Parallel Voltage Sag Compensator with Reduced Capacitance Using a Boost-Type Power Factor Correction Rectifier

摘要

A new circuit of parallel-type voltage sag compensator is proposed in this paper. The proposed voltage sag compensator can reduce the necessary capacity of the energy storage capacitor for compensation by boost-type power factor correction rectifier charging the capacitor during a voltage sag. As a result the proposed system can reduce the size and maintenance of the apparatus. This paper shows the principle and control system of the proposed circuit. Compensation characteristics were demonstrated by simulation and experiment.