the harmonic problems in the load side circuit of an electrical power distribution system from the source side circuit of a source transformer in a reliable and economical manner. The electrical power distribution system includes at least a source of AC electrical power, a load, and the connection from the source to the load including a source transformer, electrical conductors, wires, or cables. A part of the load is the non-linear load which injects harmonics. A harmonic blocking filter, comprised of an existing source transformer and a series combination of an auxiliary transformer and a capacitor, is connected in parallel with the source transformer. The MVA rating of the auxiliary transformer is chosen to be equal or smaller than the MVA rating of the source transformer, and the leakage impedance of the auxiliary transformer is chosen to be equal or larger than the impedance of the source transformer.

摘要翻译： 以可靠且经济的方式将电力分配系统的负载侧电路中的谐波问题与源极变压器的源极侧电路分离开来的装置和方法。 电力分配系统至少包括交流电力源，负载以及从源极到包括源极变压器，电导体，电线或电缆的负载的连接。 负载的一部分是注入谐波的非线性负载。 与源变压器并联连接的由现有的源极变压器和辅助变压器和电容器的串联组成的谐波阻塞滤波器。 辅助变压器的MVA额定值等于或小于源变压器的MVA额定值，辅助变压器的漏电阻应等于或大于源变压器的阻抗。