HYBRID FIVE-LEVEL INVERTER PHASELEG AND APPLICATION CIRCUITS

HYBRID FIVE-LEVEL INVERTER PHASELEG AND APPLICATION CIRCUITS

A five-level inverter and its application circuit are provided. The five-level inverter is enabled to output multiple levels of voltage by controlling different conduction combinations of first, second, third, fourth, fifth, sixth, seventh, and eighth switch transistors, as well as a clamping capaci...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: Geng, Houlai, Bie, Wei, Wang, Peng, Dai, Shangfang, Shen, Tan, Hu, Bing
Format: Patent
Sprache:eng ; fre ; ger
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:A five-level inverter and its application circuit are provided. The five-level inverter is enabled to output multiple levels of voltage by controlling different conduction combinations of first, second, third, fourth, fifth, sixth, seventh, and eighth switch transistors, as well as a clamping capacitor. Two conduction combinations may be selected for outputting a positive voltage, with currents flowing through the clamping capacitor in opposite directions in the two conduction combinations. Therefore the voltage of the clamping capacitor can be balanced by controlling the two conduction combinations. Similarly, when outputting a negative voltage, the voltage of the clamping capacitor can be balanced by controlling other two conduction combinations. Therefore, a balance of power capacitor voltage can be achieved at full power and full modulation without adding an extra hardware circuit.