Title :
Optimal carrier based PWM strategy in overmodulation region of three-level inverter
Author :
Wu, Yongxu ; Wang, Cong ; Guo, Xiaobing ; Gao, Yang ; Cheng, Hong ; Lu, Qiwei
Author_Institution :
Dept. of Electr. Eng., China Univ. of Min. & Technol., Beijing
Abstract :
This paper presents the carrier based pulse-width modulation (PWM) strategy in overmodulation region of three-level inverter. The optimal modulation signal is derived from the end of the three-level space vector undermodulation. As the magnitude of modulation signal increases, the modulation mode varies from the end of undermodulation to overmodulation mode-1, and then to mode-2, the waves of phase command voltages and the relation between modulation factor and shifting angle in overmodulation modes are provided. The modulation technique is verified by simulation of three-level inverter with fan load.
Keywords :
PWM invertors; fan load; modulation factor; overmodulation region; pulse-width modulation; shifting angle; space vector undermodulation; three-level inverter; Amplitude modulation; Phase modulation; Pulse inverters; Pulse width modulation inverters; Signal generators; Space technology; Switches; Virtual colonoscopy; Virtual manufacturing; Voltage; PWM; carrier based; overmodulation; three-level inverter;
Conference_Titel :
Industrial Electronics and Applications, 2009. ICIEA 2009. 4th IEEE Conference on
Conference_Location :
Xi´an
Print_ISBN :
978-1-4244-2799-4
Electronic_ISBN :
978-1-4244-2800-7
DOI :
10.1109/ICIEA.2009.5138425
