The way to increase the speed of an electric motor depends on its type, as well as on the field of application of the motor. It may consist in changing the parameters of the power supply or the load on the motor shaft.
Instructions
Step 1
If the electric motor is a collector motor, to increase its speed, either increase the supply voltage or reduce the load on the shaft. But remember that, firstly, the power generated by the engine should in no case exceed that for which it is designed. And secondly, that many collector electric motors, especially with sequential excitation, when operating without load at all, without reducing the supply voltage, accelerate to unacceptably high speeds. Both that, and another threaten the failure of the motor. Bypassing the excitation winding is a way to increase the speed, which is not always allowed to be resorted to - this threatens to severely overheat the engine.
Step 2
Motors with electronically controlled windings, which use feedback, are often very close in properties to collector ones - except that they do not allow reverse polarity reversal. If your existing electronic motor has these properties, try increasing its speed using the method indicated in the previous step, while all the restrictions indicated there also apply to this type of electric motor.
Step 3
The frequency of rotation of an asynchronous electric motor supplied directly from the mains can also be regulated by changing the supply voltage. But this method is extremely ineffective: the dependence of speed on voltage is very nonlinear, the efficiency varies greatly. For motors of a synchronous type, this method is completely unsuitable. Therefore, it is better to use a so-called three-phase inverter. It allows you to adjust the speed of not only asynchronous, but also synchronous electric motors by changing the frequency. Select a device of such a type that it provides a simultaneous decrease in voltage as the frequency decreases, in order to take into account the decrease in the inductive resistance of the windings. There are inverters for single-phase magnetic shunt motors as well as two-phase capacitor motors.
