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매입형 영구자석 동기전동기의 d. q축 인덕턴스 도출 및 토크 산출
장석명(Seok-Myeong Jang),황선익(Seon-Ik Hwang),박유섭(Yu-Seop Park),최장영(Jang-Young Choi),서진호(Jin-Ho Seo) 대한전기학회 2010 대한전기학회 학술대회 논문집 Vol.2010 No.4
This paper deals with d, q-axis inductance derivation and torque calculation of interior permanent magnet synchronous motor (IPMSM). Using 2-D finite element analysis (FEA), noload flux linkage and load flux linkage are investigated. With those results, the electrical angle difference between noload flux linkage and load flux linkage, L<SUB>d</SUB>(d-axis inductance) and L<SUB>q</SUB>(q-axis inductance) are calculated in each current value and current phase angle condition at rated speed. In addition, reluctance torque and magnetic torque are calculated and analyzed as well.
300마력 60000rpm급 초고속 전동기의 실측 전류 파형을 고려한 손실 특성 해석
장석명(Seok-Myeong Jang),한철(Cheol Han),고경진(Kyoung-Jin Ko),이용복(Yong-Bok Lee),김태호(Tea-Ho Kim),이성호(Sung-Ho Lee) 대한전기학회 2010 대한전기학회 학술대회 논문집 Vol.2010 No.7
This paper deals with comparison and analysis for various losses of high-speed permanent magnet synchronous motor using phase current harmonic analysis. Through measured current wave, various losses are calculated and compared with losses according to current sine wave. Poynting vector, Steinmetz equation, finite element method and so on have been used to investigate the losses of high-speed permanent magnet machine.
공간고조파법을 이용한 풍력용 영구자석형 발전기의 전자기적 특성해석 및 제어정수 도출
장석명(Seok-Myeong Jang),최장영(Jang-Young Choi),조한욱(Han-Wook Cho),유대준(Dae-Joon You),경남호(Nam-Ho Kyung),윤기갑(Ki-Kab Yoon) 대한전기학회 2006 대한전기학회 학술대회 논문집 Vol.2006 No.7
Using the MATLAB/SIMULINK, this paper presents dynamic simulation model for 6㎿ wind power generation systems with the DFIG considering distribution systems and performs the dynamic analysis of wind power systems.
300마력급 초고속 전동기의 스러스트 자기 베어링/댐퍼 설계 및 특성해석
장석명(Seok-Myeong Jang),최장영(Jang-Young Choi),박지훈(Ji-Hoon Park),이용복(Yong-Bok Lee),이희섭(Hee-Sub Lee) 대한전기학회 2007 대한전기학회 학술대회 논문집 Vol.2007 No.4
This paper deals with design and analysis of thrust magnetic bearing for 300HP class high speed motor. Using the solutions obtained from equivalent magnetic circuits, we predicts the electromagnetic characteristics such as thrust, time constant and power loss according to design parameters. And then, using non-linear finite element analysis, a detailed design is performed considering saturation in order to meet requirements.
전압 구동 방법에 따른 터보 압축기용 초고속 영구자석 동기 전동기의 회전자 손실 해석
장석명(Seok-Myeong Jang),김현규(Hyun-Kyu Kim),고경진(Kyoung-Jin Ko),이성호(Sung-Ho Lee),홍영희(Young-Hee Hong) 대한전기학회 2009 대한전기학회 학술대회 논문집 Vol.2009 No.7
This paper deals with the analysis on eddy current looses of high speed permanent magnet synchronous motor (PMSM) for turbo compressor according to voltage source driving. This paper presents analytical procedures for calculation of the eddy current losses using Poynting theorem. On the basis of the magnetic vector potential and a two-dimensional (2-D) cylindrical coordinate system, this paper derived analytical solutions of the eddy current looses using phase current analysis. The eddy current losses of each harmonic obtained by fast Fourier transform (FFT) analysis of phase current are with results obtained from finite-element method (FEM).