Control-based reduction of pulsating torque for PMAC machines

被引:34
作者
Grcar, B [1 ]
Cafuta, P
Stumberger, G
Stankovic, AM
机构
[1] Univ Maribor, Fac Elect Engn & COmp Sci, SLO-2000 Maribor, Slovenia
[2] Northeastern Univ, Dept Elect & Comp Engn, Boston, MA 02115 USA
关键词
adaptive estimators; nonlinear control; PMAC machines; reduction of ripple and cogging torque;
D O I
10.1109/TEC.2002.1009464
中图分类号
TE [石油、天然气工业]; TK [能源与动力工程];
学科分类号
0807 ; 0820 ;
摘要
Control methods in torque pulsating reduction for surface-mounted permanent magnet motors are discussed in this paper. The pulsating torque is a consequence of the nonsinusoidal flux-density distribution caused by the interaction of the rotor's permanent magnets with the changing stator reluctance. The proposed control method is estimator based. To assure parameter convergence, Lyapunov's direct method is used in estimator design for the flux Fourier's coefficients. A novel nonlinear torque controller based on flux/torque estimate is introduced to reduce the influence of the flux harmonics. The influence of the cogging torque is considerably reduced at lower motor speed using the internal model principle and adaptive feedforward compensation technique. The overall control scheme and experimental results are also presented.
引用
收藏
页码:169 / 175
页数:7
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