In order for a three-phase asynchronous motor to rotate at various speeds or at the same speed in different conditions, a frequency inverter is needed to be used. There are some advantages of using frequency inverters to control the speed of asynchronous motors. Big, strong motors consume high energy. Therefore, to prevent this high energy consumption and to make the motors rotate at desired speed in every condition, panels with frequency inverters that generate various frequencies and make the motor work at a stable speed are produced. These panels work by adjusting the speed at optimum conditions as the load requires. Even the tiniest change in the speed can decrease energy consumption at significant levels. The pump runs at maximum speed at every condition when a motor driver is not used. However, when a panel with frequency control is used, energy can be saved by decreasing the speed of the pump motor in the case of water and need is decreased.
