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고속철도 영구자석 구동시시스템의 자속추정방식을 이용한 센서리스 제어
진강환(Kang-Hwan Jin),김성제(Sung-Je Kim),박동규(Dong-Kyu Park),김윤호(Yoon-Ho Kim) 한국조명·전기설비학회 2010 한국조명·전기설비학회 학술대회논문집 Vol.2010 No.5월
In this paper possibility of the sensorless control application using flux estimation approach to the IPMSM based next generation high speed railway system is investigated. The next generation high speed railway system is a power distributed type and uses vector control method for motor speed control. The sensorless control algorithm based on flux estimation approach is applied to the vector controller using the IPMSM based next generation high speed railway system parameters. Simulation programs based on Matlab/Simulink is developed. Finally the sensorless controller characteristics are analyzed by the simulation results.
‘ㅁㅓ’ 형 코어를 사용한 비접촉 직렬 공진 컨버터의 공극에 따른 공진주파수 특성에 대한 연구
진강환(Kang-Hwan Jin),강정남(Jung-Nam Kang),고근택(Kun-Taek Ko),김윤호(Yoon-Ho Kim) 전력전자학회 2009 전력전자학술대회 논문집 Vol.2009 No.1
본 논문에서는 큰 공극에도 높은 결합계수를 유지하여 자화전류를 줄이고 누설 성분을 줄일 수 있는 ‘ㅁㅓ’ 형 코어를 사용한 비접촉 직렬 공진 컨버터를 제안한다. 제안된 시스템은 비접촉 변압기 공극을 1mm로 가정하여 설계되었고, 스위칭 주파수를 고정하고 공극을 10mm까지 증가 시키면서 실험을 수행하였다. 이를 통하여 공극 변동에 의한 인버터 출력전류의 위상변화를 확인하여 분석된 공진주파수 특성과 비교하였다. 제안된 시스템은 공극이 증가하여도 소프트 스위칭을 유지하여 스위치 전류피크 발생 위험을 제거하고, 높은 결합계수를 유지하여 1차측 자화전류의 증가분을 줄일 수 있어 안정된 시스템을 유지할 수 있음을 확인하였다. 제안된 시스템의 우수함을 확인하기 위해 동일 조건의 일반적인 EE 코어를 사용한 비접촉 직렬 공진 컨버터와 비교하여 증명하였다.
PMSM이 적용된 고속철도 견인전동기 시스템의 전류 및 속도 제어기 설계
진강환(Kang-Hwan Jin),이두희(Du-Hee Yi),권순환(Soon-Hwan Kwon),강정남(Jung-Nam Kang),김윤호(Yoon-Ho Kim) 한국조명·전기설비학회 2010 한국조명·전기설비학회 학술대회논문집 Vol.2010 No.5월
This paper presents the current and speed controller design procedure and their performance for the IPMSM based next generation high speed railway system. The next generation high speed railway system is a power distributed type and uses vector control method for motor speed control. Since the speed and current controller gains of the vector control system directly affects to the transient characteristics and speed control capability, the systematic design of the controllers are required. In this paper the controllers are designed using the IPMSM based next generation high speed railway system parameters. Simulation programs based on Matlab/Simulink is developed. Finally the controller characteristics are analyzed by the simulation results.
진강환(Kang-Hwan Jin),서용훈(Yong-Hun Suh),이상현(Sang-Hyun Lee),김윤호(Yoon-Ho Kim) 한국조명·전기설비학회 2011 조명·전기설비학회논문지 Vol.25 No.12
In this paper, a sensorless speed control system is designed for the next generation high speed railway at zero and low speed region. The applied vector control scheme is a maximum torque per ampere(MTPA) method to utilize reluctance torque of IPMSM. The designed sensorless control scheme is a rotating high frequency voltage signal injection method. To verify the designed system, a simulator for the vector controller and sensorless controller is implemented using Matlab/simulink..
IPMSM이 적용된 차세대 고속전철 시스템의 약계자 제어
진강환(Kang-Hwan Jin),이두희(Du-Hee Yi),김성제(Sung-Je Kim),장진영(Chin-Young Chang),김윤호(Yoon-Ho Kim) 대한전기학회 2010 전기학회논문지 P Vol.59 No.4
In this paper, a vector control of the IPMSM drives for the next generation domestic high speed railway system is presented. The applied control method uses one pulse mode field weakening control in constant power region, and maximum torque control per ampere control in constant torque region considering current and voltage limits. An overmodulation control interval is inserted to improve the transient characteristics during transition period of the control modes. Simulation programs based on Matlab/Simulink are developed. Finally the designed system is verified by simulation and their characteristics are analyzed by the simulation results.
비접촉 전력전송 시스템을 위한 ‘ㅁㅓ’ 형 코어 설계 및 분석
陳康煥(Kang-Hwan Jin),金知珉(Ji-Min Kim),金洙弘(Soo-Hong Kim),金倫鎬(Yoon-Ho Kim),金恩洙(Eun-Soo Kim) 대한전기학회 2008 전기학회논문지 Vol.57 No.1
In the transformer that is used for the contactless power transmission system, the primary and secondary sides are separated structurally unlike general transformers. When the contactless transformer is built, it forms relatively bigger air gap than the general transformer. Thus it is difficult to transfer energy from the primary side input to the secondary side output with high power efficiently because of low coupling coefficient. This paper proposes a contactless transformer using the rectangular type core that maintains high coupling coefficient even when it has relatively large air gap. The performance characteristics of the proposed transformer are compared with the transformer using general EE core to the air gap variation. The proposed contactless system using rectangular type core and de-de full bridge converter, and the system using EE core type and de-de full bridge converter are respectively implemented and their performance characteristics are verified by the simulation and experiment.