단상 PWM 컨버터의 역률 및 고조파 보상을 위한 교류전압 검출기가 없는 새로운 제어기

New Controller for Power Factor and Harmonics Compensation of Single-Phase PWM Converter without AC Voltage Sensor

In this paper, A new controller for power factor and harmonics compensation of a single-phase PWM converter is described. The proposed controller requires only the dc voltage sensor and the at current sensor to compensate the power factor and harmonics. Detail simulation model with EMTBC (Electro-Magnetic Transient program for DC transmission) including power circuit and controller was developed to verify the operation of proposed controller. The application feasibility of the proposed controller was verified through experimental works with a prototype. The proposed controller has a simple structure in the point of hardware implementation, and shows excellent performance in normal operation as well as in sudden load change.