公开(公告)号：US20190067932A1

公开(公告)日：2019-02-28

申请号：US15692451

申请日：2017-08-31

Applicant: Eaton Corporation

Inventor： Huaqiang Li ,  Seth O'Brien ,  Thomas M. Ruchti

IPC: H02H7/08 ,  H02M7/217 ,  H02M1/08 ,  H02H3/20

Abstract: A power conversion circuit having a solid-state circuit breaker integrated therein is disclosed. With a disconnect switch between a utility source and the power conversion apparatus described for meeting UL489, the power conversion circuit includes an input connectable to an AC source, a rectifier circuit connected to the input to convert an AC power input to a DC power, and a DC link coupled to the rectifier circuit to receive the DC power therefrom. The rectifier circuit comprises a plurality of phase legs each including thereon an upper switching unit and a lower switching unit, wherein at least one of the upper and lower switching units on each phase leg comprises a bi-directional switching unit that selectively controls current and withstands voltage in both directions, so as to provide a circuit breaking capability that selectively interrupts current flow through the rectifier circuit, while maintaining original power conversion functionalities.