Title :
DSP based torque and speed controls of the permanent magnet hysteresis synchronous motor
Author :
Qin, Ruifeng ; Rahman, M.A.
Author_Institution :
Marathon Electr. Corp., Wansau, WI, USA
Abstract :
This paper presents the detailed derivation of the permanent magnet hysteresis synchronous motor (PMHS) torque equation and the design of the digital speed controller for the DSP based PMHS motor vector control system. The torque control that regulates the speed of the PMHS motor, is provided by a quadrature axis current command developed by the speed controller. The digital speed controller design is carried out by the symmetry optimum condition based on the speed loop transfer function. Experimental results of the PMHS control using DS1102 DSP board are presented. The speed of the PMHS motor is successfully controlled from 1 Hz to 60 Hz for the first time. Experimental results show that the hybrid PMHS motor exhibits improved speed stability especially in very low speed range
Keywords :
control system synthesis; digital control; digital signal processing chips; hysteresis motors; machine control; machine testing; machine theory; permanent magnet motors; power engineering computing; torque control; transfer functions; velocity control; 1 to 60 Hz; DSP-based speed control; DSP-based torque control; control design; control performance; digital speed controller; experimental results; low speed range; permanent magnet hysteresis synchronous motor; quadrature axis current command; speed loop transfer function; speed stability improvement; symmetry optimum condition; torque equation; vector control system; Control systems; Digital control; Digital signal processing; Equations; Hysteresis motors; Permanent magnet motors; Permanent magnets; Synchronous motors; Torque control; Velocity control;
Conference_Titel :
Electric Machines and Drives Conference Record, 1997. IEEE International
Conference_Location :
Milwaukee, WI
Print_ISBN :
0-7803-3946-0
DOI :
10.1109/IEMDC.1997.604181
