http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
Junaid Ikram(주나이드),Qudsia Junaid(쿳시야),Kyu-yun Hwang(황규윤),Byung-Il Kwon(권병일) 대한전기학회 2009 대한전기학회 학술대회 논문집 Vol.2009 No.7
In the design and analysis of electric machines the precise calculation of iron loss has incredible significance. It is tough to foresee iron losses precisely in machines due to distribution of non sinusoidal flux density. It is necessary to approximate the iron losses for the precise computation of efficiency. This paper presents a novel approach for the prediction of iron losses of the brushless dc (BLDC) motors by considering the effects of minor hysteresis loops in the simplified model. The novel iron loss model results are compared with the simplified model and with finite element method (FEM).
Junaid Ikram,Nasrullah Khan,Qudsia Junaid,Salman Khaliq,Byung-il Kwon 한국자기학회 2017 Journal of Magnetics Vol.22 No.2
This paper presents a 2-D analytical method to calculate the back EMF of the axial flux permanent magnet synchronous generator (AFPMSG) with coreless stator and dual rotor having magnets mounted on both sides of rotor yoke. Furthermore, in order to reduce the no load voltage total harmonics distortion (VTHD), the initial model of the coreless AFPMSG is optimized by using a developed analytical method. Optimization using the 2-D analytical method reduces the optimization time to less than a minute. The back EMF obtained by using the 2-D analytical method is verified by a time stepped 3-D finite element analysis (FEA) for both the initial and optimized model. Finally, the VTHD, output torque and torque ripples of both the initial and optimized models are compared with 3D-FEA. The result shows that the optimized model reduces the VTHD and torque ripples as compared to the initial model. Furthermore, the result also shows that output torque increases as the result of the optimization.
쿳시야 주나이드(Qudsia Junaid),주나이드 이크람(Junaid Ikram),유용민(Yong Min You),황규윤(Kyu-Yun Hwang),권병일(Byung Il Kwon) 대한전기학회 2010 대한전기학회 학술대회 논문집 Vol.2010 No.4
This paper presents an optimization of the double sided axial flux penn anent magnet synchronous generator (AFPMSG) with coreless stator. A 2-D analytical model is used for the optimization of the double sided AFPMSG having concentrated winding. The micro genetic glgorithm (MGA) is employed for the minimization of voltage total harmonic distortion (VTHD) while maintaining the no load voltage constant. The results of the optimized model are compared with the initial model. The results show the reduction in the value of the VTHD.