Title :
Dead-time compensation method of SVPWM based on DSP
Author_Institution :
Sch. of Electr.&Electron. Inf. Eng., Huangshi Inst. of Technol., Huangshi, China
Abstract :
In direct torque control and vector control, the voltage source inverter (VSI) was controlled based on Space-vector pulse width modulation (SVPWM). The SVPWM is an excellent control strategy, but the relation between reference voltage and actual output voltage is nonlinear due to the dead time effect and the voltage drop of power devices. The distortion of voltage invokes serious problems such as current waveform distortion and deterioration of the systems. An improved method which reduces the distortion of voltage and current in induction motor control system is presented. The method can be implemented with software without any extra hardware. The experiment results verify this method has a good compensation effect.
Keywords :
PWM invertors; compensation; digital signal processing chips; induction motors; machine vector control; torque control; DSP; SVPWM; dead-time compensation method; direct torque control; induction motor control system; power devices; space-vector pulse width modulation; vector control; voltage source inverter; Control systems; Digital signal processing; Induction motors; Machine vector control; Nonlinear distortion; Pulse inverters; Pulse width modulation inverters; Space vector pulse width modulation; Torque control; Voltage control; SVPWM; dead time compensation; pulse width modulation;
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.2009.5138620
