Title :
Improved performance of DTC of five-phase induction machines
Author :
Raj, Logan Raj Lourdes Victor ; Jidin, A. ; Zalani, Che Wan Mohd Faizal Che ; Karim, Kasrul Abdul ; Goh, Wee Yen ; Jopri, M.H.
Author_Institution :
Fac. of Electr. Eng., Univ. Teknikal Malaysia Melaka (UTeM), Durian Tunggal, Malaysia
Abstract :
The paper describes about optimal voltage vector selection for high-performance of Direct Torque Control (DTC) of five-phase induction machine. The decoupled control of stator flux and electromagnetic torque based on hysteresis controllers as employed in conventional DTC is applied to retain the simplicity and to provide quick instantaneous control. A look-up table that selects the most optimal voltage vectors according to the speed operations, i.e. low-speed, middle-speed and high-speed is proposed to improve DTC performances such as excellent torque dynamic control, minimization of torque ripple, high-efficiency (due to lower switching frequency) and extension of constant torque region. All the improvements are validated through simulation results.
Keywords :
asynchronous machines; hysteresis; machine vector control; magnetic flux; stators; torque control; DTC performance; decoupled control; direct torque control; electromagnetic torque; five-phase induction machine; hysteresis controller; instantaneous control; look-up table; optimal voltage vector selection; stator flux; torque dynamic control; torque ripple minimization; Induction machines; Stators; Switches; Table lookup; Torque; Vectors; Voltage control;
Conference_Titel :
Power Engineering and Optimization Conference (PEOCO), 2013 IEEE 7th International
Conference_Location :
Langkawi
Print_ISBN :
978-1-4673-5072-3
DOI :
10.1109/PEOCO.2013.6564621