Zeta converter for power factor correction and voltage regulation

This paper proposes a power factor correction using an intermediate zeta converter. Average current mode control technique is used in the closed loop, which will force the input source current to be almost in phase with the supply voltage. Further, this control loop also ensures that tight regulation of load voltage against line and load disturbances. Input current is almost smooth and exhibits low ripple current thus results in lower EMI. To verify the proposed control principle a zeta converter is designed to handle a power 250 W and the total system is simulated in PSIM environment. The power factor obtained through simulation is in compliance with the standards.