How to synchronize two ordinary AC motors?
I'm afraid it's not easy. Ordinary AC motors are asynchronous motors. Two identical motors, when the load is exactly the same, and at the same time, it is possible to synchronize, but this synchronization is prone to damage. Personal view, for reference only.
The motor does not need to be synchronized. As long as the same type of motor on the line, the two sides automatically run at the same time into the synchronous state. As long as the load on both sides of the motor is not the same. When a motor is switched a little faster, the load of the motor is increased, the speed of the motor is slowed down automatically, the load of the other motor is reduced, and the speed of the motor is increased naturally.
Frequency converter is one of the motors, one to two motors synchronous operation, can use frequency converter input control terminal function, to achieve the two frequency converter frequency settings. That is, using the command and deceleration commands at the end of the increase, the use of buttons on and off signals to increase or decrease the set frequency. In order to connect the inverter, when the growth rate of the button is closed, the command signal growth end, increase the output frequency of the inverter according to the acceleration time, growth button to keep the inverter output frequency is turned off; when the deceleration button closed, deceleration command end signal, the output frequency of the frequency converter to reduce the deceleration time, deceleration button keep the output frequency of the inverter is disconnected. By using the method mentioned above, the system can be tuned and fine tuned with the relay, so that the synchronous control of multiple motors can be achieved.
