Journal of Advanced Marine Engineering and Technology
- 제9권1호
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- Pages.61-73
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- 1985
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- 2234-7925(pISSN)
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- 2234-8352(eISSN)
#Kr{\ddot}{a}mer# 시스템에 의한 3.phi.유도전동기의 특성에 관한 연구
A study on characteristics of three phase induction motor by #Kr{\ddot}{a}mer# system
초록
The induction motor is widely used in the power equipments of the ship and the various industrial drive applications because it is robust and relatively simple and cheap to manufacture, but it has a disadvantage that the speed of induction motor is not controlled in wide range such as d.c motor. In this paper, the characteristics relating to the Kramer system that the speed of three phase wound type induction motor is controlled by changing the exciting e.m.f. of the secondary circuit is described. In order to analyze the characteristics, a new simplified and approximated T-type equivalent circuit from the Kramer circuit with three phase graetz connection and d.c machine is proposed. The stator current, motor torque and mechanical output power are computed by the current, torque and power equations derived by its equivalent circuit. Through the experiments, the
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