Is the motor having a variable frequency motor and a variable voltage motor?
It should be no change it is the input / output current is v frequency is its input / output frequency is M / Hz
Have. 2, variable speed control; 3, electromagnetic speed; 4, variable speed control; 5, variable resistance speed control.
Household fans are variable speed control. In addition, the DC motor can also use variable voltage to speed.
Motor with DC and AC motor, variable frequency motor and fixed frequency motor, string motor, that is, I have not heard of a transformer motor.
According to the way to start talking about a variable frequency motor and variable voltage motor
