Suppressing dead-time effect in current-controlled three-phase PWM inverters by using virtual inductor
Putri A.I.a, Rizqiawan A.a, Rachmilda T.a, Haroen Y.a, Dahono P.A.a
a School of Electrical Engineering and Informatics, Institute of Technology Bandung, Bandung, Indonesia
Abstract
© 2018 IEEE.This paper proposes a virtual inductor concept to suppress the dead-time effect in current-controlled three-phase PWM inverters. Virtual inductor is an additional control algorithm that mimics the behavior of inductor as if there is a real inductor connected to the circuit. As the inductor is a virtual inductor, we have no problems of cost, size and efficiency. Moreover, the virtual inductor can be designed in such a way so that only the disturbance signals, such as dead-time effect, are affected. Simulated and experimental results are included to show the effectiveness of the proposed virtual inductor in suppressing the dead-time effect.
Author keywords
Additional control,Current controller,Dead time effects,Disturbance signals,PWM inverter,Three phase,Three-phase inverter,Virtual inductor
Indexed keywords
Current controller,Dead-time effect,Three-phase inverter,Virtual inductor
Funding details
The first author thanks to LPDP for doctoral scholarship. This research is funded by Ministry of Research, Technology and Higher Education Indonesia through University Excellence Research 2016 and LPDP.