Publish Time: 2022-10-20 Origin: Site
AC motorstructure of various types of AC motors, starting methods and their respective advantages.
Here is the list
What is the information do you know about Single-phase AC motor series excitation motor?
What is the information do you know about Single-phase AC motor asynchronous motor?
What is the information do you know about Single-phase AC motor shaded pole motor?
① Motor structure
Rotor + Stator.
②Startup method
Like a DC motor, it can be powered on to run.
③ Reversing method
Change stator/rotor coil connections.
④Speed control method
Adjust the speed by adjusting the voltage.
⑤ Advantages
This motor can be an AC motor or a DC motor, and has the characteristics of high speed, large starting torque, small size, light weight, not easy to stall, and a wide range of applicable voltages. Many advantages are similar to DC motors.
① Motor structure
rotor (squirrel cage);
Stator: running winding, starting winding.
②Start
There are 3 ways to start this motor:
(a) The starting winding of the motor participates in the operation, and the running speed is kept at a fixed value;
(b) The starting winding of the motor is not involved in operation. After starting, the centrifugal switch disconnects the starting winding, but the motor continues to work with the running winding coil;
(c) The starting winding of the motor is connected in series with a large-capacity AC motor to start, and after starting, it is connected in series with a small-capacity AC motor to run.
③ Reversing method
A single-phase motor has two sets of coils, one common end, one running end, and one starting end, and a capacitor AC motor is connected between the running end and the starting end.
(a) When the power supply is connected to the common terminal and the running terminal, the motor rotates forward;
(b) When the power supply is connected to the common terminal and the start terminal, the motor reverses;
Only a single-phase reversible motor with the same cross-sectional area of the running coil and the starting coil can forward and reverse, otherwise the reverse cannot carry a load
④Speedcontrol method
(a) Speed regulation of series reAC motors;
(b) Internal tap speed regulation of motor winding;
(c) AC motor thyristor speed regulation;
(d) Frequency converter speed regulation;
(e) Pole-changing speed regulation.
⑤ Advantages
Generally, the DC resistance of the running winding is several Ω, while the DC resistance of the starting winding is ten Ω to several tens of Ω.
① Motor structure
Squirrel cage rotor;
Stator: Running winding, blocking circuit.
②Start
Power up to rotate.
③ Reversing method
No transfers.
④Speed control method
Voltage regulation and speed regulation.
⑤ Advantages
According to the different shape and structure of the stator, the AC motor is divided into a salient-pole shaded-pole motor and a hidden-pole shaded-pole motor.
① Motor structure
Squirrel cage rotor;
Stator: large winding + small winding.
②Start
Power up to rotate.
③ Reversing method
Change the direction of the AC motor with the main winding or auxiliary winding of the stator commutated.
④Speed control method
Unable to adjust speed.
① Motor structure
Squirrel cage rotor;
Stator: Winding.
②Start
Star-delta start, step-down start.
③ Reversing method
Swap the wiring of any two connectors in the three phases of the stator.
④Speed control method
Speed adjustment is difficult.
⑤ Advantages
The rotating magnetic fields of the rotor and stator of the motor rotate in the same direction, and the rotational speed is different, and there is a slip rate. The rotational speed of the motor rotor is lower than the rotational speed of the rotating magnetic field. The rotor winding generates electromotive force and current due to the relative movement of the rotor and the magnetic field, and interacts with the magnetic field to generate electromagnetic torque and realize energy conversion. The downside is that it's hard to adjust the speed.
Hangzhou New Hengli Electric Machine MFG. Co., Ltd. (Originally Hangzhou Hengli Electric Machine MFG. Co., Ltd.) was founded in 1954. Over 68 years of manufacturing experience in kinds of DC & AC Motors built up the customer-centered product development methodology and do under the special requirements of customers.