VSCF start system with precision voltage

Details VSCF start system with precision voltage VSCF start system with precision voltage

1989-05-12

1990-06-26

Ro, Bentsu

Electricity: motive power systems

Switched reluctance motor commutation control

318138, H02P 600

Patent

active

049375083

ABSTRACT:
The problem of obtaining precision control of a synchronous motor is solved in an engine start control which utilizes a fundamental wave component as a feedback value. The motor receives power from a main inverter and an excitation inverter. The inverters are controlled by a control unit which includes a pulse width modulation generator which is responsive to a voltage command and a commutation command to develop switching signals for controlling the switches in the main inverter. At speeds above a preselected minimum speed, the commutation angle command and the voltage command are developed in a closed loop manner responsive to a feedback signal representing the fundamental output of the inverter.

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patent: 4712050 (1987-12-01), Nagasawa et al.
patent: 4743815 (1988-05-01), Gee et al.

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