Title :
An improved voltage balancing compensator for three-level NPC converters
Author :
Chenchen, Wang ; Can, Zhang ; Xiaojie, You
Author_Institution :
Sch. of Electr. Eng., Beijing Jiaotong Univ., Beijing, China
Abstract :
Neutral-point potential oscillation and balancing problem is an inherent drawback hindering the extensively application of Neutral-Point-Clamped three-level converters. Based on the excellent performances of double signal PWM method contributing to the oscillation elimination, this paper proposes an improved neutral-point voltage balancing compensator. The validity and practicability of the proposed algorithm is verified by simulation and experimental results.
Keywords :
PWM power convertors; oscillations; NPC converter three-level; double signal PWM method; neutral-point potential oscillation elimination; neutral-point voltage balancing compensator; neutral-point-clamped three-level converter; Capacitors; Electric potential; Frequency modulation; Oscillators; Pulse width modulation; Reactive power;
Conference_Titel :
Electrical Machines and Systems (ICEMS), 2011 International Conference on
Conference_Location :
Beijing
Print_ISBN :
978-1-4577-1044-5
DOI :
10.1109/ICEMS.2011.6073864
