Motor control method and motor control system

Details Motor control method and motor control system Motor control method and motor control system

1998-06-10

2000-03-28

Ro, Bentsu

Electricity: motive power systems

Synchronous motor systems

Armature winding circuits

318722, 318724, H02P 517

Patent

active

060436247

ABSTRACT:
In an a.c. motor control method and apparatus, operations are carried out at a current controller and a voltage setting using interrupt signals generated in synchronism with maximum and minimum values of a carrier wave at a control device for controlling an inverter for driving an alternating current motor. In operations at the voltage setting part carried out using one of the interrupt signals, a carrier wave is corrected in such a manner that phases of voltage command values gradually come into synchronism with a carrier wave. An integral multiple of the period of the carrier wave becomes the period of the a.c. voltage and current control operation timing is carried out in synchronism with the carrier wave.

REFERENCES:
patent: 4490661 (1984-12-01), Brown et al.
patent: 4823056 (1989-04-01), Watanabe et al.
patent: 5581169 (1996-12-01), Kerkman et al.
patent: 5680299 (1997-10-01), Yasuda et al.
High Performance Vector Controlled Three-level GTO Inverter System for Electric Traction, Proceedings of 1995 International Power Electronics Conference "IPEC-Yokohama '95", The Institute Of Electrical Engineers Of Japan, 4 pages, 1995.

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