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IPM 스위칭 소자를 적용한 AC 전동차 추진제어장치(Converter/Inverter) 개발
김태윤(T.Y. Kim),노애숙(A.S. Kno),황광철(K.C. Hwang),최종묵(J.M. Choi),김주범(J.B. Kim) 전력전자학회 2004 전력전자학술대회 논문집 Vol.- No.-
In this paper, AC electric vehicle propulsion system(Converter/Inverter) using high power semiconductor, IPM(Intelligent Power module) is proposed. 2-Parallel operation of two PWM converter is adopted for increasing capacity of system and the VVVF inverter control is used a mixed control algorithm, where the vector control strategy at low speed region and slip-frequency control strategy at high speed region. The proposed propulsion system is verified by experimental results with a 1,350㎾ converter and 1,100㎸A inverter with four 210㎾ traction motors.
다양한 Attachment 작동을 위한 Thumb Wheel 및 Option Valve 의 상관관계
김태윤(T. Y. Kim) 유공압건설기계학회 2015 유공압건설기계학회 학술대회논문집 Vol.2015 No.10
As excavators are used in diverse work environment, the attachments that customers are using have become diverse. Regardless of the tonnage of machine, a more wide range of attachments are being used in some regions such as Europe and U.S compared to Korea. These attachments include forest machinery and mining machinery such as 5T MT and Log Loader in case of Doosan Standard machine. Even though the types of attachments used with excavators are different depending on purposes, 2 way attachment and rotating attachment are the two that are used the most. However, there are a variety of specifications to be applied by attachment, and the control ability that customers require for attachment is also diverse. Until now, existing excavator manufacturers have been selling machine with limited specifications to their customers. Recently, however, they are putting lots of efforts into developing diverse specifications of attachments to be applied to their machine. In this paper, the relation between thumb heel and option valve has been explored.