DC VOLTAGE SENSOR REDUCTION BASED MODULATION METHOD FOR DC COUPLED CONVERTER

A DC voltage sensor reduction based modulation method for a DC coupled converter. A DC coupled converter (5) comprises three power modules (1, 2, 3). The modulation method specifically comprises: obtaining a voltage modulation wave vr* and a current reference value ig* of the DC coupled converter (5...

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Bibliographische Detailangaben
Hauptverfasser:	ZHOU, Jingsen, WEN, Zhongyi, XIAO, Qiang, HU, Lining, FANG, Hui, XIANG, Hongji, WANG, Cheng, YU, Yanan, LI, Lei, MU, Fan, ZHU, Shengyi, CHEN, Yongtao
Format:	Patent
Sprache:	chi ; eng ; fre
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 CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTINGELECTRIC POWER CONTROL OR REGULATION THEREOF CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUTPOWER CONVERSION OR DISTRIBUTION OF ELECTRIC POWER ELECTRICITY GENERATION SYSTEMS FOR STORING ELECTRIC ENERGY
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Beschreibung
Zusammenfassung:	A DC voltage sensor reduction based modulation method for a DC coupled converter. A DC coupled converter (5) comprises three power modules (1, 2, 3). The modulation method specifically comprises: obtaining a voltage modulation wave vr* and a current reference value ig* of the DC coupled converter (5); dividing the voltage modulation wave vr* and the current reference value ig, and dividing an on-off state of the DC coupled converter (5) according to the division result; and when a DC voltage sensor of an electrolytic capacitor in the intermediate power module (2) is removed, completing DC voltage sensor modulation according to the voltage modulation wave vr and a difference value between the DC voltages on electrolytic capacitors in the other two power modules (1, 3). According to the modulation method, when the DC voltage sensor of the electrolytic capacitor in the intermediate power module (2) is removed, the DC voltages of the modules in the DC coupled converter (5) can still be balanced, and the quality