大电机绝缘结构的技术革命

Development of the insulation System of large electric machine

大电机定子绕组采用圆形电缆取代矩形线棒可以消除线棒矩形截面 4个角部的电场强度集中问题 ,并提高发电机的额定电压。这种超高压发电机直接可以不通过升压变压器 ,这是电机发展史上的一场技术革命。论文论述这种新型电机的原理、特点和研究开发情况。

Replacing the square bar by the cicular cable in the stator windings of large electric machine can eliminate the concentration of the electrical strength on the four corners of the square bar,and increase the voltage of the generator.This kind of high voltage generator can be connected directly to power system without transformer,it is a technical revolution in the history of electric machine.The article introduces the principle,speciality and development of the new type electric machine.