Design and implementation of switched capacitor-based high gain converter

ABSTRACT

This paper suggests a high gain Active Switched Capacitor, Switched Inductor, and Voltage Multiplier (ASC-SI-VM) based transformerless DC-DC boost converter to improve the static voltage gain, decrease the voltage stress and current stress of semiconductor devices and accomplish maximum efficiency. The switched inductor cell ensures a continuous source current, and the multiplier cell boosts the output voltage. The voltage conversion ratio analysis, stress expressions and power loss analysis of all the devices are derived. Comparisons are made between the proposed ASC-SI-VM converter topology and existing topologies in terms of static gain, voltage and current stress, and component count. The efficiency of 94.01% is attained for a 20 V/200 V voltage rating and a rated power of 100 W. The experimental topology of the proposed ASC-SI-VM converter is created to confirm the simulated and theoretical values.

KEYWORDS:

• Active switched capacitor
• switched inductor
• power converter
• voltage multiplier cell

Disclosure statement

No potential conflict of interest was reported by the author(s).