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随着运行安全措施的改进和旅行舒适度的提高(如增加照明和采用热风采暖),对铁道车辆发电机功率的要求越来越大。为此,采用了两台同轴的交流发电机,因其转速范围较大,所以在低速时也能提供所需要的功率。这两台交流发电机的特点是,转子直接固定于传动装置的同一根蜗杆上;蜗杆的轴承用传动装置内循环的油润滑;所有绕组是静止的,所以整套机组使用寿命较长,安全可靠,保养期长或可免予维修。采取用法兰紧固发电机和蜗轮传动装置的措施,还能大大降低发电机的自重。
With the improvement of operational safety measures and the improvement of travel comfort (such as the increase of lighting and the use of hot-air heating), the power requirement of railway vehicle generators is increasing. For this purpose, two coaxial alternators are used, which provide the required power at low speeds because of their large speed range. The characteristics of these two alternators are that the rotor is directly fixed on the same worm gear of the transmission device; the worm bearing is lubricated by the oil circulated in the transmission device; all the windings are stationary, so the service life of the whole set is longer and the safety is more reliable , Long warranty or may be exempt from maintenance. Taken to use flange fastening generator and worm gear measures, but also greatly reduce the weight of the generator.