| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an induction motor control device for controlling an induction motor so as to stably operate it. <P>SOLUTION: Magnetic Energy Recovery Switches 100u, 100v, and 100w generate a voltage equivalent to one obtained by fluctuating the phase of a voltage generated by AC power supply VS by a value θset, and impress a voltage equivalent to the sum of the voltage and the voltage generated by the AC power supply VS on an induction motor M. A control part 200 determines the θset so that the effective value of the fundamental wave component of a load voltage detected by a voltage detecting part VM converges to a prescribed value, and determines timing of transition of each gate signal based on the θset value to supply the signal to each Magnetic Energy Recovery Switch. <P>COPYRIGHT: (C)2012,JPO&INPIT |
