Drive system with a drive motor

Details Drive system with a drive motor Drive system with a drive motor

1990-08-02

1991-07-16

Ro, Bentsu

Electricity: motive power systems

Switched reluctance motor commutation control

318138, 318722, 318724, H02P 602, H02P 540

Patent

active

050327739

ABSTRACT:
A drive system has a drive motor with an associated current regulator. The current regulator controls the semiconductor contact elements of an electronic power stage, which is arranged downstream from the drive motor. This control is a function of a rotor-position sensor, whose rotor part is coupled to the rotor of this motor and has a number of magnetic poles corresponding to the number of poles of the drive motor. Furthermore, the current setpoint that is supplied to the current regulator is increased by overlapping an auxiliary voltage during the respective instant of commutation. Torque fluctuations which are caused by manufacturing tolerances can be then be eliminated. On the circumference of the rotor part, a number of magnetic field sensors corresponding to the number of phases m of the drive motor are mounted at a spatial distance of 360.degree. /(p.m) to each other where p is the number of pole pairs of the drive motor. The auxiliary voltage is derived from the analog voltage signal of the magnetic field sensors.

REFERENCES:
patent: 4777414 (1988-10-01), Storath et al.
patent: 4827196 (1989-05-01), Odell
patent: 4922513 (1990-05-01), Joichi
patent: 4980617 (1990-12-01), Tajima et al.

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