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International Journal of Advanced Engineering Application

ISSN: 3048-6807

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Development and Optimization of a High-Current ZVS-PWM Converter for Industrial Application

Author(s):John M. Mbaga1, Grace N. Mwakalonge2, Emmanuel K. Moshi3

Affiliation: 1,2,3 University of Dar es Salaam, Dar es Salaam, Tanzania

Page No: 34-43

Volume issue & Publishing Year: volume 1 Issue 8, Dec-2024

Journal: International Journal of Advanced Engineering Application (IJAEA)

ISSN NO: 3048-6807

DOI:

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Abstract:
This paper introduces a novel auxiliary circuit designed for implementation in both DC-DC and AC-DC Zero Voltage Switching Pulse Width Modulation (ZVS-PWM) converters. The proposed auxiliary circuit enhances the performance of ZVS-PWM converters in applications requiring high-frequency operation and the capability to handle higher load currents than conventional ZVS-PWM converters.
The operation of the new ZVS-PWM converter is thoroughly described, providing insights into its working principles and the role of the auxiliary circuit in achieving ZVS across a wide range of operating conditions. A comprehensive steady-state analysis is performed to understand the circuit behavior, including voltage and current characteristics, switching loss reduction, and efficiency improvements.
Additionally, a systematic design procedure is developed to guide the implementation of the proposed converter. The design methodology is demonstrated through a detailed example, highlighting key considerations such as component selection, circuit optimization, and thermal management. To validate the proposed design, experimental results from a prototype converter are presented, showcasing its feasibility, efficiency, and performance under real-world operating conditions.
The findings of this research contribute to the advancement of high-performance ZVS-PWM converters, offering a practical solution for applications demanding high efficiency, high frequency, and the ability to handle elevated load currents.

Keywords: DC-DC converter, zero voltage switching, auxiliary circuit, pulse width modulation, high-frequency operation

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