In this paper the H∞ robust control technique is applied to design a switched reluctance motor drive where the rotor position sensor provides just six pulses per revolution. A control system analyzer is used to obtain the frequency responses at each design step. To reduce the effect of the inherent phase inductance variations, an H∞ two-degree-of-freedom control scheme is designed in the current-loop of the drive to achieve the demanding time-response specifications. In order to have a good load torque disturbance rejection ability, the H∞ loop shaping procedure is employed to construct a lead-lag type controller in the speed-loop of the drive. The designed H∞ controllers are evaluated in real-time experiments with a digital signal processor (DSP). The results demonstrate the effectiveness of the proposed strategy in comparison with that of a conventional design.

Issue Section:
Technical Papers
Keywords:
reluctance motor drives, control system synthesis, control system analysis, optimal control, frequency response, robust control, Switched Reluctance Motor, Motor Drive, H∞ Control, Robust Control
Topics:
Control equipment, Design, Frequency response, Motor drives, Robust control, Control systems, Rotors, Torque
1.
Miller, T. J. E., 1993, Switched Reluctance Motors and Their Control, Clarendon Press, Oxford.
2.
Lawrenson
,
P. J.
,
Stephenson
,
J. M.
,
Blenkinsop
,
P. T.
,
Corda
,
J.
, and
Fulton
,
N. N.
, “
Variable Speed Switched Reluctance Motors
,
1980
,”
IEE Proc. Part B
,
127
, No.
4
, pp.
235
–
265
.
3.
Fulton, N. N., 1987, “The Application of CAD to Switched Reluctance Drives,” Electric Machines and Drives Conference, IEE Conference Publication, No. 282, pp. 275–279.
4.
Miller, T. J. E., 1988, Switched Reluctance Motor Drives—A Reference Books of Collected Papers, Intertec Communications, Inc., CA.
5.
Rajashekara, K., Kawamura, A., and Matsuse, K., 1996, Sensorless Control of AC Motor Drives—Speed and Position Sensorless Operation, IEEE Press, New York.
6.
Francis, B. A., 1987, A Course in H∞ Control Theory, Lecture Notes Control and Information Sciences, Vol. 88, Springer-Verlag, Berlin.
7.
McFarlane
,
D. C.
, and
Glover
,
K.
,
1992
, “
A Loop Shaping Design Procedure Using H∞ Synthesis
,”
IEEE Trans. Autom. Control
,
37
, pp.
759
–
769
.
8.
Younkin, G. W., 1996, Industrial Servo Control System—Fundamentals and Applications, Marcel Dekker, New York.
9.
Ellis, G., 1991, Control System Design Guide, Academic Press, Tokyo.
10.
Ilic’-Spong
,
M.
,
Marino
,
R.
,
Peresada
,
S. M.
, and
Taylor
,
D. G.
,
1987
, “
Feedback Linearizing Control of Switched Reluctance Motors
,”
IEEE Trans. Autom. Control
,
32
, pp.
371
–
379
.
11.
Green, M., and Limebeer, D. J. N., 1995, Linear Robust Control, Prentice Hall, Englewood Cliffs, NJ.
12.
Doyle
,
J. C.
,
1982
, “
Analysis of Control Systems with Structured Uncertainties
,”
IEE Proc. Part-D: Control Theory Appl.
,
129
, pp.
242
–
250
.
Copyright © 2001
 by ASME
You do not currently have access to this content.