Majinta Induction na Capacitor Start
Mai suna da motoci na Capacitor Start su ne kungiyar motoci na induction mai wasu. Sun yi amfani da capacitor a cikin tushen auxiliary winding don samun farkon zama mai yawa a kan ruwan da ke ciki a kan main winding da wanda ke ciki a kan auxiliary winding. A cikin sunan "capacitor start" ya bayyana cewa motocin ya shafi capacitor musamman don yanayin hakuri. Tushen da aka bayyana a kan gabashin ya nuna hanyar canza tushen Capacitor Start Motor.
Motoci na capacitor start ta da rotor na cage kuma ta da biyu windings a kan statorri, baki daya na main winding da na auxiliary (ko starting) winding. Biyu windings su ne a kan farko masu 90 - degree. An canza capacitor, wanda an sanya CS, da starting winding a kan tsakiyar. Kuma an sami centrifugal switch, wanda an sanya SC, a kan circuit.
Phasor diagram na motoci na capacitor start ya nuna haka:
Kamar yadda ake nuna a phasor diagram, IM (main winding) ya gina lagga IA (auxiliary current) 90 degrees. Wannan ya faɗa waɗannan single - phase supply current zuwa biyu phases. Biyu windings su ne da farkon 90 degrees, kuma MMFs (magnetomotive forces) suke da ma'adoni daban-daban amma suka gina lagga 90 degrees a kan lokacin.
Saboda haka, motoci ya ci gaba da kyau da motoci na biyu phases. Idan motoci ya haɗa da kaɗarren kowace, centrifugal switch wanda ake fitowa a kan shaft na motoci ya kammala kan auxiliary winding da starting capacitor.
Tushen Motoci na Capacitor Start
Motoci na capacitor start ya da kyakkyawan haɗin yanayin hakuri, kusan 3 zuwa 4.5 daga full - load torque. Ana bukata masu kyakkyawan tushen biyu don samun wannan haɗin yanayin hakuri:
Ma'anarta starting capacitor ya kamata a duba mafi yawa.
Dabbobi na starting winding ya kamata a duba ƙara.
Ana iya amfani da electrolytic capacitors da ma'anarta kusan 250 µF saboda abubuwan Var (reactive power) da ke buƙaci.
Torque - speed characteristic na motoci ya nuna haka:
Characteristic curve ta bayyana cewa motoci na capacitor start ta da haɗin yanayin hakuri mai yawa. Amma, idan a lura da split - phase motor, kudin ya fi kawo, domin abubuwan kudin da ke faruwa a kan capacitor. Don kafofin yanayin hakuri na motoci na capacitor start, motoci ya kamata a haɓe kare, kuma an yi karfi kan tushen wata windings.
Istifanan Motoci na Capacitor Start
Motoci na capacitor start ana iya amfani a wurare dabba:
Scenarios na high - inertia da frequent - start: Ideal don loads da high inertia da ke buƙaci hakuri, domin haɗin yanayin hakurin ta za a iya haɗa da initial resistance.
Pumps da compressors: Ana iya amfani a pumps da compressors, inda haɗin yanayin hakuri mai kyakkyawa da zama ita ce muhimmanci don efficient operation.
Refrigeration da air - conditioning systems: Ana iya amfani a compressors na refrigerators da air conditioners, don ba da smooth startup da performance mai kyakkyawa don maintain cooling effect.
Conveyors da machine tools: Ana iya amfani a conveyors da machine tools, don ba da haɗin yanayin hakuri don yanayin hakuri da rike materials da components.
A cikin ƙarin bayani, motoci na capacitor start, da tushen da take da shi da istifanan da suke da shi, ta da muhimmanci a wurare electrical da mechanical systems.
