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Three-phase motors can be converted to PSC motors by making common two windings and connecting the third via a capacitor to act as a start winding. However, the power rating needs to be at least 50% larger than for a comparable single-phase motor due to an unused winding.[18]
However, PSC motors can experience themselves over voltage. This significance is that the voltage rating is much larger than a Shaded Pole motor. This is essential in the field of robotics for the fact that the output of the electric motor changes with the load. It is more challenging to design for this condition in robotics, but it is a major problem in robotics.
The stator of a DC motor is wound in series, giving the same resistance as a bar or ring of the rotor winding. The resistance of each phase can be added to make a multi-phase motor and each phase is connected to a power source to give a three phase motor.[23]
The natural and low heating of induction motors makes them useful as fan motors. Unnecessarily high speed motors tend to be too inefficient (or generate too much heat), and the speed is limited by the mechanical torque required. DC motors heat up so quickly that they are not mechanically suitable for fan motors unless they operate at high speeds. Unless a DC fan motor can operate at high speeds, including high speed and speed reversals, there are significant advantages to induction motors. d2c66b5586