新型电动自行车直流无刷电动机的设计与控制

The Design and Control of the D.C. Motor without Coal Brushes in the New Style Electric Bicycle

对新型电动自行车的关键动力部件———直流无刷电机作了深入的剖析与设计。本文所介绍的电动自行车中使用的直流无刷电机 ,系参考英国Patscentre国际实验室协作设计产品 ,采用全电子操纵系统 ,电动自行车的最高时速可达 2 5km/h ,一次充电行程为 6 4km。该电机的功率为35 0W ,重 6kg ,具有自充电与过压过流全保护功能 ,效率可达 85 % ,性能综合指标远优于传统的以有刷电机为动力的电动自行车。

This paper intends to make a better design on the D.C. motor, the key part of the new style electric bicycle, after the detailed analysis. The D.C. motor without coal brushes is in a new style, with higher work rate, less wear and tear and lower noise. This kind of motor discussed in this paper, is designed in reference to the product designed by Patscentre International Lab, μK, which is operated with electronic system completely, in the top speed of 25km per hour, covering the distance of 64km each time it's charged. The motor is 6kg in weight, with the power of 350W, which has the function of self\|charge, and complete protection when the electric current and voltage is over the normal levels in the rate close to 85%. The comprehensive index of the functions of this kind of motor is much better than that of all the traditional ones with coal brushes.