How can a DC motor be changed into a three-phase AC motor with good performance?
Selection of asynchronous motor, power 60kW, voltage 400V, speed of only 960 RPM selectable (6 pole), if the speed is not enough to add speed (AC motor only 1500, 1000 (960), 750, 500 and several speed; if optional) must be 1000, as long as the election with step motor, just the price is too expensive.If the power supply capacity is not enough, without speed regulation, you need to calculate the starting capacity, select the starting mode and motor.The starting modes of squirrel cage asynchronous motor include direct start and star triangle startingThe above is cheaperThe starting modes of winding asynchronous motors are resistance start and frequency sensitive variable resistance starting
If the direct replacement is used, the mechanical characteristics and the service life of the motor will be directly affected. But as a technical transformation project, there are also successful cases. Priority is given to the output torque to meet the mechanical requirements, and also to match the power.
DC motor is changed to three-phase AC motor:Direct current motors and AC motors are generally unable to replace each other. This is because the DC motor and AC motor of the external characteristics of comparison, there are still very different, compare the relevant information will know.
