Yadda yake kisan gyara na mota da take da shiga yana haifar da kyautarren?

Amsa da Zama Da Yawan Karkashin Kirkiya a Motori Synchroni

Zama da yawan karkashin kirkiya a motori synchroni yana taimakawa wajen inganta yadda ake amfani da kirkiyar mutum, musamman wajen tabbatar da kayayyakin:

1. Yanayin Kirkiyar Armature

Kirkiyar armature (kojiya kirkiyar stator) a motori synchroni na bi hukuma bi: kirkiyar aktif da kirkiyar reaktif. Wadannan suka tabbatar da kirkiyar armature mai gaba.

• Kirkiyar Aktif: Wanda yake shiga da ziyarar gida ta motori, ya kai tsari kan muhimmanci da shirin.

• Kirkiyar Reaktif: Wanda ake amfani da shi don gudanar fushen maginiti, ya kai tsari kan kirkiyar karkashin.

Idan kirkiyar karkashin yana zama, daya cikin fushen maginiti na motori yana zama, wanda yake shiga da yanayin:

Yara Kirkiyar Reaktif: Don iya ci gaba da darajar da ke faruwa a wannan fushi, an bukata motori don ya bar kirkiyar reaktif daban-daban daga gridi don in yi tasiri masu fushi. Wannan yana haɗa da yara kirkiyar armature mai gaba.

Koƙarin Kirkiya: Idan kirkiyar karkashin yana zama mafi yawa, motori zai iya shiga ciki a hali na underexcited inda yana bukata kirkiyar aktif da kuma kirkiyar reaktif mafi yawa daga gridi. Wannan zai iya haɗa da koƙarin kirkiya, yanayin hanyar voltage, ko kuma baton lura.

2. Yanayin Darajar da Ke Faruwa

Darajar da ke faruwa a motori synchroni yana nuna zama aikinsa. Darajar da ke faruwa yana iya zama ne a hali bi:

Leading Power Factor (Hali na Overexcited): Idan kirkiyar karkashin yana mafi yawa, motori yana gudanar fushi maginiti mafi yawa, wanda yake shiga da ita don bayar kirkiyar reaktif waɗanda aka sanya daga gridi, wanda yake shiga da leading power factor.

Lagging Power Factor (Hali na Underexcited): Idan kirkiyar karkashin yana zama, motori ba zan iya gudanar fushi maginiti mafi yawa, kuma zai bukata kirkiyar reaktif daga gridi, wanda yake shiga da lagging power factor.

Saboda haka, zama da yawan kirkiyar karkashin yana haɗa da darajar da ke faruwa na motori (wanda yake zama mafi lagging), wanda yake haɗa da buƙatar kirkiyar reaktif mafi yawa da yara kirkiyar mutum mai gaba.

3. Yanayin Kirkiyar Electromagnetic Torque

Kirkiyar electromagnetic torque a motori synchroni yana nuna kirkiyar karkashin da kirkiyar armature. Musamman, kirkiyar electromagnetic torque T zai iya nuna ne a haka:

idantatta:

T yana nuna kirkiyar electromagnetic torque, k yana nuna sabbin karamin, ϕ yana nuna fushi maginiti a air gap (proportional to the excitation current), Ia yana nuna kirkiyar armature.

Idan kirkiyar karkashin yana zama, fushi maginiti ϕ a air gap yana zama, wanda yake haɗa da zama da kirkiyar electromagnetic torque. Don in ci gaba da zama da kirkiyar load torque, motori zai bukata kirkiyar armature mafi yawa don in yi tasiri masu fushi. Saboda haka, zama da yawan kirkiyar karkashin yana haɗa da yara kirkiyar armature, wanda yake haɗa da yara kirkiyar mutum mai gaba.

4. Masu Baton Lura

Idan kirkiyar karkashin yana zama mafi yawa, motori zai iya shiga ciki a hali na underexcited, wanda zai iya haɗa da zama da synchronism. A wannan hali, motori ba zan iya ci gaba da synchronisation a gridi, wanda zai iya haɗa da baton lura masu elektrika da mechanical. Duk da haka, baton lura da dynamic response na motori zai zama mafi yawa a hali na underexcited.

5. Tasiri a Voltage Regulation

Motori synchroni suna iya yin regulation ga voltage na gridi tare da zama da kirkiyar karkashin. Idan kirkiyar karkashin yana zama, abin da motori yake iya bayar don support grid voltage zai zama, wanda zai iya haɗa da zama da voltage na gridi, musamman a lokacin da aka shiga da shirin.

Goromi

Zama da yawan kirkiyar karkashin a motori synchroni yana haɗa da kirkiyar mutum mai gaba a hukumar:

• Yara Kirkiyar Armature: Saboda buƙatar bar kirkiyar reaktif daban-daban daga gridi don in yi tasiri masu fushi, kirkiyar armature mai gaba yana zama.

• Zama da Darajar da Ke Faruwa: Zama da yawan kirkiyar karkashin yana haɗa da darajar da ke faruwa (wanda yake zama mafi lagging), wanda yake haɗa da buƙatar kirkiyar reaktif mafi yawa.

• Zama da Kirkiyar Electromagnetic Torque: Don in ci gaba da zama da kirkiyar load torque, motori zai bukata kirkiyar armature mafi yawa, wanda yake haɗa da yara kirkiyar mutum mai gaba.

• Zama da Baton Lura da Abin da ake Bayar Don Voltage Regulation: Kirkiyar karkashin ba tare da yawa, zai iya haɗa da zama da synchronism ko kuma baton lura na voltage.

Saboda haka, a cikin amfani da shi, yana da kyau a zama kirkiyar karkashin tare da buƙatar shirin don in bincike aiki da motori mai ma'ana da baton lura.