Synchronous motor with permanent magnets and motor system

Details Synchronous motor with permanent magnets and motor system Synchronous motor with permanent magnets and motor system

1996-09-18

1999-12-28

Ip, Paul

Electricity: motive power systems

Synchronous motor systems

318798, 318805, 318806, H02P 528

Patent

active

060086149

ABSTRACT:
In a motor with permanent magnets and a motor system, the value .alpha. produced by dividing, by the induced voltage constant ke, the product of the inductance Lm of the motor itself or the inductance Ls of the motor system in the d-q coordinate system is selected to meet a predetermined condition. The range of rotational speeds in which the motor can be operated while maintaining a predetermined output under field weakening control can be widened. If a condition is established to determine a ratio by which the rated rotational speed under normal operating conditions is multiplied into a rotational speed under field weakening control, then conditions for a motor or a motor system that can be used can be determined.

REFERENCES:
patent: 3740629 (1973-06-01), Kohlhagen
patent: 4450395 (1984-05-01), Kawamura et al.
patent: 4651840 (1987-03-01), Shimizu et al.
patent: 4724373 (1988-02-01), Lipo
patent: 4857786 (1989-08-01), Nihei et al.
patent: 5038065 (1991-08-01), Matsubayashi et al.
patent: 5038092 (1991-08-01), Asano
patent: 5144564 (1992-09-01), Naidu et al.
Mulukutla S. Sarma, "Electric Machines-Steady State Theory and Dynamic Performance", West Publishing Co, 1985, pp. 487-522.
Akira Kumamoto and Yoshihisa Hirane, A Semi-Closed loop Torque Control of a Buried Permanent Magnet Motor Based on a New Flux Weakening Approach, IEEE IAS Annual Meeting Part I, Oct. 1989, San Diego, pp. 656-661.
Stephen R. Macminn and Thomas M. Jahns, Control Techniques for Improved High-Speed Performance of Interior PM Synchronous Motor Drives, IEEE Transactions on Industry Applications, vol. 27, No. 5, Sep. 1991, New York, pp. 997-1004.

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