Dreiphasiger Einstufiger Wechselstrom-Gleichstrom-Wandler und Steuerungsverfahren und Steuerungsvorrichtung dafür

Details

Veröffentlichungs-Nr.

EP4716085

Anmeldetag

19. Mai 2025

Veröffentlichung

25. März 2026

Rechtsraum

EP

IPC

(南京航空航天大学)

Abstract

The present disclosure provides a three-phase single-stage AC-DC converter and control method and control apparatus therefor, with which conversion efficiency and power density of the AC-DC converter are improved. The converter includes a three-phase matrix switching circuit, a resonant circuit, an isolation circuit and a rectifier circuit. The three-phase matrix switching circuit is connected to a three-phase AC power and includes three independent switch branches. Each of the switch branches includes an upper bridge arm and a lower bridge arm. An intermediate point between the upper bridge arm and the lower bridge arm in each of the switch branches is connected to a phase of AC input. Each bridge arm includes one bidirectional switch component or two switch components connected in series in reverse. The resonant circuit includes a resonant capacitor, a resonant inductor and an excitation inductor which are connected in series between a common endpoint of upper bridge arms of the three switch branches and a common endpoint of lower bridge arms of the three switch branches. A side of the isolation circuit is connected to the resonant circuit and another side thereof is connected to the rectifier circuit. The rectifier circuit includes at least two switch components. An input side of the rectifier circuit is connected to the isolation circuit, and an output side of the rectifier circuit is connected to a load device.

Anmelder

Firma

Vertiv Corporation

Land

🇺🇸 USA