Masahiro Kaimoto

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A control method for GTO PWM inverter parallel-set operation and a new protection system for prevention of short-circuit faults caused by turn-off failure, both to realize a high-power drive system are described. Timing control of GTO gate pulse command provided by a feedback loop, and a reactor at the output of the inverter can minimize the cross current(More)
A high performance variable speed drive system using current source inverter fed induction motor is described. The principle of the drive control is based on the field-orientation method, where the stator current is used as the vector quantity. To improve the system response and to operate smoothly at low speed, a current pulsewidth modulation (PWM) control(More)
Multiple microprocessors-based commutatorless motor drive system with exellent performance was developed and the four drive systems were manufactured for tandem rolling mills. For high performance control of the commutatorless motor, rapid and accurate control of the flux linkage and of the inverter commutating margin angle is important problem to be(More)
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