Ripple Steering Interleaved Boost PFC Converter Analysis, Simulation, and Experimentation

Abstract

A zero-voltage-transition (ZVT)-based ripple steering interleaved boost converter is proposed in this paper for power factor correction. The ZVT auxiliary circuit enables soft-switching, reducing the current input ripple and the stress on the main circuit device. The proposed converter achieves better performance in terms of THD and power factor with fewer elements, reducing size and cost. A non-linear current control strategy is employed to suppress harmonics in the supply current. The theoretical study and design are validated through simulations and laboratory tests. Automatic current sharing characteristic is an added advantage when interleaved boost converters are employed. In this work, the devices in the semiconductor power are soft switched and consequently, the losing switches are eliminated, thereby making the across the switchers there is stress voltage which is very less. The results show that the converter achieves ZVT operation, reducing switching losses and improving efficiency. The measured supply current THD is 3.029%, and the switching frequency hardly affects the soft switching performance. The converter proposed reduces the stress on the devices and significantly lowers the switching loss when compared to hard switching. The proposed ZVT-based IBC accomplishes soft switching operation and lessens the number of power devices, improving power factor and efficiency.