INTERRUPTION SYSTEM FOR POWER CONVERTER

PROBLEM TO BE SOLVED: To perform cost reduction and labor saving of maintenance, and to prevent overcharge of a smoothing capacitor as well, by providing a DC circuit-breaker between a DC power supplying point and a DC reactor, and providing a semiconductor circuit-breaker between DC reactor and the...

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Bibliographische Detailangaben
1. Verfasser:	HORIE SATORU
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 CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TOTRANSPORTATION CONTROL OR REGULATION THEREOF CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUTPOWER CONVERSION OR DISTRIBUTION OF ELECTRIC POWER ELECTRIC EQUIPMENT OR PROPULSION OF ELECTRICALLY-PROPELLEDVEHICLES ELECTRICITY ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES, IN GENERAL GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS GENERATION MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES PERFORMING OPERATIONS TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINSTCLIMATE CHANGE TRANSPORTING VEHICLES IN GENERAL
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Beschreibung
Zusammenfassung:	PROBLEM TO BE SOLVED: To perform cost reduction and labor saving of maintenance, and to prevent overcharge of a smoothing capacitor as well, by providing a DC circuit-breaker between a DC power supplying point and a DC reactor, and providing a semiconductor circuit-breaker between DC reactor and the positive terminal of the smoothing capacitor. SOLUTION: Between a DC power source 1 and an inverter 5 which receives DC power from the DC power source 1 and performs DC-AC conversion, an electric circuit composed of a DC circuit-breaker 2 which interrupts a current mechanically, a DC reactor 3, a semiconductor circuit-breaker 10, and a smoothing capacitor 4 connected in the order is interposed. Here, the semiconductor circuit-breaker 10 is used for suppressing an inrush current on the occasion of charging the smoothing capacitor 4 by the DC power source 1, and it interrupts a direct current flowing in the DC reactor 3. Consequently, it becomes possible to perform cost reduction and labor saving of maintenance. Besides, it becomes possible to prevent overcharge of the smoothing capacitor caused by the energy of the DC reactor generated by a transient phenomenon.