AC motors have no commutators and are driven by alternating magnetic flux. How can AC motors be controlled to one side, and how to realize positive and negative turns?
When the AC input is turned back, it is equivalent to the original voltage +180, just to make the original super front late and late lead, because the 360 is a cycle, so when the AC input turns back, the motor reversesYou should know that the motors will stay at the 0 torque in only 1 groups. The other set of 90 degrees difference is just at the maximum torque. This torque causes him to start
The stator winding of the three-phase motor determines the direction of its rotation. The positive and negative rotation of the three-phase motor can be realized by switching any two phases of the three-phase power supply.
A sinusoidal voltage with a lead of 90 degrees or a phase of 90 degrees after a large capacitor is generatedAnd the original voltage can form a set of voltage difference of 90 degrees phase,.2 group voltage together can control its directionIf it's 90 degrees ahead, it's turning right. Then it will be reversed after 90 degrees
