According to the present invention, the present invention relates to a parallel operation system for minimizing a filter which can reduce the volume and costs of a power converter by reducing the number of filters filtering output to one even though the number of power converters of a pulse width modulation (PWM) control method, which perform a parallel operation in an interleaved method by using a DC-DC converter, increases to two or more, and can perform, even if a defect occurs in some DC-DC converters of a railroad car power system, a railroad car operation with the remaining DC-DC converters in which a defect does not occur. The parallel operation system for minimizing a filter comprises a first DC-DC converter unit, a second DC-DC converter unit and one common filter.
본 발명의 필터를 최소화하는 병렬 운전 시스템에 따르면, DC-DC 컨버터를 이용하여 인터리브드 방식으로 병렬 운전을 하는 PWM 제어방식의 전력변환기의 개수가 2개 이상으로 증가하더라도, 출력을 필터링 하는 필터의 개수를 1대로 줄일 수 있도록 하여 전력변환기의 부피 및 단가를 줄일 수 있으며, 철도 차량 전력 계통의 DC-DC 컨버터 제품 중 일부 제품에 고장이 발생하여도, 고장이 발생하지 않은 나머지 DC-DC 컨버터로 철도 차량 운행이 가능할 수 있도록 하는 효과가 있다.
Parallel Operation System for Minimizing Filter
필터를 최소화하는 병렬 운전 시스템
06.03.2019
Patent
Elektronische Ressource
Koreanisch
IPC: | H02M APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS , Anlagen zur Umformung von Wechselstrom in Wechselstrom, von Wechselstrom in Gleichstrom oder umgekehrt, oder von Gleichstrom in Gleichstrom und zur Verwendung in Netzen oder ähnlichen Stromversorgungssystemen / B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen |
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