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由南京航空学院研制成功的“单片机控制异步电动机变频调速器”,以其技术先进、功能完善、性能稳定而倍受用户欢迎,最近被航空航天工业部列为重点推广项目。 这种调速器的功用是把380V50Hz的交流电经整流变成直流后,再经逆变器变成频率为3～100Hz的三相交流电,供给三相异步电动机以实现调速的目的。它采用单片机来完成波形发生、控制、电压反馈、显示及部分保护功能。由于单片机功能强、反应速度快、使用灵活,故只需编制及更改程序,就可方便地实现及扩展其各项功能。这种调速器的主要优点有:(1)节能,比目前广泛使用的滑差离合器调
Developed by Nanjing Aeronautical Institute of the “single-chip asynchronous motor inverter control speed,” its advanced technology, functional, stable performance and much welcomed by users, the recent Aerospace Industry Ministry as a key promotion project. The function of this governor is to 380V50Hz AC by the rectifier into a DC, then the inverter into a frequency of 3 ~ 100Hz three-phase AC, three-phase asynchronous motor supply to achieve the purpose of speed. It uses a single-chip microcomputer to complete the waveform generation, control, voltage feedback, display and partial protection. Because of the strong function of the one-chip computer, the reaction speed is quick, the use is flexible, so just need to compile and change the procedure, can realize and expand its various functions conveniently. The main advantages of this governor are: (1) energy saving, than the widely used slip clutch