Irham Fadlika, Pekik Argo Dahono
This paper presents a new approach to reduce current ripple of PWM inverters by Variable Switching Period (VSP). The analytical expressions for output current ripple of the inverter as a function of the PWM reference signal are derived. The current ripples of the proposed method are then compared to the one using constant switching period. This method provides general expressions to control the current ripple of the inverter without sacrificing the switching losses of the inverter. It is shown that by using this technique, the minimum output current ripple is obtained. Experimental results are included to show the validity of the proposed concept. © 2016 IEEE.
Department of Electrical Engineering, Universitas Negeri Malang, Malang, Indonesia; School of Electrical Engineering and Informatics, Institut Teknologi Bandung, Bandung, Indonesia
