Effects of chopping on core losses and inductance profiles of SRM drives

A coupled finite element-state space (CFE-SS) model of switched reluctance motor (SRM) drive systems is used to evaluate the impact of chopping on the machine performance characteristics. The model is used to predict the impact of chopping on the machine inductance profiles, armature currents, and core losses. The modeling environment utilizes an iterative approach which includes the full impact of nonlinearities on the machine magnetic circuit, that results in the nonsinusoidal flux density waveforms in the different parts of the machine, modeling approach is applied to a four phase SRM. Furthermore, the predicted results are verified by comparison to experimental data.

[1]  P. Biringer,et al.  A simple method of estimating the minor loop hysteresis loss in thin laminations , 1978 .

[2]  N. Demerdash,et al.  Determination of Saturated Values of Rotating Machinery Incremental and Apparent Inductances by an Energy Perturbation Method , 1982, IEEE Transactions on Power Apparatus and Systems.

[3]  A. A. Arkadan,et al.  The coupled problem in switched reluctance motor drive systems during fault conditions , 1994 .

[4]  R. Krishnan,et al.  Estimation of switched reluctance motor losses , 1988, Conference Record of the 1988 IEEE Industry Applications Society Annual Meeting.

[5]  Yoichi Hayashi,et al.  A new approach to calculating core losses in the SRM , 1994, Proceedings of 1994 IEEE Industry Applications Society Annual Meeting.

[6]  B. W. Kielgas,et al.  Effects of Force Fitting on the Inductance Profile of a Switched Reluctance Motor , 1992, Digest of the Fifth Biennial IEEE Conference on Electromagnetic Field Computation.