Device for the dynamic measurement of the torque of a self-synch

Details Device for the dynamic measurement of the torque of a self-synch Device for the dynamic measurement of the torque of a self-synch

1990-06-28

1991-10-22

Ro, Bentsu

Electricity: motive power systems

With signals, meters, recorders or testing devices

7386208, G01L 300

Patent

active

050598783

ABSTRACT:
The device for the dynamic measurement of the torque Ci of a polyphase self-synchronous motor comprises a sensor of the electrical angle between one of the phases and the axis perpedicular to the magnetic moment (APMM), circuits for the computation of the cosines of the angles (A, A-120.degree., A+120.degree.) between each phase and the APMM, sensors of current on each phase, and means to compute the torque Ci by application of the formula:

REFERENCES:
patent: 3980950 (1976-09-01), Kutsevalov et al.
patent: 4088934 (1978-05-01), D'Atre et al.
patent: 4240020 (1980-12-01), Okuyama et al.
patent: 4240296 (1980-12-01), Kolodziej
patent: 4490661 (1984-12-01), Brown et al.
patent: 4651068 (1987-03-01), Meshkat-Razavi
patent: 4918997 (1990-04-01), Pouillange
patent: 4991429 (1991-02-01), Stacey et al.
Conference Record Industry Applications Society, Oct. 6-11, 1985, pp. 790-797, H. Le-Huy et al., "Minimization of Torque Ripple in Brushless DC Motor Drives".
Proceedings IECON '87, Nov. 3-6, 1987, U.S., pp. 454-463, B. K. Bose et al., "A Microcomputer-Based Control and Simulation of an Advanced IPM Synchronous Machine Drive System for Electric Vehicle Propulsion".
Patent Abstracts of Japan, vol. 4, No. 32 (E-2)(514), Mar. 19, 1980, & JP-A-55 5012, Jan. 14, 1980, H. Itou, "Method of Controlling Speed of Brushless Motor".

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