POWER CONVERSION CIRCUIT AND POWER CONVERSION SYSTEM

摘要

A power converter, includes a first terminal and a second terminal which are connected to a direct current; a third terminal connected to an alternating current; N multi-level bridge arms connected in parallel to the first terminal and the second terminal, where the N multi-level bridge arms work in a parallel-interleaved manner, each multi-level bridge arm of the N multi-level bridge arms includes an alternating current node, and multiple time-varying levels are generated at the alternating current node, where the multiple levels are more than two levels; and a coupling inductor, including N windings coupled by one common magnetic core, where one end of each winding of the N windings is connected to an alternating current node of one multi-level bridge arm of the N multi-level bridge arms, and the other end of each winding of the N windings is connected to the third terminal.

主权项

1. A power conversion circuit, comprising:
a first terminal and a second terminal, which are configured to connect to a direct current; a third terminal, configured to connect to an alternating current; N multi-level bridge arms, connected in parallel between the first terminal and the second terminal, and configured to work in a parallel-interleaved manner, wherein the working in a parallel-interleaved manner refers to working in a phase-interleaved manner, and multiple time-varying levels are generated at an alternating current node of each multi-level bridge arm of the N multi-level bridge arms, wherein the multiple levels are more than two levels; and a coupling inductor, comprising N windings coupled by one common magnetic core, and configured to form inductances coupled with each other, wherein one end of each winding of the N windings is connected to an alternating current node of one multi-level bridge arm of the N multi-level bridge arms, and the other end of each winding of the N windings is connected to the third terminal, wherein N is greater than or equal to two.