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一九七三年我们曾进行了异步电机同步化的试验。试验表明:同步化能够有效地补偿无功功率,提高功率因数。但由于励磁环节采用了三相桥式硅元件整流,当电网电压向下波动时,转子励磁电流减少,往往使电机运行在不稳定区,失步现象经常发生。尤其当电网电压过低时,同步根本不能运行。伟大领袖毛屯席教导我们:“我们必须打破常规,尽量采用先进技术,在一个不太长
In 1973 we conducted a test of asynchronous motor synchronization. Experiments show that synchronization can effectively compensate reactive power and improve power factor. However, due to the excitation part of the three-phase bridge rectifier silicon components, when the grid voltage fluctuations down, the rotor excitation current decreases, the motor is often running in unstable areas, out of synchronization often occur. Especially when the grid voltage is too low, the synchronization can not run at all. The great leader Mao Tunxi taught us: "We must break the routine, try to adopt advanced technology, in a not too long