Actual Circuit Verification of LC Series Resonant Converter with Power Factor Control for Effective Power in Load regulation

Resonant converters are poor stability about load reguration. New control methods have been proposed to stabilize resonant converters versus load variations. This paper describes the LC series resonant converter using a power factor control with stable control characteristic for load regulation. The proposed control adjusts the power factor that determined by primary current and voltage. Previous research proposed phase shift control method for power factor. This method controls the power factor by using the voltage across the resonant capacitor. The problem with this method is that it assumes the resonant capacitor voltage is sinusoidal when controlling the power factor. Therefore, power factor control becomes more difficult when the waveform is distorted. This research proposed a new power factor control method to address this problem in simulations. Hence, this paper shows that the proposed method has stable control characteristic versus load regulation even in actual circuits.