An AC-DC Interleaved ZCS-PWM Boost Converter With Reduced Auxiliary Switch RMS Current Stress

Abstract

The paper proposes a novel interleaved AC-DC ZCS-PWM boost converter that requires the use of just a single active auxiliary switch to assist in the turning off the main power circuit switches with ZCS. The auxiliary switch can be turned on and off with ZCS and its auxiliary circuit allows the converter to operate without an increase in the main switch peak current or voltage stress. The auxiliary switch in the converter is active for a much shorter time than in most other ZCS-PWM converter, which allows the converter to operate at higher power levels than other previously proposed interleaved ZCS-PWM converter with a single auxiliary switch. The proposed converter's operation is explained in the paper and its key features and design considerations are discussed. Experimental results that confirm the operation of the proposed converter are presented as well. INDEX TERMSSwitch mode power supplies, AC-DC conversion, soft-switching, ZCS-PWM converter RAMTIN RASOULINEZHAD (Student Member, IEEE) received two M.Sc. degrees from Iran and

Circulating Current Control in Interleaved and Parallel Connected Power Converters

“…In electric vehicle systems, these converters are used in an interleaved scheme to increase the output power capacity of a single battery pack [33]. Similarly, the converters are used in an interleaved scheme in server power supplies to efficiently distribute power to the system's components [34]. Apart from this, interleaved converters are also beneficial in LED lighting systems.…”

Optimal Design Analysis with Simulation and Experimental Performance Investigation of High-Power Density Telecom PFC Converters

“…As given in (26) the boost diode has big influence on the system's performance due to the reverse recovery behavior. So, the Ultra-fast diode with very low reverse recovery time (t rr ) and reverse recovery charge (Q rr ) is necessary to reduce the switching loss.…”

“…The control circuits of the PFC circuits which implemented based on the boost converter technique usually contains two control loops [23][24][25]: the outer voltage loop, which regulate the output voltage value as the specified load value, and the inner current loop to make the AC supply current follow the AC supply voltage and regulate the circuit PF to higher values. Usually, these control loops in analogy control circuits are implemented using proportional-integral (PI) controllers [26][27][28]. The parameters of the PI controllers implemented to work with the boost converters are usually optimized by deriving the converter operation equations and linearized the system with using the different the closed loop control loops.…”

PFC Single-Phase AC/DC Boost Converters: Bridge, Semi-Bridgeless, and Bridgeless Topologies

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