Electricity: motive power systems – Induction motor systems – Primary circuit control
Patent
1991-09-09
1993-10-26
Wysocki, Jonathan
Electricity: motive power systems
Induction motor systems
Primary circuit control
318 7, H02F 700
Patent
active
052569446
ABSTRACT:
A speed control method and apparatus for a motor driven by output of a power conversion unit, wherein a first current command value is inputted to derive a drooping variable, a deviation between a detected speed value of the motor and a speed command value is derived, the first current command value is derived on the basis of a value obtained by compensating the deviation with the drooping variable, the speed command value is inputted to derive an acceleration or deceleration current value for accelerating or decelerating the motor, and the first current command value and the acceleration or deceleration current value are added together to derive a second current command value and control the output current of the power conversion unit on the basis of the second current command value.
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F. Frohr et al., Einfuhrung in die elektronische Regelungstechnik, 4th Edition, 1976, Siemens AG, pp. 277-281.
Chino Toshihiko
Shimizu Itsuo
Tobise Masahiro
Yamasawa Yuji
Hitachi , Ltd.
Kawasaki Steel Corporation
Wysocki Jonathan
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