Matsakaicin saurin injin tukin mota galibi yana da faɗi sosai, amma kwanan nan na haɗu da aikin abin hawa injiniyoyi kuma na ji cewa buƙatun abokin ciniki suna da matuƙar buƙata.Bai dace a faɗi takamaiman bayanai anan ba. Gabaɗaya magana, ƙarfin da aka ƙididdige shi shine kilowatts ɗari da yawa, saurin da aka ƙididdige shi shine n (N), kuma matsakaicin saurin n (max) na koyaushe yana kusan sau 3.6 fiye da n (N); ba a tantance motar a mafi girman gudu ba. iko, wanda ba a tattauna a wannan labarin ba.
Hanyar da aka saba ita ce ƙara saurin ƙididdigewa daidai, ta yadda kewayon saurin saurin wutar lantarki ya zama ƙarami.Rashin hasara shi ne cewa ƙarfin lantarki a ainihin ma'aunin saurin da aka ƙididdige shi yana raguwa kuma na yanzu ya zama mafi girma; duk da haka, idan aka yi la'akari da cewa halin yanzu na abin hawa ya fi girma a ƙananan gudu da kuma babban juzu'i, an yarda da shi gaba ɗaya don matsawa ma'aunin saurin gudu kamar wannan.Duk da haka, yana iya zama cewa masana'antar mota ta kasance mai rikitarwa. Abokin ciniki yana buƙatar cewa halin yanzu ya kamata ya zama ainihin canzawa a cikin kewayon wutar lantarki akai-akai, don haka dole muyi la'akari da wasu hanyoyin.
Abu na farko da ya zo a hankali shi ne cewa tunda ikon fitarwa ba zai iya isa ga ƙarfin da aka ƙididdigewa ba bayan ya wuce matsakaicin madaidaicin madaidaicin madaidaicin madaidaicin wutar lantarki, to muna rage ƙarfin ƙarfin da ya dace, kuma n (max) zai ƙaru (yana ji). kamar dan wasan NBA “ba zai iya doke Just join”, ko kuma tunda ka fadi jarrabawar da maki 58, sannan ka saita layin wucewa a maki 50), wannan shine kara karfin injin don inganta saurin gudu.Misali, idan muka ƙirƙira motar 100kW, sannan muka sanya alamar da aka ƙima a matsayin 50kW, shin ba za a inganta kewayon wutar da akai-akai ba?Idan 100kW zai iya wuce gudun da sau 2, ba matsala don wuce gudun da akalla sau 3 a 50kW.
Tabbas, wannan ra'ayin na iya zama kawai a matakin tunani.Kowa ya san cewa yawan injinan da ake amfani da su a cikin motoci yana da iyaka sosai, kuma kusan babu wurin da za a iya amfani da wutar lantarki mai yawa, kuma kula da farashi yana da matukar muhimmanci.Don haka wannan hanya har yanzu ba za ta iya magance ainihin matsalar ba.
Bari mu yi la'akari da gaske ma'anar wannan juzu'i.A n (max), matsakaicin ƙarfi shine ƙarfin da aka ƙididdigewa, wato, matsakaicin maɗaukakiyar jujjuyawar k(T) = 1.0; idan k (T)> 1.0 a wani wuri mai sauri, yana nufin yana da ƙarfin faɗaɗa wutar lantarki akai-akai.Don haka shin gaskiya ne cewa mafi girma k(T) shine, ƙarfin haɓaka saurin haɓaka shine?Muddin k (T) a aya n (N) na gudun da aka ƙididdige an ƙirƙira shi da girma sosai, za a iya gamsuwa da kewayon saurin saurin wutar lantarki na sau 3.6?
Lokacin da aka ƙayyade ƙarfin lantarki, idan reactance reactance ya kasance baya canzawa, matsakaicin ƙarfin juzu'i ya bambanta da gudun, kuma matsakaicin ƙarfin yana raguwa yayin da saurin ya karu; a gaskiya ma, reactance leakage shima yana canzawa tare da saurin, wanda za'a tattauna daga baya.
