Dizilo Jenereta Set Imagwirizana Ndi UPS

Nkhaniyi ikuwunika ndikufotokozera momwe UPS imakhudzira mphamvu yamagetsi ndi zosefera pa jenereta yamagetsi pofuna kumveketsa bwino chomwe chayambitsa vutoli, ndiyeno kupeza yankho.

1. Kugwirizana pakati pa jenereta ya dizilo ndi UPS.

Opanga ndi ogwiritsa ntchito magetsi osasunthika akhala akuwona zovuta zolumikizana pakati pa ma jenereta ndi UPS, makamaka ma harmonics omwe amapangidwa ndi okonzanso amapangidwa pamakina opangira magetsi monga owongolera magetsi a seti ya jenereta ndi mabwalo olumikizana a UPS.Zotsatira zoyipa za izi ndi zowonekeratu.Chifukwa chake, akatswiri opanga makina a UPS adapanga zosefera zolowera ndikuziyika ku UPS, ndikuwongolera bwino ma harmonics omwe alipo mu pulogalamu ya UPS.Zosefera izi zimagwira ntchito yofunika kwambiri pakulumikizana kwa UPS ndi seti ya jenereta.

Pafupifupi zosefera zonse zimagwiritsa ntchito ma capacitor ndi ma inductors kuti azitha kuyamwa ma harmonics omwe amawononga kwambiri pakulowetsa kwa UPS.Mapangidwe a fyuluta yolowera amaganizira kuchuluka kwa kupotoza kokwanira kwa harmonic komwe kumachitika mudera la UPS komanso kudzaza kwathunthu.Phindu lina la zosefera zambiri ndikuwongolera mphamvu zolowetsa za UPS yodzaza.Komabe, chotsatira china chakugwiritsa ntchito fyuluta yolowetsa ndikuchepetsa mphamvu zonse za UPS.Zosefera zambiri zimadya pafupifupi 1% ya mphamvu za UPS.Kapangidwe kazosefera zolowetsa nthawi zonse kumafuna kukhazikika pakati pa zinthu zabwino ndi zoyipa.

Pofuna kupititsa patsogolo luso la dongosolo la UPS momwe angathere, mainjiniya a UPS asintha posachedwapa pakugwiritsa ntchito mphamvu zosefera zolowetsa.Kuchita bwino kwa zosefera kumatengera kugwiritsa ntchito ukadaulo wa IGBT (Insulated Gate Transistor) pakupanga kwa UPS.Kuchita bwino kwambiri kwa inverter ya IGBT kwapangitsa kuti UPS ipangidwenso.Zosefera zolowetsa zimatha kuyamwa ma harmonics apano pomwe zimatenga gawo laling'ono la mphamvu yogwira.Mwachidule, chiŵerengero cha inductive factor to capacitive factor mu fyuluta imachepetsedwa, kuchuluka kwa UPS kumachepetsedwa, ndipo magwiridwe antchito amawongoleredwa.Zinthu zomwe zili m'munda wa UPS zikuwoneka kuti zathetsedwa, koma kugwirizana kwa vuto latsopano ndi jenereta kwawonekeranso, m'malo mwa vuto lakale.

2. Vuto la resonance.

Vuto la capacitor self-excitation likhoza kukulirakulira kapena kubisika ndi zinthu zina zamagetsi, monga mndandanda wa resonance.Pamene mtengo wa ohmic wa mphamvu yamagetsi ya jenereta ndi mtengo wa ohmic wa capacitive capacitive reactance yolowetsayo ili pafupi wina ndi mzake, ndipo mtengo wotsutsa wa dongosolo ndi wochepa, oscillation idzachitika, ndipo voteji ikhoza kupitirira mtengo wovotera wa mphamvu. dongosolo.Dongosolo lopangidwa kumene la UPS kwenikweni ndi 100% capacitive input impedance.A 500kVA UPS ikhoza kukhala ndi capacitance ya 150kvar ndi mphamvu yapafupi ndi ziro.Ma shunt inductors, choke chamndandanda, ndi zosinthira zodzipatula ndizinthu wamba za UPS, ndipo zigawo zonsezi ndizopatsa chidwi.M'malo mwake, iwo ndi kuthekera kwa fyuluta palimodzi kumapangitsa UPS kukhala ngati capacitive yonse, ndipo pakhoza kukhala kale ma oscillations mkati mwa UPS.Kuphatikizidwa ndi mawonekedwe a capacitive a mizere yamagetsi yolumikizidwa ndi UPS, zovuta za dongosolo lonselo zimachulukitsidwa kwambiri, kupitilira kuwunika kwa akatswiri wamba.

