Single‐Phase Non‐Isolated Interleaved DCM Boost Rectifier With High Power Factor and ZVS Based on TAIPEI Rectifier

This paper proposes modifying the Taipei rectifier into a single‐phase version and analysing its advantages as a single‐stage rectifier for single‐phase high‐power electro‐domestic applications. The rectifier utilizes two boost cells operating in discontinuous‐conduction mode, separated by a virtual neutral. Frequency modulation is applied to switch‐on the transistors with zero‐voltage‐switching and maintain a balanced voltage at the output capacitors. The virtual neutral, along with a coupled inductor, allows the use of low‐rating electrolytic capacitors at the DC bus and increases common‐mode noise immunity. The interleaved cells ensure a continuous input current and work as voltage followers without requiring a current control loop. There are no reverse recovery losses, and the body diode of the adjacent cell's switch is utilized as a boost diode, thereby sparing two components and enabling synchronous rectification. The topology operation stages and their features are studied and compared with similar power‐factor‐correction single‐phase rectifiers. Additionally, the equations required to design the power components are introduced and validated in a 3 kW prototype, with a minimum switching frequency of 50 kHz, input and output voltages of 220 and 385 V, respectively. At rated conditions, the topology complies with IEC 61000‐3‐2, achieving a total efficiency of 92.52%.