Three-phase asynchronous motors have applicable speed adjustment methods in different occasions. Specifically, the editor of Dalan Motor will introduce seven speed adjustment methods and characteristics to you, and indicate their applicable occasions for friends to learn.
1. Variable pole logarithmic speed regulation method
This method of speed regulation is to change the number of stator pole pairs of the cage motor by changing the red connection of the stator winding. This method is suitable for production machinery that does not require stepless speed regulation, such as metal cutting machine tools, elevators, Heavy equipment, fans, water pumps, etc.
2. Frequency conversion speed regulation method
Frequency conversion speed regulation is a speed regulation method that changes the frequency of the motor stator power supply, thereby changing its synchronous speed. This method is suitable for occasions requiring high precision and good speed regulation performance.
3. Cascade speed regulation method
Cascade speed regulation means that an adjustable additional electric potential is inserted in series in the rotor circuit of the wound motor to change the slip of the motor, so as to achieve the purpose of speed regulation. The method is suitable for fans, water pumps, steel rolling mills, mine hoists, and extruders.
4. Speed ​​regulation method of rotor resistance of winding motor
The rotor of the wound asynchronous motor is connected with additional resistance, which increases the slip of the motor and the motor runs at a lower speed. This method has simple equipment and convenient control, but the slip power is consumed on the resistor in the form of heat. It is a stepped speed regulation, and the mechanical characteristics are relatively soft.
5. Stator voltage and speed regulation method
When the stator voltage of the motor is changed, a set of different mechanical characteristic curves can be obtained, thereby obtaining different speeds.
Sixth, electromagnetic speed regulation motor speed regulation method
The electromagnetic speed regulating motor is composed of three parts: a cage motor, an electromagnetic slip clutch and a DC excitation power supply (controller). This method is suitable for medium and small power production machinery that requires flat sliding and short-time low-speed operation.
Seven, hydraulic coupling speed regulation method
The hydraulic coupling is a hydraulic transmission device, generally composed of a pump wheel and a turbine. They are collectively called working wheels and are placed in a sealed housing. This method is suitable for the speed regulation of fans and pumps.
----- Responsible Editor: Dalan Oil Pump Motor 02-Procurement Consultant
Copyright http: / (Dalan Motor) Reprint, please indicate the source
================================================== ================================================== ======
Stainless Steel Barbecue Grate
Barbecue wire Grill Grate is made of high quality 304 stainless steel, never rusting and durable. BBQ Wire mesh does not have any coating or chemical ingredients, making food safer.
Multi-functional Grill Cooking Grid Grate: This wire mesh is mainly used for BBQ Grill Mat for outdoor cooking, it can also be used as a cooling and baking rack. Or you can develop other uses for it.
BBQ Grate Mesh,stainless steel wire BBQ grate,BBQ Grill Metal Mesh,stainless steel BBQ grill grate
Shenzhen Lanejoy Technology Co.,LTD , https://www.injectionnut.com