论文部分内容阅读
磁轭与轮臂采用径向键固定的转子结构,为了保证在低于飞逸转速时磁轭与输臂间的预应力仍有一定的过盈,键打入时必须加热磁轭。磁轭加热的方式有铜损法、电热法、铁损法及较先进的远红外法加温等。一、各种加温方法的优劣 1.铜损法:在已挂装连接好的磁极绕组里,通入50～70％额定励磁电流,铜损使磁极绕组发热,热量传导给磁轭使磁轭温度升高产生胀量打键。优点是加温方式简单,加热磁轭与磁极干燥可以同时进行。但温度上升
The yoke and the wheel arm adopt the radial key to fix the rotor structure. In order to ensure that the prestress between the yoke and the trailing arm still has some interference below the runaway speed, the yoke must be heated when the key is driven in. Yoke heating methods are copper loss method, electric method, iron loss method and more advanced far-infrared heating method. First, a variety of heating methods of the pros and cons of 1. Copper loss method: a good connection in the magnetic pole windings, access 50% to 70% of the rated magnetizing current, copper loss so that the pole winding fever, heat conduction to the yoke Yoke temperature rise caused by the amount of expansion key. Advantages of heating method is simple, heating yoke and pole drying can be carried out at the same time. But the temperature rises