Novel remedial control strategies for fault-tolerant pwm inverters

Issue title: Selected Papers from the 14th International Symposium on Applied Electromagnetics and Mechanics (ISEM 2009), Part II

Article type: Research Article

Authors: An, Qun-Tao^{a; *} | Sun, Li^a | Zhao, Ke^a | Sun, Li-Zhi^a

Affiliations: [a] Department of Electrical Engineering, Harbin Institute of Technology, PO Box 350, HIT, Harbin 150001, Heilongjiang Province, P.R. China

Correspondence: [*] Corresponding author. Tel.: +86 451 86412946 616; Fax: +86 451 86412946 611; E-mail: [email protected]

Abstract: The reliability of PWM inverters is direct related to the safety of motor drive systems. Three-phase four-switch inverter (TPFSI) as a fault-tolerant topology is studied and space vector pulse width modulation (SVPWM) for TPFSI is investigated in this paper. The essence of four-switch SVPWM (FS-SVPWM) is revealed. In order to improve the utilization rate of the DC link voltage, a compensatory voltage vector based over-modulation method for FS-SVPWM is proposed. The simulation and experimental results validate the proposed algorithm.

Keywords: Four-switch inverter, fault-tolerant, SVPWM, over-modulation

DOI: 10.3233/JAE-2010-1295

Journal: International Journal of Applied Electromagnetics and Mechanics, vol. 33, no. 3-4, pp. 1635-1642, 2010