Title :
An optimization method for three-level selective harmonic eliminated pulse width modulation (SHEPWM)
Author :
Wu, Chunhui ; Jiang, Qirong ; Zhang, Chunpeng
Author_Institution :
Dept. of Electr. Eng., Tsinghua Univ., Beijing
Abstract :
This paper presents an optimization method and corresponding algorithm for three-level selective harmonic eliminated pulse width modulation (SHEPWM) strategy to improve harmonic performance of inverter´s output voltage. Based on a three-level three-single-phase distribution static synchronous compensator (D-STATCOM), the principle of SHEPWM is introduced in the paper. Then, the conventional SHEPWM is divided into two different strategies, and two different sets of initial values are adopted for calculating switching angles. Furthermore, an optimization method is proposed, which brings better harmonic performance of inverter´s output voltage with low switching frequency. Computational examples and experimental results both show that this optimization method has well convergence and good effect
Keywords :
PWM invertors; harmonics suppression; optimisation; power conversion harmonics; static VAr compensators; switching convertors; harmonic performance; inverter; optimization method; selective harmonic eliminated pulse width modulation; single-phase distribution static synchronous compensator; switching angles; switching frequency; Automatic voltage control; Convergence; Low voltage; Optimization methods; Pulse inverters; Pulse width modulation; Pulse width modulation inverters; Space technology; Space vector pulse width modulation; Switching frequency; Selective harmonic eliminated pulse width modulation (SHEPWM); optimization; three-level inverter;
Conference_Titel :
Electrical Machines and Systems, 2005. ICEMS 2005. Proceedings of the Eighth International Conference on
Conference_Location :
Nanjing
Print_ISBN :
7-5062-7407-8
DOI :
10.1109/ICEMS.2005.202767
