公开(公告)号：US20150131345A1

公开(公告)日：2015-05-14

申请号：US14540647

申请日：2014-11-13

Applicant: ABB OY

Inventor： Mikko PURHONEN ,  Tero VIITANEN

IPC: H02M7/44

CPC classification number: H02M7/44 ,  H02J3/385 ,  H02M5/4505 ,  H02M7/493 ,  Y02E10/58

Abstract: The present disclosure discloses a method and an apparatus implementing the method for minimising a circulating current of parallel-connected inverters. The method can include, for at least one parallel-connected inverter, measuring a common-mode voltage of the inverter, and controlling a cycle length of the switching cycle on the basis of the common-mode voltage.

Abstract translation: 本公开公开了一种实现用于使并联逆变器的循环电流最小化的方法和装置。 对于至少一个并联连接的逆变器，该方法可以包括测量逆变器的共模电压，并且基于共模电压来控制开关周期的周期长度。