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极低速驱动用直流电机电刷短路系数的算法(英文)

Algorithm of brush short-circuit coeffcients of DC machines for extremely low speed drives

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【作者】 张琪谢国栋黄苏融

【Author】 ZHANG Qi, XIE Guo-dong, HUANG Su-rong School of Electromechanical Engineering and Automation, Shanghai University, Shanghai 200072, P.R.China

【机构】 School of Electromechanical Engineering and Automation, Shanghai University

【摘要】 When a direct-current(DC) machine runs at extremely low speed or standstill, the reduction in the armature resistance and the armature flux linkage due to the short circuited coils by the brushes on the commutator should not be neglected.Taking this reduction effect into account, the average values of the reduction coeffcients relate to the machine parameters in complicated forms.In this paper, an effective algorithm for the precise computation of the average values of these reduction coeffcients is proposed.Furthermore, in the algorithm, the effect of the insulation thickness between the commutator segments and the multiplicity of the wave winding are considered for the first time.The proposed algorithm can also be accommodated into the computer-aided design(CAD) of a DC machine, which normally runs at extremely low speed or standstill.

【Abstract】 When a direct-current(DC) machine runs at extremely low speed or standstill, the reduction in the armature resistance and the armature flux linkage due to the short circuited coils by the brushes on the commutator should not be neglected.Taking this reduction effect into account, the average values of the reduction coeffcients relate to the machine parameters in complicated forms.In this paper, an effective algorithm for the precise computation of the average values of these reduction coeffcients is proposed.Furthermore, in the algorithm, the effect of the insulation thickness between the commutator segments and the multiplicity of the wave winding are considered for the first time.The proposed algorithm can also be accommodated into the computer-aided design(CAD) of a DC machine, which normally runs at extremely low speed or standstill.

  • 【文献出处】 Journal of Shanghai University(English Edition) ,上海大学学报(英文版) , 编辑部邮箱 ,2008年06期
  • 【分类号】TM33
  • 【下载频次】65
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