Yanzu na Turbin a Matorin Indakwama

Slip Speed a cikin Induction Motor

Ma'ana: Slip a cikin induction motor yana nufin farkon karkashin main flux da rotor speed. Yana shirya da symbol S, kuma yana rubuta a matsayin faifan karkashin synchronus. Daga tushen riyoyi, yana rubuta a haka:

Tashar wannan ya zama mai kyau ta gina tushen riyoyi ta bayyana "main flux speed" a matsayin synchronous speed (kalmomin masu sauki a fanni na electrical engineering), da kuma yadda ake rubuta ma'anar ta don ci gaba da rubutun masu ilimi. Amfani da S a matsayin symbol da take amfani a kan rubutu da kuma yadda ake bayyana "faifan" ya zama mai kyau wajen gano abin da muke so.

Faifan slip a cikin full load yana kasance daga 6% a motors mai girma zuwa 2% a motors masu yawan kayan.

Induction motor ba za a iya yi aiki a synchronous speed ba; rotor speed yana da zaman lafiya a cikin da ita ce mai girma da synchronous speed. Idan rotor speed yana daɗe ne a cikin synchronous speed, bai samu wasu aiki a cikin rotor conductors da main magnetic field. Saboda haka, bai samu electromotive force (EMF) a cikin rotor, kuma bai samu current a cikin rotor conductors ko electromagnetic torque. Saboda haka, rotor speed yana da zaman lafiya a cikin da ita ce mai girma da synchronous speed. Aiki a cikin induction motor yana nufin slip speed.

Slip speed yana nufin farkon karkashin synchronous speed da rotor speed. Kuma yana nufin karkashin rotor saboda magnetic field speed. Saboda rotor speed yana da zaman lafiya a cikin da ita ce mai girma da synchronous speed, slip speed yana gano karkashin rotor saboda field.

• Idan Ns yana nufin synchronous speed (a revolutions per minute, rpm).

• Idan Nr yana nufin rotor speed (a rpm).

Slip speed a cikin induction motor yana nuna a haka:

Karkashin synchronous speed yana nufin per-unit slip da kuma fractional slip, kuma yana amfani da symbol s.

Saboda haka, rotor speed yana nuna a cikin equation a nan:

Ko kuma, idan:

• ns yana nufin synchronous speed (a revolutions per second, rps),

• nr yana nufin rotor speed (a rps),

Faifan slip a cikin revolution per second yana nuna a haka.

Slip a cikin induction motor yana kasance daga 5% a motors mai girma zuwa 2% a motors masu yawan kayan.

Muhammanci na Slip

Slip yana da muhimmanci a cikin aiki a induction motor. Idan an tabbatar, slip speed yana nufin farkon karkashin synchronous speed da rotor speed. Wannan karkashin relative motion—i.e., slip speed—yan yi aiki a cikin induction of electromotive force (EMF) a cikin rotor. Specifically:

Rotor current yana da kusa da induced emf.

Torque yana da kusa da rotor current.