Motoci Iwakawaƙa Ta Hanyar Induction

Kisan gaba na Motorin Induction

An yi amfani da motorin induction a cikin wasu tushen. Amfani da kisan gaba na motorin induction yana da rike, wanda ya haifar da amfani da su a lokacin, inda an zama da muhimmanci waɗannan da suke da motorin DC. Amma, bayan samun canza ta hanyar kisan gaba na motorin induction, an samu muhimmancin da suke da motorin DC. Kisan gaba yana da muhimmanci wajen kula da motor, kuma ana iya kisan gaba da motorin induction tare da wasu hanyoyi, kamar:

• Regenerative braking of induction motor

• Plugging Braking of induction motor

Dynamic braking of induction motor is further categorized as

• AC dynamic breaking

• Self excited braking using capacitors

• DC dynamic braking

• Zero Sequence braking

Regenerative Braking

Na sani cewa zara (input) na motorin induction take jin.

Pin = 3VIscosφs

A nan, φs ita ce farkon lokaci daga V zuwa Is. Daga baya, don fadada φs < 90o kuma don kisan gaba φs > 90o. Idan kiwo na motor yana da ƙarin da kiwo na synchronous, idan kiwo na tsari da air gap rotating field yake gaba, saboda haka farkon lokaci yake da ƙarin da 90o kuma zara take gaba, kuma regenerative braking yake faru. Nau'o'in speed torque curves suna nuna a tasiri. Idan frequency na mai muhimmanci yana da rike, regenerative braking of induction motor zai faru idan kiwo na motor yana da ƙarin da kiwo na synchronous, amma idan frequency na mai muhimmanci yana da ƙarin, regenerative braking of induction motor zai faru idan kiwo na motor yana da ƙarin da kiwo na synchronous. Muhimmancin da ke cika ne wannan nau'o'in kisan gaba shine cewa zara da aka gina yana da amfani, kuma matsalolin da ke cika shine cewa don frequency na mai muhimmanci, ba zai iya kisan gaba da kiwo na synchronous.

Plugging Braking

Plugging induction motor braking yana da shi ne tare da gaba tsari na motor. Plugging braking of induction motor yana da shi ne tare da kawo mafi girman phase daga stator zuwa supply terminals. Saboda haka, fadada yana gaba zuwa plugging braking. A cikin plugging, slip yana da (2 – s), idan slip na motor da ke ciki shine s, maka yana iya nuna hakan haka.

Daga tasirin, ana iya nuna cewa torque ba zero ba a lokacin kiwo zero. Saboda haka, idan an bukata a stop motor, yana da shi ne tare da kawo mafi girman supply a lokacin kiwo zero. An kawo motor zuwa mutum min karfin, kuma torque ba zero ba a kiwo zero ko a lokacin da ke ciki, kuma saboda haka, motor yana haifar da kiwo zuwa zero, kuma yana haifar da kiwo zuwa karfin musamman.

AC Dynamic Braking

Yana da shi ne tare da kawo mafi girman phase, tare da kawo mafi girman motor zuwa single phase, tare da kisan gaba torque saboda positive and negative sequence voltages.

Self Excited Braking

Yana amfani da capacitors don excite motor idan an kawo mafi girman source, tare da kisan gaba torque.