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김광헌(Kwang-Heon Kim),허민호(Min-Ho Heo),박영수(Young-Su Park),안재영(Jae-Young Ahn),양승학(Seung-Hak Yang),이일기(Il-Ki Lee) 전력전자학회 1998 전력전자학술대회 논문집 Vol.- No.-
Equalize SOC of the cell which effect on the chargeㆍ discharge ability and the efficiency of the battery, through the chargeㆍ discharge characteristic test of the battery source, and develope the high efficiency chargeㆍ discharge system in the series HEV have a constant engine-generator output. For this, in this paper, establish the electrical model and the condition of high efficiency chargeㆍ discharge, and propose the improvement method of chargeㆍ discharge characteristic in the battery source that consist of twenty Ni-MH cells connected serial/parallel.<br/>
광-ETherCAT 네트워크 기반 PMSM의 벡터제어 구현
김용진,김광헌,배영철,Kim, Yong-Jin,Kim, Kwang-Heon,Bae, Young-Chul 한국전자통신학회 2013 한국전자통신학회 논문지 Vol.8 No.4
본 논문에서는 로봇에서 다축 모션 제어를 쉽게 할 수 있는 AC 서보 드라이버의 성능 검증을 위하여 벡터 전류 제어 구현 기법을 제안한다. 이를 위해 먼저 PMSM을 구동을 위한 드라이버를 개발한 후 이 드라이버가 정상적으로 동작하는지를 벡터 전류로 확인하였다. 벡터 제어는 무부하에서 전류 벡터 제어를 실행하여 지령 전류에 따른 추종 전류를 비교하였다. 검증 결과 만족할 만한 결과를 얻었음을 확인하였다. In this paper we propose implement technique of vector current control in order to verify performance of an AC servo driver that is able to easy control of motion with multi-axis in the robot. In doing do, we have developed the AC servo driver to driving PMSM, and then we confirm that this driver whether operating or not normally by controlling of vector current. The vector current control was performed at the no load condition in PMSM. Then we compare command control and tracking control. As a result of verification, we recognize we get a satisfactory result.
로봇의 다축 모션 제어용 AC 서보 모터 드라이버 구현
김용진,배영철,김광헌,Kim, Yong-Jin,Bae, Young-Chul,Kim, Kwang-Heon 한국전자통신학회 2012 한국전자통신학회 논문지 Vol.7 No.3
An effort for motion control of multi-axis in robot have been continued recently. In this paper, we propose implementation method for AC servo driver that can be easily motion control of multi-axis in robot. This proposed method implement EtherCAT communication technologies of bi-directional optical communication based on single optical core method that applied WDM for communication between control stage which is upper and AC servo drive stage. 최근에 로봇에서 다축 모션 제어를 위한 노력이 계속되고 있다. 본 논문에서는 로봇에서 다축 모션 제어를 쉽게 할 수 있는 AC 서보 드라이버를 구현 기법을 제안한다. 제안한 방법은 먼저 상위의 제어기 단과 드라이버단 사이의 통신을 위해 WDM 방식을 적용한 싱글 광 코어 기반의 양방향 광 EtherCAT 통신 기술을 적용하여 구현한다.
임영철(young-chol Im),김광헌(kwang-heon Kim),나석환(sock hwan Na),김현덕(hyoun-dug Kim),안정훈(jung hun An) 전력전자학회 1998 전력전자학술대회 논문집 Vol.- No.-
For the practical using the SRM by domestic application, we must of all have solution to the noise and the vibration. This paper presents the acoustic noise emitted from the SRM. The emitted noise it particularly strong when the frequency of deformation coincides with that of a natural mechanical resonance of the stator. To reduce the emit acoustical noise varying the switching frequency randomly. We will consist of SRM control system by using DSP, and confirm the effects of the noise reduction.<br/> <br/>
최대토크/효율, 최소토크맥동의 전압/스위칭각에 의한 SRM 운전
차현록(Hyun-rok cha),김광헌(Kwang-heon kim),임영철(Young-cheol lim),장도현(Do-hyun jang) 전력전자학회 1999 전력전자학술대회 논문집 Vol.- No.-
This paper presents the switching angle and voltage for maximizing torque/efficiency and minimizing torque ripple of 4 -phase 6-poles SRM The switching angle and voltage is determined through the approximated analysis and computer simulation by using SIMULINK?? according to the speed and torque required by load And then one-chip microcontroller controls the switching angle and voltage of an asymmetrical inverter in the SRM driver. Also, we expects that the driving, methods, which are maximizing torque/ efficiency and minimizing torque ripple, are suitable for the electric vehicle, the industrial application and household appliances.
SRM의 최대 토크, 효율 및 최소 토크리플 운전을 위한 스위칭 각
김현덕(Hyun-Dug Kim),차현록(Hyun-Lok Cha),김광헌(Kwang-Heon Kim),나석환(Sock-Hwan Na),임영철(Young-Chol Lim) 전력전자학회 1999 전력전자학술대회 논문집 Vol.1999 No.7
This paper presents a driving method of 3-phase 4-poles SRM(switched reluctance motor) drived by switching angle control. In this study, the switching angle is determined from approximated analysis and computer simulation by using MA TLAB@ for high efficiency according to the speed and torque required by load, and then microcontroller controls the switching angle of asymmetrical inverter in SRM driver Also, we experiment the maximum torque driving and maximum power driving by controlling switching angle available to electric vehicle
김기선(Ki-Seon Kim),송성근(Sung-Geun Song),조수억(Su-eog Cho),최준호(Joon-Ho Choi),김광헌(Kwang-Heon Kim),박성준(Sung-Jun Park) 대한전기학회 2009 전기학회논문지 Vol.58 No.12
The study on the multi-level inverter has been increasingly progressing to reduce the switching loss and improve the THD of output current in photovoltaic inverter. Recently, the main topics of multi-level inverter are to reduce the number of devices maintaining the power quality. Therefore, the novel topology was proposed for these problem which is composed of the isolated H-bridge multi-level inverter using the three phase low frequency transformer. The proposed multi-level inverter may not be need for a independent DC power, diode and capacitor. Specially, It has a advantage in generating high voltage source. The proposed approach is verified through simulation and experiment.