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Thyristor에 의한 直流 分捲電動機의 速度制御에 관한 硏究
金澄龍 건국대학교 1978 論文集 Vol.7 No.1
In this experimental study, the thyristor wart employed for direct-current motor to secure an efficient speed control, and it was proved to be possible to control the speed by a simplified circuit through the speed control test with inverse electro-motive force. The results of the test were as follows : ① Erroneous operation likely to happen by reverse current failure of S.C.R. could be eliminated by the use of erroneous operation preventing circuit. ② Velocity fluctuation rate under the rated load was improved to by within 3% and 1.5% by the electrostatic Voltage Control and the static velocity control respectively. ③ The efficiency of the whole apparatus was reformed to a higher level of 80% under the rated load. on the contraroy of those favorable results, the effect by changing voltage of power source appeared to be rather severe.