相變換에 의한 三相誘導電動機의 1/3, 2/3 速度制御에 관한 연구

Abstract

3상, 4극, 동기속도 1000rpm의 농형유도전동기가, 제3고조파 성분의 起磁力의 합성과 相變換에 의하여, 쉽게 1200, 600rpm의 동기속도로 변환될 수 있었다.

이 구동방법은 일반적인 3상농형유도전동기가 單相電源에 의해서 정격출력의 馬力수를 낼 수 있었다.

또한 권선형 유도전동기는 2차저항에 의하여 경부하에서 300~1,800rpm의 가변속도변화범위를 얻을 수 있었으며 극수변환법과 비교하여 여러 운전특성에 큰 장점을 갖고 있었다.

The synchronous speed, 1800rpm, of the 3ø, 4pole, induction motor is easily converted to the 1200 and 600rpm by composition of the 3rd harmonic mmf(magnetomotive force)and phase conversion.

This driving method makes it possible the 3ø, induction motor to be operated in the 1ø power source with the equivalent horse powers and rated phase currents.

And the wound-rotor induction motor can be controlled to the variable wide speed ranges, 300~1,800rpm, by this operation, and have more advantages in some characteristics than conventional ople changing method.

The synchronous speed, 1800rpm, of the 3ø, 4pole, induction motor is easily converted to the 1200 and 600rpm by composition of the 3rd harmonic mmf(magnetomotive force)and phase conversion.

This driving method makes it possible the 3ø, induction motor to be operated in the 1ø power source with the equivalent horse powers and rated phase currents.

And the wound-rotor induction motor can be controlled to the variable wide speed ranges, 300~1,800rpm, by this operation, and have more advantages in some characteristics than conventional ople changing method.