Power conversion device and energy storage equipment

The invention discloses a power conversion device and energy storage equipment. The power conversion device comprises at least one DC-DC converter, a DC-AC converter and a controller, the DC-DC converter is electrically connected with the DC-AC converter; the controller is used for controlling the D...

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Bibliographische Detailangaben
Hauptverfasser:	ZOU JIAN, LUO XIAOLONG, NIE HONGTAO, RUAN JUNLIN, WANG DAQING
Format:	Patent
Sprache:	chi ; eng
Schlagworte:	APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC,OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWERSUPPLY SYSTEMS CONTROL OR REGULATION THEREOF CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUTPOWER CONVERSION OR DISTRIBUTION OF ELECTRIC POWER ELECTRICITY GENERATION
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Beschreibung
Zusammenfassung:	The invention discloses a power conversion device and energy storage equipment. The power conversion device comprises at least one DC-DC converter, a DC-AC converter and a controller, the DC-DC converter is electrically connected with the DC-AC converter; the controller is used for controlling the DC-DC converter and the DC-AC converter; the controller is configured to match the input power of the DC-DC converter by adjusting the output power of the DC-AC converter within a set period of time. According to the technical scheme, the double alternating-current power frequency ripples at the input end of the DC-DC converter are small, the voltage of the output end of the DC-DC converter is allowed to have the double alternating-current power frequency ripples with the large voltage, and therefore the capacity requirements for a DC side capacitor and an intermediate-stage bus capacitor are reduced, the DC side bus and the intermediate-stage bus can use small-capacity capacitors, and the capacity of the DC side bu