AC induction motors - How AC motors work - Explain that Stuff - Truths

For this reason, induction motors are in some cases described as "asynchronous motors". An induction motor can be used as an induction generator, or it can be unrolled to form a linear induction motor which can straight generate direct movement.  Look At This Piece  creating mode for induction motors is made complex by the requirement to delight the rotor, which starts with just residual magnetization.

Therefore, it is required to either snap the motor and link it briefly to a live grid or to include capacitors charged at first by residual magnetism and providing the needed reactive power during operation. Comparable is the operation of the induction motor in parallel with a simultaneous motor functioning as a power factor compensator.

Then active energy is being provided to the grid. Another drawback of induction motor generator is that it consumes a significant alluring present I0 = (20-35)%. Synchronous speed [edit] An Air Conditioning motor's concurrent speed, f s \ displaystyle f _ s, is the rotation rate of the stator's magnetic field, f s = 2 f p \ displaystyle f _ s = 2f \ over p, where f \ displaystyle f is the frequency of the power supply, p \ displaystyle p is the number of magnetic poles, and f s \ displaystyle f _ s is the simultaneous speed of the maker.

For instance, for a four-pole, three-phase motor, p \ displaystyle p = 4 and n s = 120 f 4 \ displaystyle n _ s = 120f \ over 4 = 1,500 RPM (for f \ displaystyle f = 50 Hz) and 1,800 RPM (for f \ displaystyle f = 60 Hz) synchronous speed. The number of magnetic poles, p \ displaystyle p, amounts to the number of coil groups per stage.

Not known Incorrect Statements About Low-Voltage Three-Phase Induction Motors - Fuji Electric Global

The coils may cover numerous slots in the stator core, making it tedious to count them. For a 3-phase motor, if you count a total of 12 coil groups, it has 4 magnetic poles. For a 12-pole 3-phase device, there will be 36 coils. The number of magnetic poles in the rotor amounts to the variety of magnetic poles in the stator.