Method of starting a motor

Details Method of starting a motor Method of starting a motor

1993-09-09

1995-03-07

Ro, Bentsu

Electricity: motive power systems

Motor load, armature current or force control during...

Initial, 'cracking' or 'starting from rest' torque control

318254, H02P 118

Patent

active

053961595

ABSTRACT:
A method of starting a motor comprising a first starting step of supplying an exciting current to armature coils, a first holding step for holding the exciting current after the first starting step, a second starting step of supplying an exciting current to the armature coils after the first holding step, a second holding step of holding this exciting current after the second starting step, and a third starting step of supplying an exciting current to the armature coils after the second holding step. In this method, the frequency f.sub.1 of the first holding step is larger than the characteristic frequency F.sub.0 of the rotation system of the motor (f.sub.1 >F.sub.0) and the frequency f.sub.2 of the second holding step is smaller than the characteristic frequency F.sub.0 of the rotation system (f.sub.2 <F.sub.0).

REFERENCES:
patent: 3739248 (1973-06-01), Wehde
patent: 4097788 (1978-06-01), Nygaard et al.
patent: 4251758 (1981-02-01), Pedersen et al.
patent: 4876491 (1989-10-01), Squires et al.
patent: 4879498 (1989-11-01), Shinohara et al.
patent: 4928043 (1990-05-01), Plunkett
patent: 5019756 (1991-05-01), Schwarz
patent: 5191270 (1993-03-01), McCormack
patent: 5225759 (1993-07-01), Endo et al.
patent: 5235264 (1993-08-01), Kaneda et al.
patent: 5298838 (1994-03-01), Peters et al.

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