Operating Method of 3 Phase Voltage type PWM Converter for Unbalanced Voltage with Leakage Transformer

누설변압기가 부착된 전원 불평형 3상 전압형 PWM 컨버터 운전법

In this paper, the control algorithm of DC source device for inverter starting is proposed and the control method for compensating unbalance system source on operating time in the voltage type PWM converter with driving and regenerative faculty is suggested. The maintaining way of balancing condition for converter of AC source is used the compensating unbalanced status by current control loop. Because it is possible that the unbalanced System control is used to leakage transformer not equaled reactance by each phase in rectifier system, the proposed H/W and control algorithm of rectifier system is contributed to minimize of device and rising efficiency.