Computation of winding inductances of permanent magnet brushless DC motors with damper windings by energy perturbation

A method for the calculation of motor winding inductances is presented in which damping effects due to metallic retainment sleeves and intentionally introduced damper bar (amortisseur) windings are included. The inductance computation method makes use of the combined energy perturbation concept and finite-element field solutions. These parameters are necessary for the prediction of the dynamic performance of such motors with rotor damping. This modeling approach accounts for all saliency effects, and is entirely carried out in the natural abc frame of reference. Thus, it facilitates the process of integration of the modeling of the motor and its associated power electronics. The approach is most effective in the design of damper bar systems for enhancement of the performance of such motors, as demonstrated in the application of this approach to a 15 hp, 120 V, 6-pole, samarium-cobalt, permanent-magnet brushless DC motor. >

[1]  J. T. Edge,et al.  An Electromechanical Actuator Technology Development Program , 1978 .

[2]  F. Fouad,et al.  Magnetic Field Modeling of Permanent Magnet Type Electronically Operated Synchronous Machines Using Finite Elements , 1981, IEEE Transactions on Power Apparatus and Systems.

[3]  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.

[4]  Nabeel A. O. Demerdash,et al.  Digital simulation of power conditioner-machine interaction for electronically commutated DC permanent magnet machines , 1981 .

[5]  Nabeel A. O. Demerdash,et al.  Determination of winding inductances in ferrite type permanent magnet electric machinery by finite elements , 1982 .

[6]  R. H. Miller,et al.  Improved transistor-controlled and commutated brushless DC motors for electric vehicle propulsion , 1983 .

[7]  J. T. Edge,et al.  Design of a samarium cobalt brushless dc motor for electromechanical actuator applications , 1977 .

[8]  Thomas W. Nehl,et al.  Dynamic Simulation of Radially Oriented Permanent Magnet-Type Electronically Operated Synchronous Machines with Parameters Obtained from Finite Element Field Solutions , 1982, IEEE Transactions on Industry Applications.

[9]  Nabeel A. O. Demerdash,et al.  Impact of the addition of a rotor-mounted damper bar cage on the performance of samarium-cobalt permanent magnet brushless DC motor systems , 1988 .

[10]  T. A. Nyamusa,et al.  Comparison of Effects of Overload on Parameters and Performance of Samarium-Cobalt and Strontium-Ferrite Radially Oriented Permanent Magnet Brushless DC Motors , 1985, IEEE Transactions on Power Apparatus and Systems.

[11]  N. A. Demerdash,et al.  Impact of Winding Inductances and Other Parameters on the Design and Performance of Brushless DC Motors , 1985, IEEE Power Engineering Review.

[12]  N.A Demerdash,et al.  Dynamic Modeling of Brushless dc Motors for Aerospace Actuation , 1980, IEEE Transactions on Aerospace and Electronic Systems.

[13]  R.H. Miller,et al.  Comparison Between Features and Performance Characteristics of Fifteen HP Samarium Cobalt and Ferrite Based Brushless DC Motors Operated by Same Power Conditioner , 1983, IEEE Transactions on Power Apparatus and Systems.

[14]  Nabeel A. O. Demerdash,et al.  Computer-aided modeling and experimental verification of the performance of power conditioner operated permanent magnet brushless DC motors including rotor damping effects , 1988 .