How to increase the speed of the fan motor?

Vadim asks:
Hello, how can I maximize the rotation speed of an electric motor from a home fan? It is desirable that the acceleration is smooth, thanks.
The answer to the question:
Hello! Most likely, some kind of asynchronous motors is used there, for example, a motor with shielded (split) poles. If so, then they are unlikely to increase their speed. Most likely this will require rewinding. In general, the speed of asynchronous motors depends more on the frequency of the supply current. Smooth acceleration, although this is wrong with respect to induction motors, but still provides a soft starter for a power tool (as it is called, look in online stores).
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