Abstract: A diode bridge with two power switches is employed as a PFC circuit to achieve a high power factor and low line current harmonic distortion. Interleaved Control Scheme (ICS) scheme with PI voltage controller and PI current controller is used to generate three-level PWM on the dc side of diode rectifier. Based on the control scheme, the line current is driven to follow the sinusoidal current command which is in phase with the supply voltage, and the output voltage is found to be balanced. At rated power, the source current THD value is less than 5% when PI as voltage and current controller in the ICS.
Keywords: ICS, THD, HCC, PWM, PI, Power Factor, Total Harmonic Distortion (THD), Dual boost converter, Boost doubler