The present disclosure provides a power supply system method for an AC load (10). The system includes a power supply device (11, 21, 31A, 31B, 41) and a DC/AC converter (12, 22, 32, 42). An AC side of the DC/AC converter is coupled to an AC grid (9) and the AC load through an AC bus (8). The power supply device outputs DC electric energy and is coupled to a DC side of the DC/AC converter through a DC bus (13, 23, 33, 43). The power supply device includes an energy storage circuit (111, 211, 311, 411) and a controller (112, 212, 312, 412). The energy storage circuit includes a first energy storage circuitry (1111, 2111, 3111, 4111) and a second energy storage circuitry (1112, 2112, 3112, 4112). The controller is configured to control a conversion operation of the first energy storage circuitry to output a low-frequency power to the DC bus, and a conversion operation of the second energy storage circuitry to output a high-frequency power to the DC bus.
POWER SUPPLY SYSTEM AND METHOD FOR ALTERNATING CURRENT LOAD
STROMVERSORGUNGSSYSTEM UND VERFAHREN FÜR WECHSELSTROMLAST
SYSTÈME D'ALIMENTATION ÉLECTRIQUE ET PROCÉDÉ DE CHARGE DE COURANT ALTERNATIF
2022-11-09
Patent
Electronic Resource
English
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