【作者】 王伟平； 陈小林； 黎明；

【Author】 Wang Weiping, Chen Xiaolin, Li Ming

【机构】 长沙理工大学电气与信息工程学院； 湖南省电力公司；

【摘要】 通过对三相异步电动机机械特性曲线的分析,并结合机械特性函数表达式的推导,提出当三相异步电动机在转差率S很小的范围内运行时,由于电磁转矩与转差率近似或正比,可以用一种简易方法——比较斜率法,来求解转速和转矩。经过与公式法的比较,能得到较为准确的计算结果。且转差率S愈小,其误差也愈小。更多还原

【Abstract】 By way of the analysis to the mechanical specific property curve of three-phase asynchronous motor, Combine the derivation of the mechanical specific property function type expressed, we should put forward when the three-phase asynchronous generator moves in the revolution scope that the slip is very small, owing to the fact that the electromagnetic torque with turning the approximate one-tenth direct ratio of slip, one kind of simple and easy method-comparison slope law can be used to find the solution the rotational speed and torque. The comparison of process and formula law, the comparatively accurate calculation result can be got. It is smaller just to turn the slip, and his error is also small.更多还原