Damping of transient oscillations on the output LC filter of PWM inverters by using a virtual resistor
Dahono P.A.a, Bahar Y.R.a, Sato Y.a, Kataoka T.a
a Department of Electrical Engineering, Bandung Institute of Technology, Indonesia
Abstract
This paper presents a method to damp transient oscillations on the output LC filter of PWM inverters by using a virtual resistor. A virtual resistor is an additional control algorithm that simulates the roles of a resistor in the output LC filters. Because no real resistor is used, the oscillations can be damped effectively without sacrificing the power efficiency. The implementation of the virtual resistor is determined by how the resistor is connected to the LC filter. Experimental results are included to verify the proposed method.
Author keywords
Pulse width modulation inverters,Transient oscillations,Virtual resistor