Title :
Nonlinear robust control of a vector-controlled synchronous reluctance machine
Author :
Sharaf-Eldin, Thanaa ; Dunnigan, Matthew W. ; Fletcher, John Edward ; Williams, Barry W.
Author_Institution :
Dept. of Comput. & Electr. Eng., Heriot-Watt Univ., Edinburgh, UK
fDate :
11/1/1999 12:00:00 AM
Abstract :
This paper presents the implementation of Slotine´s approach of sliding mode control for position control of a vector-controlled synchronous reluctance machine. A comparison is undertaken between the performance of a fixed gain controller and two sliding mode controllers for both the regulator and servo cases. Invariant performance is obtained using Slotine´s approach of sliding mode control compared to a fixed gain controller. Robustness to parameter variation is an important feature of this technique. This can be achieved through the control law design, assuming parameter variation bounds are known. These improvements are demonstrated for variations in the load inertia. Machine inductance ripple affects the quality of achievable position control. A state-space model for the machine to incorporate this effect yields drive simulation results that agree with presented experimental results
Keywords :
control system analysis; control system synthesis; machine vector control; nonlinear control systems; position control; reluctance motor drives; robust control; state-space methods; variable structure systems; Slotine´s approach; control design; drive simulation; fixed gain controller performance; inductance ripple; load inertia variations; nonlinear robust control; parameter variation; robustness; sliding mode position control; state-space model; vector-controlled synchronous reluctance machine; Core loss; Friction; Inductance; Position control; Reluctance machines; Robust control; Robustness; Rotors; Sliding mode control; Torque;
Journal_Title :
Power Electronics, IEEE Transactions on