Ƙarfin da aka ƙididdige (ƙarfin motsi) na motar yana da alaƙa da alaƙa da abubuwa daban-daban kamar matakin rufewa da yanayin zubar da zafi. Gabaɗaya, matsakaicin ƙarfin juzu'i shine sau 2 ~ 2.5 wanda aka kimanta, wato, k(T)≈2 ~ 2.5. Yayin da ƙarfin motar ke ƙaruwa, k(T) yana ƙoƙarin raguwa.Lokacin da aka ci gaba da ci gaba da ƙarfi a gudun n (N) ~ n (max), bisa ga T = 9550 * P / n, dangantakar da ke tsakanin maɗaukakiyar maɗaukaki da gudun kuma yana da bambanci.Don haka, idan (lura cewa wannan shine yanayin da ba a iya gani ba) reactance leakage bai canza tare da saurin ba, matsakaicin madaidaicin mahara k (T) ya kasance baya canzawa.
A zahiri, duk mun san cewa reactance daidai yake da samfurin inductance da saurin kusurwa.Bayan an kammala motar, inductance (leakage inductance) ya kusan canzawa; saurin motar yana ƙaruwa, kuma ɗigowar reactance na stator da rotor yana ƙaruwa daidai gwargwado, don haka saurin da matsakaicin ƙarfin juyi ya ragu yana da sauri fiye da ƙimar ƙimar.Har zuwa n (max), k (T) = 1.0.
An yi magana da yawa a sama, kawai don bayyana cewa lokacin da ƙarfin lantarki ya kasance akai-akai, tsarin haɓaka saurin shine tsarin kT yana raguwa a hankali.Idan kuna son ƙara yawan kewayon saurin wutar lantarki akai-akai, kuna buƙatar ƙara k(T) a ƙimar ƙimar.Misalin n (max)/n (N)=3.6 a cikin wannan labarin baya nufin cewa k(T)=3.6 ya wadatar a madaidaicin gudu.Saboda asarar gogayya ta iska da asarar baƙin ƙarfe sun fi girma a babban gudu, ana buƙatar k (T)≥3.7.
Matsakaicin juzu'in yana da kusan sabanin daidai da jimlar stator da reactance reactance na rotor, wato
1. Rage adadin conductors a jerin ga kowane lokaci na stator ko tsawon na baƙin ƙarfe core yana da matukar tasiri ga leakage reactance na stator da rotor, kuma ya kamata a ba da fifiko;
2. Ƙara yawan stator ramummuka da kuma rage takamaiman yayyo permeance na stator ramummuka (ƙarshen, harmonics), wanda yake da tasiri ga stator yayyo reactance, amma ya ƙunshi da yawa masana'antu tafiyar matakai da kuma iya shafar sauran wasanni, don haka shi ne shawarar ya zama. mai hankali;
3. Don yawancin rotors nau'in keji da aka yi amfani da su, ƙara yawan adadin ramukan rotor da rage ƙayyadaddun ƙayyadaddun ƙayyadaddun ƙayyadaddun na'ura mai juyi (musamman ƙayyadaddun ƙayyadaddun ƙayyadaddun ƙayyadaddun ramukan rotor) yana da tasiri don amsawar rotor kuma ana iya amfani da shi gabaɗaya.
Don ƙayyadaddun ƙirar ƙididdiga, da fatan za a koma zuwa littafin rubutu "Motor Design", wanda ba za a sake maimaita shi anan ba.
Matsakaici da manyan injuna yawanci suna da ƴan juyi kaɗan, kuma ƴan gyare-gyare suna da tasiri sosai akan aiki, don haka daidaitawa daga ɓangaren rotor ya fi yiwuwa.A gefe guda, don rage tasirin karuwar mitar akan ainihin asara, yawanci ana amfani da zanen ƙarfe na siliki mafi ƙarancin siliki.
Dangane da tsarin ƙirar ra'ayin da ke sama, ƙimar ƙididdiga ta kai ga buƙatun fasaha na abokin ciniki.
PS: Yi haƙuri don alamar ruwa ta asusun asusun da ke rufe wasu haruffa a cikin dabarar.Abin farin ciki, waɗannan dabarun suna da sauƙin samuwa a cikin "Electrical Engineering" da "Motor Design", Ina fata ba zai shafi karatun ku ba.
Lokacin aikawa: Maris 13-2023