Modulationsverfahren und -Vorrichtung für Kaskadiertes Energiespeichersystem

Details

Veröffentlichungs-Nr.

EP4738637

Anmeldetag

25. Oktober 2023

Veröffentlichung

9. Januar 2025

Rechtsraum

EP

IPC

H02J7/00, H02J3/32

Abstract

The present application provides a modulation method and apparatus for a cascaded energy storage system. The cascaded energy storage system comprises N sub-modules which are connected in cascade, wherein N is greater than or equal to 2. The modulation method comprises: in an odd period, according to a first correspondence, using N carriers to modulate waveform signals output by the N sub-modules; and in an even period, according to a second correspondence, using the N carriers to modulate the waveform signals output by the N sub-modules, wherein in the first correspondence and the second correspondence, the N carriers are in one-to-one correspondence with the N sub-modules, and the first correspondence is different from the second correspondence. The modulation method provided by the present application can solve the problem of SOC imbalance of energy storage batteries of sub-modules in phases of the cascaded energy storage system in a phase-shifted carrier modulation method.

Anmelder

Firma

Contemporary Amperex Technology Co., Limited

Land

🇨🇳 China

Fachgebiete