高速直流电动机改善换向性能的研究

较大功率的高转速直流电动机由于换向元件的换向时间极短，换向电势大，造成严重的换向火花。本文介绍的双整流子高速直流电动机，采用了双整流子、两套电枢绕组、互相串联的办法，解决高转速直流电动机换向困难的问题。

A Study on Improving the Performance of Pole Change of High-speed Direct-current Motor

Because the pole change time of the coil changing pole of high power hi gh-speed direct-current motor is extremely short ,the potential produced in the coil changing pole will be high. More spark will be produced during pole changin g .In this paper the author introduces a high-speed direct-current motor with do uble pole changer. It contains two pole changers. And two sets of rotor winding are in serial connection. In this way,the problem that is difficult to change th e pole of the high-speed direct-current motor is solved to a great extent.