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Design of a compact hysteresis motor used in a gyroscope

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1 Author(s)
Rajagopal, K.R. ; Electr. Eng. Dept., Indian Inst. of Technol., New Delhi, India

This paper presents the computer-aided design and test results of a compact three-phase hysteresis synchronous motor used as the drive motor of a gyroscope. Hysteresis motor is the best choice for this application because of its compactness and reliability. Also, it has a self-starting capability and it does not require any position sensor and commutation circuits. The design of a three-phase 32-V 400-Hz 6000-r/min hysteresis motor in full is presented. A computer program in MATLAB is created for the design and analysis of the hysteresis motor and used extensively in this work. The test results of the developed motor are fairly matching with the computed values. Results of a detailed study conducted to identify the harmonic torque components reveal that the net torque available with a six-pulse inverter supply is only 92.89% of that with a sinusoidal supply.

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Magnetics, IEEE Transactions on  (Volume:39 ,  Issue: 5 )