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1.用一台变频器起动多台电机的技术关键实际生产中,不少场所具有多台电动机。多台电动机中,有的需要调速,有的毋需调速。需要调速的电动机,如果已经应用了变频器调速,能否利用该变频器起动同一场所毋需调速的且功率与变频器相匹配的电机呢?若能实现,则可以取消传统的电机起动设备。这样,既可节约设备投资和减小配电间面积,又可节省电机起动能耗和利于电网稳定。欲实现一台变频器起动多台电动机,其关键技术是解决电动机由变频器拖动转换到由工频电网拖动的切换问题。变频器不可施加反向电压,
1. Starting a multi-motor with a frequency converter The key technical production, many places have more than one motor. Some motors, some need speed, and some do not need speed. Need to adjust the speed of the motor, if you have applied the inverter speed, the use of the inverter can start the same place without the need for speed and power and inverter matching motor? If so, you can cancel the traditional motor Start the equipment. In this way, not only can the equipment investment be reduced and the area of the power distribution can be reduced, but also the power consumption of the motor can be saved and the stability of the power grid can be saved. To achieve a starter drive more than one motor, the key technology is to solve the motor dragged by the converter converted to the power grid dragged by the switching problem. Inverter can not impose reverse voltage,