Title :
A novel method for dead-time compensation based on SVPWM
Author :
Hu, Qingbo ; Hu, Haibing ; Lu, Zhengyu ; Yao, Wenxi
Author_Institution :
Nat. Key Lab. of Power Electron., Zhejiang Univ., Hangzhou, China
Abstract :
As for a vector control system of permanent magnet synchronous motor, this paper analyzes the influence of dead-time on output voltage in detail, and discusses the relationship between the position of voltage vector and the direction of three-phase current in a space-vector figure. In addition, a method that divides three-phase current into six sectors and a control strategy that compensates only one phase voltage in every sector are proposed in the paper. At last, experiments which are uncompensated and compensated in different frequency are carrier out with a TMS320F240 chip, and the results verify this method has a good compensation effect.
Keywords :
PWM invertors; compensation; control engineering computing; digital signal processing chips; machine vector control; permanent magnet motors; power engineering computing; synchronous motors; voltage control; SVPWM; TMS320F240 chip; dead-time compensation; permanent magnet synchronous motor; three-phase current; vector control system; Bandwidth; Circuits; Current measurement; Hardware; Magnetic analysis; Permanent magnet motors; Power electronics; Pulse width modulation inverters; Space vector pulse width modulation; Voltage control;
Conference_Titel :
Applied Power Electronics Conference and Exposition, 2005. APEC 2005. Twentieth Annual IEEE
Print_ISBN :
0-7803-8975-1
DOI :
10.1109/APEC.2005.1453305
