| 摘要 |
PURPOSE:To control to balance a load at the same ratio in a range from a low value to a high value by dividing a load balance correction signal output from an armature current corrector by the rotating speed of a motor. CONSTITUTION:When the armature current of a motor 1M is I1 and the armature current of a motor 2M is I2 in the motor 1M, a load balance correction signal output from a balancer LBC of an armature current corrector 7 becomes (I1-I2). When a field current corrector 10 receives the load balance correction signal, it divided the signal by the rotating speed of the motor 1M, thereby forming a field current correction signal. This signal is input to a field current controller 8 to control the field current of the motor 1M, thereby varying an induced voltage proportionally to a field magnetic field irrespective of the rotating speed of the motor. |
