Title :
A novel DC voltage balancing scheme of five-level converters based on reference-decomposition SVPWM
Author :
Su, Li ; Ning, Li ; Yue, Wang
Author_Institution :
Dept. of Electr. Eng., Xi´´an Jiaotong Univ., Xi´´an, China
Abstract :
Multilevel diode clamped converters have accepted more and more concentration recently due to its adaptability to high-power and high-voltage applications. The DC capacitor voltage balance problem is very important yet difficult to handle among the problems concerning DCC. In this paper, the DC voltage of a five-level DCC is balanced using an object function optimizing scheme based on a proposed novel and simple DC current model. This paper also proposes a combination of the voltage balancing scheme with reference-decomposition SVM method, thus realize a novel and effective DC voltage balancing scheme. Analytical and Simulation results of a five-level diode-clamped converter are given to validate the feasibility of the proposed scheme.
Keywords :
PWM power convertors; optimisation; power capacitors; power semiconductor diodes; DC capacitor voltage balance problem; five-level DCC; five-level converter; high-power applications; high-voltage applications; multilevel diode clamped converter; object function optimization scheme; reference-decomposition SVPWM; simple DC current model; space vector modulation; Capacitors; Mathematical model; Software; Support vector machines; Switches; Vectors; Voltage control; DC voltage balancing; multilevel; reference-decomposition; space vector modulation(SVM);
Conference_Titel :
Applied Power Electronics Conference and Exposition (APEC), 2012 Twenty-Seventh Annual IEEE
Conference_Location :
Orlando, FL
Print_ISBN :
978-1-4577-1215-9
Electronic_ISBN :
978-1-4577-1214-2
DOI :
10.1109/APEC.2012.6166033