Title :
Dead time compensation in a vector-controlled induction machine
Author :
Kim, S.H. ; Park, T.S. ; Yoo, J.Y. ; Park, G.T. ; Kim, N.J.
Author_Institution :
Dept. of Electr. Eng., Korea Univ., Seoul, South Korea
Abstract :
Dead time, which is inserted in PWM signals of VSIs, distorts the inverter output voltage waveforms and deteriorates the control performance of an induction machine by producing torque ripples. In this paper, a dead time compensation method in a vector controlled induction machine is proposed. The method is based on a feedforward approach that compensates the dead time effect by adding the compensating voltages to the inverter output voltage references in a two-phase stationary frame. The proposed method is only software intensive and easy to realize without additional hardware. Experimental results show the validity and effectiveness of the proposed method
Keywords :
DC-AC power convertors; PWM invertors; asynchronous machines; compensation; control system synthesis; feedforward; machine control; machine testing; machine theory; PWM VSI; control design; control performance; dead time compensation; feedforward approach; induction machine; inverter output voltage; output voltage waveform distortion; two-phase stationary frame; Delay effects; Frequency; Hardware; Induction machines; Pulse inverters; Pulse width modulation; Pulse width modulation inverters; Switching circuits; Torque control; Voltage control;
Conference_Titel :
Power Electronics Specialists Conference, 1998. PESC 98 Record. 29th Annual IEEE
Conference_Location :
Fukuoka
Print_ISBN :
0-7803-4489-8
DOI :
10.1109/PESC.1998.703127
