Home > Published Issues > 2015 > Special Issue, January 2015 >

COMPARISON OF N-STAGE CASCADE COCKCROFT-WALTON VOLTAGE MULTIPLIER APPLIED TO TRANSFORMER-LESS DC-DC BOOST CONVERTER

S Priya, M. Mohamed Muzammil, K Jeberdson Abraham and P Selavanathan
Department of EEE, Jeppiaar Institute of Technology, Sri Perumbudur, India.

Abstract—This paper proposes a high step-up DC-DC converter based on Cockcroft-Walton (CW) voltage multiplier without using step up transformer. The low input DC voltage is boost up by boost inductor (Ls) in DC-DC converter. The n-stage CW-voltage multiplier is applying low input AC voltage to high output DC voltage. It provides continuous input current with low ripple, high voltage gain, reduced switching losses, low voltage stress on the switches, diodes and capacitors and also improving efficiency of the converter. Step-up dc-dc converters have been proposed to obtain high voltage ratios without extremely high duty cycle by using isolated transformers or coupled inductors. In order to obtain low input current ripple and high voltage ratio current-fed converters are used. Current-fed converters are more superior to the voltage-fed inverters. Finally the proposed converter is validated by MATLAB simulation for n-number of stages.

Index Terms—Duty ratio, Performance parameters, Boost converter

Cite: S Priya, M.Mohamed Muzammil, K Jeberdson Abraham and P Selavanathan, "COMPARISON OF N-STAGE CASCADE COCKCROFT-WALTON VOLTAGE MULTIPLIER APPLIED TO TRANSFORMER-LESS DC-DC BOOST CONVERTER," International Journal of Electrical and Electronic Engineering & Telecommunications, Vol. 1, No. 1, pp. 349-354, March 2015.