Auxiliary converter with multiple protections

The invention provides an auxiliary converter with multiple protections. The auxiliary converter comprises a first protection circuit, an inverter circuit, a second protection circuit and a control circuit, wherein the first protection circuit, the inverter circuit and the second protection circuit...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	DING QIAOYA, ZHANG GUICHENG, WU CAISHENG, ZHU JIANBO, YI LEI, LIU FENGDONG, GAO YONGJUN, TANG ZIHUI, JIANG XUEJUN, JI HUIGANG
Format:	Patent
Sprache:	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 provides an auxiliary converter with multiple protections. The auxiliary converter comprises a first protection circuit, an inverter circuit, a second protection circuit and a control circuit, wherein the first protection circuit, the inverter circuit and the second protection circuit are sequentially connected and respectively connected with the control circuit; the first protection circuit comprises a first switch, a first resistor and a second resistor; one ends of the first switch and the first resistor are respectively connected with the input end of direct-current voltage, the other end of the first resistor is connected with one end of the second resistor, the other end of the second resistor and the other end of the first switch are respectively connected with the positive input end of the inverter circuit, and the control end of the first switch is connected with the control circuit. The auxiliary converter has the advantages that the input voltage and output voltage of the inverter circuit are effectively protected and controlled, the input currents of the inverter circuit are controlled, the inverter circuit is effectively prevented from being damaged by large pre-charging currents, the fault rate of the auxiliary converter is lowered greatly, and locomotive maintenance and operation cost is lowered.