Electromagnetic interference reduction in boost converter using logistic PWM

Abstract

Switch mode power converters are site of electromagnetic interference (EMI) issues that decrease their performances and deteriorate their electromagnetic environment and stability. Thereby electromagnetic compatibility (EMC) plays an increasingly important role to guarantee a correct functioning of DC/DC power converters and to ensure reliability throughout their lifetime. In this paper, the chaotic pulse width modulation scheme based on logistic map (LPWM) was used to mitigate EMI. In fact the LPWM is a spread spectrum technique that spreads out uniformly the entire energy over the frequency band. In the current work, the LPWM scheme has been benchmarked against the traditional PWM and by means of LTspice simulations it has been shown out the great extent of EMI reduction.