Matsayin dandano na rotor wanda ya bambanta da stator a motori na induksi yana iya kasancewa?

Yadda rotor poles da Induction motors yana da shi kamar yadda stator poles ne, saboda hanyar kaɗanta Motor yana nemanar da ingancin kaɗan magnetic field wanda an yi shi daga mu'amala ta stator da rotor. Wannan bayyana cikakken tushen da yadda rotor poles na da shi kamar yadda stator poles, kuma yana neman da za su iya zama da abubuwa a yi gaba-gaban yadda poles na da shi don inganta baƙin motor.

Daga baka yadda ya da shi kamar yadda rotor poles da stator poles?

Magnetic field synchroni

• Stator winding: Ingancin magnetic field wanda an yi shi daga stator winding yana da shi kamar yadda poles, umma yana da yadda pairs (wato 2-pole pairs, 4-pole equivalents).

• Rotor winding: Don haka rotor yana iya jirgi da magnetic field ta stator, rotor yana bukata da shi kamar yadda poles don haka zai iya synchronize da magnetic field ta stator don samun electromagnetic torque da shi daidai.

Torque generation

• Induced current: Idan stator ya yi ingancin magnetic field, zai kasance current a rotor, kuma magnetic field wanda an yi shi daga wannan currents a rotor yana yi mu'amala da magnetic field ta stator don samun torque.

• Pole matching: Kawai idan rotor poles na da shi kamar yadda stator poles zai iya synchronize magnetic field ta rotor da magnetic field ta stator, kuma zai iya samun torque da shi daidai.

Slip rate

• Synchronous speed: Synchronous speed ns ta motor yana da shi kamar yadda pole number p da power supply frequency f, yana nufin ns= 120f/ p

• Actual speed: actual speed n ta rotor yana da shi daɗi da synchronous speed, kuma ratio ta farkon da synchronous speed yana nufin slip rate s.Yana nufin s= (ns−n)/ns.

Za su iya inganta baƙin a yi gaba-gaban poles?

Ingancin gaba-gaban polar

• Magnetic field asymmetry: Idan rotor poles ba da shi kamar yadda stator poles, zai iya haɗaɗe magnetic field asymmetry, wanda zai iya tabbatar da kaɗan ta motor.

• Torque fluctuation: Pole mismatch zai iya haɗaɗe torque fluctuation to increase, motor operation yana da shi daidai, ko kuma ba zai iya faru ko run daidai.

Impact baƙin

• Reduced efficiency: Pole mismatches zai iya haɗaɗe motor efficiency because of reduced energy conversion efficiency.

• Noise and vibration: Asymmetrical magnetic fields zai iya haɗaɗe motor to produce additional noise and vibration, affecting the service life of the equipment.

Other considerations

• Design flexibility: A cikin wasu designs masu ma'ana, wato two-speed motors, yadda poles na da shi zai iya canzawa da changing the connection of the stator windings don samun different speeds. Amma wannan yana da shi a lokacin da design, ba sa random changing the number of poles ba.

• Types of motors: Wasu types of motors (wato permanent magnet synchronous motors) zai iya da combinations of poles masu ma'ana, amma waɗannan suna da shi don specific application purposes.

Sum up

Yadda rotor poles da Induction motor yana da shi kamar yadda stator poles, wanda yake da shi don haka rotor zai iya jirgi synchronously da magnetic field ta stator, zai iya samun electromagnetic torque da shi daidai. Idan yadda poles na da shi gaba-gaban (wato yadda poles na da shi canzawa), magnetic field zai iya haɗaɗe asymmetrical, torque fluctuation zai iya haɗaɗe, motor efficiency zai iya haɗaɗe, kuma zai iya haɗaɗe additional noise and vibration. Saboda haka, gaba-gaban yadda poles ba zai iya inganta baƙin motor, amma zai iya haɗaɗe motor ba zai iya faru daidai. A cikin applications, any modification of the motor pole number should be carried out under the guidance of professionals and ensure that it meets the design requirements of the motor.