The other method of adjusting motor speed

Speed regulation method of hydraulic couplers


Hydraulic couplers are a kind of hydraulic transmission, which is generally composed of pump wheels and turbines, which are collectively called working wheels and placed in sealed shells. When the pump wheel rotates under the prime mover, the liquid in the pump wheel rotates by the blade. When the pump wheel enters the turbine along the outer ring of the pump wheel under the action of centrifugal force, the turbine blade is thrust on the same steering so that it can drive the production machinery. The dynamic transfer capacity of hydraulic couplers is consistent with the relative liquid filling capacity in the shell. In the process of working, the turbine speed of the coupler can be changed by changing the liquid filling rate, and the stepless speed regulation can be made. This method is suitable for wind. Speed regulation of machines and pumps.


The utility model has the following characteristics. 

1, The power adaptation range is large, which can meet the needs of different power from tens of kilowatts to thousands of kilowatts. 

2, The structure is simple, the operation is reliable, the use and maintenance are convenient, and the cost is low. 

3, The size is small and the capacity is large. 

4, The control and adjustment is convenient and easy to realize automatic control.


Rotor series resistance speed regulation method of wound motor


The rotor of wound asynchronous motor series in additional resistance, so that the slip rate of motor is increased, and the motor runs at lower speed. The greater the resistance, the lower the speed of the motor. This method has the advantages of simple equipment and convenient control, but the slip power is consumed on the resistance in the form of heating. It belongs to the stage speed regulation, and the mechanical characteristic is soft.