Independent photovoltaic inverter with high-frequency chain structure

The invention discloses a high-frequency link structure independent photovoltaic inverter, and the inverter is composed of a high-frequency inverter, a high-frequency rectifier, a DC filter and an SPWM inverter, wherein the high-frequency inverter and the high-frequency rectifier form a high-frequen...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	JIANG GENCAI, WANG XIULIN, ZHANG LANHONG
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 high-frequency link structure independent photovoltaic inverter, and the inverter is composed of a high-frequency inverter, a high-frequency rectifier, a DC filter and an SPWM inverter, wherein the high-frequency inverter and the high-frequency rectifier form a high-frequency link. The high-frequency inverter is formed by combining four push-pull inverters of the same structure, the DC input ends of the four push-pull inverters are connected in parallel, the alternating-current output ends of four push-pull inverters are connected in series, the output ends of the high-frequency inverters are connected with the input end of the high-frequency rectifier, and the output end of the high-frequency rectifier is connected with the DC filter; and the DC filter is connected with the SPWM inverter. According to the invention, the independent photovoltaic inverter with the high-frequency chain structure not only has higher power density and conversion efficiency, but also enables the switching