| 分瓣电刷在试验机组直流电机中的应用 |
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| 引用本文： | 陈万庆,王军伟.分瓣电刷在试验机组直流电机中的应用[J].航空动力学报,2017,44(6):97-100. |
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| 作者姓名： | 陈万庆 王军伟 |
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| 作者单位： | 兰州电机股份有限公司,甘肃 兰州730050,兰州电机股份有限公司,甘肃 兰州730050 |
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| 摘 要： | 直流电机的容量越大,相对的电枢电流也就越大。设计上,大电流直流电机的绕组形式通常采用双蛙绕组,这种绕组结构形式相对复杂,影响换向的因素较多。以一台试验机组直流电机使用不同电阻率的电刷进行无火花换区测试,试验结果对比分析表明:使用高电阻率的分瓣电刷可以增大电刷横向电阻,从而减小流过换向元件的短路环流,消除刷下火花,改善电机换向。同时,电刷采用切向错位排列有助于降低换向元件的电抗电势,从而更好地改善电机的换向性能。
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| 关 键 词： | 试验机组 分瓣电刷 对比分析 改善换向 |
Application of Split Brush in DC Motor of Test Set |
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| CHEN Wanqing and WANG Junwei.Application of Split Brush in DC Motor of Test Set[J].Journal of Aerospace Power,2017,44(6):97-100. |
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| Authors: | CHEN Wanqing and WANG Junwei |
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| Affiliation: | Lanzhou Electric Corporation, Lanzhou 730050, China and Lanzhou Electric Corporation, Lanzhou 730050, China |
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| Abstract: | The larger capacity of the DC motor, the greater relative armature current. In design, the winding form of high current DC motor usually adopts the double frog winding, and this kind of winding structure is relatively complicated, and there are many factors that affect the commutation ability of the DC motor. By using a brush with different resistivity to make sparkless commutation test in DC motor of test set, and based on comparative analysis on the test results, showed the facts that the split brush could increase the lateral resistance by using high resistivity brush, thereby the short circuit circulation of commutating winding was reduced, and brush spark was eliminated, and motor commutation was improved. At the same time, the tangential dislocation array of the brush was helpful to reduce the reactance electric potential of the commutating winding; therefore, the commutation performance of the motor was greatly improved. |
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| Keywords: | test set split brush comparative analysis improve commutation |
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