Verfahren zur Steuerung einer Zykloumrichterschaltung, Zykloumrichterschaltung und Isolierter Wandler

Details

Veröffentlichungs-Nr.

EP4738675

Anmeldetag

13. Juni 2025

Veröffentlichung

6. Mai 2026

Rechtsraum

EP

Abstract

The present disclosure discloses a method for controlling a cycloconverter circuit, a cycloconverter circuit, and an isolated converter, belonging to the technical field of power control. The cycloconverter circuit is configured to perform alternating current to alternating current conversion and includes a plurality of switch elements connected in a plurality of current paths. The plurality of switch elements are divided into a plurality of groups of switch elements. Each of the plurality of groups of switch elements includes at least one switch element disposed in each of the plurality of current path. The method according to the present disclosure includes: when the cycloconverter circuit is in a zero-crossing detection stage, controlling a first group of switch elements to be turned on complementarily and a second group of switch elements to switch between an on state and an off state. During a dead time between drive signals for the first group of switch elements, a first target switch element in the second group of switch elements is turned on. Thus, a freewheeling loop is provided for a switch element located in a same-direction current path as a switch element in the first group of switch elements that is turned on after the dead time, releasing a leakage inductance current and reducing a risk of voltage overstress on a switch tube.

Anmelder

Firma

Sigenergy Technology Co., Ltd.

Land

🇨🇳 China