Title :
Effects of flux and torque hysteresis band amplitude in direct torque control of induction machines
Author :
Casadei, D. ; Grandi, G. ; Serra, G. ; Tani, A.
Author_Institution :
Istituto di Elettrotecnica, Bologna Univ., Italy
Abstract :
Direct torque control of induction machines allows high dynamic performance to be obtained utilising a simple signal processing method. Furthermore, this control technique does not require current regulators so reducing the hardware requirements. In this paper, the influence of the amplitude of flux and torque hysteresis bands on switching frequency, torque and flux ripple, current distortion and drive losses is investigated. The advantages of a careful choice of hysteresis band amplitudes are emphasised. The numerical results are verified by experimental tests carried out on a DSP based processing system
Keywords :
asynchronous machines; control system analysis; control system synthesis; digital signal processing chips; direct digital control; machine control; machine testing; machine theory; power engineering computing; torque control; DSP; current distortion; direct torque control; drive losses; dynamic performance; experiment; flux hysteresis band amplitude; flux ripple; induction machines; signal processing; switching frequency; torque; torque hysteresis band amplitude; Digital signal processing; Drives; Hardware; Hysteresis; Induction machines; Regulators; Signal processing; Switching frequency; System testing; Torque control;
Conference_Titel :
Industrial Electronics, Control and Instrumentation, 1994. IECON '94., 20th International Conference on
Conference_Location :
Bologna
Print_ISBN :
0-7803-1328-3
DOI :
10.1109/IECON.1994.397792
