A Comparison of New Sepic Voltage-Doubler Converter for Both BLDC and DC Motor Drives

P. Dhanasekaran, S. Shanmugam .

Abstract


In this paper, Single-Ended Primary Inductor Converter (SEPIC) fed DC motor is proposed.Soft-switching technique such as Zero-Voltage-Switching (ZVS) and Zero-Current-Switching (ZCS) operation plays a vital role in high voltage applications. Zero-Current-Switching (ZCS) operation achieved due to resonance between the resonant inductor and the capacitor by using output diode and its reverse-recovery loss is reduced. Zero-Voltage-Switching (ZVS) operation is achieved by using coupled inductor and auxiliary inductor. The model has been simulated through MATLAB/SIMULINK using Diode Bridge, SEPIC topology and closed loop BLDC and DC motor load. The prototype is modeled with input side Diode Bridge Rectifier, SEPIC Topology and Microcontroller ATMEL 89S52. The soft switching scheme for the proposed topology is developed with closed loop motor load. The converter achieves high efficiency due to soft-switching and output voltage is achieved twice the input voltage.The presented analysis is verified by a prototype of 33 kHz and 55W converter.Also, the comparative results of simulated and prototype are generated and are shown.

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References


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