Abstract There is plenty of elliptical magnetic flux density (B) in the yoke and tooth roots of the induction motor stator, the rotational losses are greater than alternating ones, and therefore, the accurate calculation of rotation loss is the premise and foundation of the optimum design of the motor. Based on the 2D rotational magnetic properties measurement system, RPT, Brockhaus in Germany, the rotational loss in the non-oriented electrical steel sheet was measured and analyzed in this paper. By studying the traditional Bertotti’s model and Steinmetz equation, this paper put forward the improved models of core loss estimation for elliptic B locus. In order to verify the validity of the proposed model, a B-H vector sensor was set up to test the local losses in an induction motor stator core.
Chi Qingguang,Zhang Yanli,Ren Yajun等. Improvement on Rotational Loss Model and Measurement of Local Loss in the Iron Core[J]. Transactions of China Electrotechnical Society, 2018, 33(17): 3951-3957.
[1] Bertotti G.General properties of power losses in soft ferromagnetic materials[J]. IEEE Transactions on Magnetics, 1988, 24(1): 621-630. [2] 王洋, 刘志珍. 基于蛙跳模糊算法的Jies Atherton 铁心磁滞模型参数确定[J]. 电工技术学报, 2017, 32(4): 154-161. Wang Yang, Liu Zhizhen.Determination of Jiles Atherton core hysteresis model parameters based on fuzzy-shuffled frog leaping algorithm[J]. Transactions of China Electrotechnical Society, 2017, 32(4): 154-161. [3] Steinmetz C P.On the law of hysteresis[J]. Proceedings of the IEEE, 1984, 72(2): 196-221. [4] Landgraf F J G, Emura M, de Campos M F. On the steinmetz law[J]. Journal of Magnetism and Magnetic Materials, 2008, 320(20): e531-e534. [5] 张长庚, 杨庆新, 李永建. 电工软磁材料旋转磁滞损耗测量及建模[J]. 电工技术学报, 2017, 32(11): 208-216. Zhang Changgeng, Yang Qiangxin, Li Yongjian.Measurement and modeling of rotational hysteresis loss of electric soft magnetic material[J]. Transactions of China Electrotechnical Society, 2017, 32(11): 208-216. [6] 李丹丹, 刘富贵, 李永建, 等. 一种新的混合矢量磁滞模型磁滞算子定义方法[J]. 电工技术学报, 2015, 30(1): 15-21. Li Dandan, Liu Fugui, Li Yongjian, et al.A new definition of the hysteron in hybrid vector hysteresis model[J]. Transactions of China Electrotechnical Society, 2015, 30(1): 15-21. [7] Du R, Robertson P.Dynamic Jiles-Atherton model for determining the magnetic power loss at high frequency in permanent magnet machines[J]. IEEE Transactions on Magnetics, 2015, 51(6): 1-10. [8] Reinert J, Ansgar B.Calculation of losses in ferro- and ferromagnetic materials based on the modified steinmetz equation[J]. IEEE Transactions on Magnetics, 2001, 37(4): 1055-1061. [9] Brag S, Ammous K, Hanen M, et al, An improved empirical formulation for magnetic core losses estimation under non-sinusoidal induction[J]. IEEE Transactions on Magnetics, 2017, 32(3): 2146-2153. [10] Enokizono M.Vector magneto-hysteresis E&S model and magnetic characteristic analysis[J]. IEEE Transactions on Magnetics, 2006, 42(4): 915-918. [11] Guo Youguang, Zhu Jianguo, Zhi Weilin.Measurement and modeling of core losses of soft magnetic composites under 3d magnetic excitations in rotating motors[J]. IEEE Transactions on Magnetics, 2005, 41(10): 3925-3927. [12] Stumberger B, Hamler A.Accuracy of iron loss estimation in induction motors by using different iron loss models[J]. Journal of Magnetism and Magnetic Materials, 2004(S1): 272-276. [13] 江善林, 邹继斌, 徐永向, 等. 考虑旋转磁通和趋肤效应的变系数铁耗计算模型[J]. 中国电机工程学报, 2011, 31(3): 104-110. Jiang Shanlin, Zou Jibin, Xu Yongxiang, et al.Variable coefficient iron loss calculating model considering rotational flux and skin effect[J]. Proceedings of the CSEE, 2011, 31(3): 104-110. [14] 张艳丽, 孙小光, 白保东, 等. 晶粒无取向硅钢片取向特性分析[J]. 电工技术学报, 2013, 38(增刊2): 99-104. Zhang Yanli, Sun Xiaoguang, Bai Baodong, et al.Analysis on oriented characteristics for non-grain oriented silicon steel sheet[J]. Transactions of China Electrotechnical Society, 2013, 38(S2): 99-104.
2018, Vol. 33 
