PWM 정류기를 적용한 직류급전시스템의 전압강하 및 비용 평가

초록

Near surface transit system has should be constructed as installation cost of light rail transit with elevated track. So, distance between two substations is longer than conventional system. The long feeding distance results in severe voltagedrop. This paper proposes a PWM rectifier instead of diode rectifier. The PWM rectifier has some advantages. This is able tocontrol output voltage constantly to reduce voltage drop and to use regeneration power without additional inverter. This paperanalyse on improved voltage profile and cost of substation with PWM rectifier. The analysis of voltage profile use PSIM, andthe installation cost of substation with PWM rectifier is compared to substation with diode rectifier.

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