Magnetic energy recovery switch-based power quality AC-DC converters

Abstract

Summary This paper demonstrates the magnetic energy recovery switch–based power quality converter that provides regulated output direct current voltage along with power quality features. The output direct current voltage is regulated below the input voltage unlike other improved power quality converters. In this paper, design and analysis of magnetic energy recovery switch with respect to the converter is discussed. For us to control the output voltage, the closed‐loop control loop is established that includes voltage controller in the outer loop along with inner current controller loop. This inner loop generates the reference current using template of source voltage that controls the input current to maintain unity power factor operation. The performance of 500 W, 48 V/10 A prototype converter is investigated under dynamic and steady‐state conditions, and simulation results are discussed with different types of loads. Furthermore, its performances in percentage total harmonic distortion in source current with aforesaid loads are evaluated with varying source voltage. Based on study, the proposed converter is suitable for various applications requiring power at high current at reduced output voltage such as battery charging for electric vehicles.

Efficient Single-Stage Bridgeless AC to DC Converter Using Grey Wolf Optimization

“…For power quality improvement, AC to DC converters were proposed on the basis of the magnetic energy recovery switch [17]. The proposed converter topology was used in high-current and low-voltage applications, such as electric vehicle charging.…”