3. Dizilo jenereta seti ndi katundu.

Jenereta ya dizilo imadalira chowongolera magetsi kuti chiwongolere voteji.Voltage regulator imazindikira kuchuluka kwa magawo atatu ndikuyerekeza mtengo wake wapakati ndi mtengo wofunikira.Woyang'anira amapeza mphamvu kuchokera ku gwero lamphamvu lothandizira mkati mwa jenereta, nthawi zambiri jenereta yaying'ono yokhala ndi jenereta yayikulu, ndipo imatumiza mphamvu ya DC kupita ku maginito osangalatsa a rotor ya jenereta.Mphamvu ya koyilo imakwera kapena kutsika kuti ilamulire mphamvu ya maginito yozungulira jenereta stator koyilo , kapena kukula kwa mphamvu ya electromotive EMF.Kuthamanga kwa maginito kwa koyilo ya stator kumatsimikizira mphamvu yamagetsi ya jenereta.

Kukaniza kwamkati kwa koyilo ya stator ya seti ya jenereta ya dizilo imayimiridwa ndi Z, kuphatikiza magawo ochititsa chidwi komanso oletsa;mphamvu ya electromotive ya jenereta yoyendetsedwa ndi koyilo yokokera yozungulira imayimiridwa ndi E ndi gwero lamagetsi la AC.Pongoganiza kuti katunduyo ndi wosavuta, Imatsitsa voteji U ndi ndendende 90 ° gawo lamagetsi lamagetsi pazithunzi za vector.Ngati katunduyo ali wosasunthika, ma vector a U ndi ine tidzagwirizana kapena kukhala gawo.M'malo mwake, zolemetsa zambiri zimakhala pakati pa zotsutsa komanso zongowonjezera.Kutsika kwamagetsi komwe kumachitika chifukwa chakudutsa pa stator koyilo kumayimiridwa ndi voteji yamagetsi I× Z.Kwenikweni ndi kuchuluka kwa ma vector ang'onoang'ono ang'onoang'ono amagetsi, kutsika kwamagetsi mu gawo limodzi ndi I ndi inductor voltage kutsika 90 ° patsogolo.Pachifukwa ichi, zimakhala mu gawo ndi U. Chifukwa mphamvu ya electromotive iyenera kukhala yofanana ndi kuchuluka kwa kutsika kwa voteji ya kukana kwa mkati mwa jenereta ndi mphamvu yamagetsi, ndiko kuti, kuchuluka kwa vector kwa vekitala E = U ndi Ine ×Z.Magetsi owongolera amatha kuwongolera voteji U posintha E.

Tsopano ganizirani zomwe zimachitika mkati mwa jenereta pamene katundu wa capacitive amagwiritsidwa ntchito m'malo mwa katundu wochititsa chidwi.Zomwe zilipo panthawiyi ndizosiyana kwambiri ndi katundu wochititsa chidwi.Panopa ine tsopano amatsogolera voteji vekitala U, ndi mkati kukana voteji dontho vekitala I× Z nayenso mu gawo losiyana.Kenako mavekita a U ndi I×Z ndi ocheperapo U.

Popeza mphamvu yomweyo ya electromotive E monga mu katundu wochititsa chidwi imapanga jenereta yapamwamba yotulutsa voteji U mu capacitive katundu, chowongolera voteji chiyenera kuchepetsa kwambiri mphamvu yozungulira maginito.M'malo mwake, chowongolera chamagetsi sichingakhale ndi kuchuluka kokwanira kuti chiwongolere bwino mphamvu yamagetsi.Ma rotor a majenereta onse amasangalala mosalekeza mbali imodzi ndipo amakhala ndi mphamvu yamagetsi yokhazikika.Ngakhale magetsi atsekedwa kwathunthu, rotor imakhalabe ndi mphamvu ya maginito yokwanira kuti iwononge capacitive katundu ndi kupanga magetsi.Chodabwitsa ichi chimatchedwa "self-excitation".Chotsatira cha kudzikonda excitation ndi overvoltage kapena shutdown wa voteji regulator, ndi jenereta kuyang'anira dongosolo amaona kuti kulephera kwa voteji regulator (ie, "kutaya chisangalalo").Iliyonse mwa mikhalidwe iyi ipangitsa jenereta kuyimitsa.Katundu wolumikizidwa ndi kutulutsa kwa jenereta ukhoza kukhala wodziyimira pawokha kapena wofanana, kutengera nthawi ndi kukhazikitsidwa kwa kabati yosinthira yokha.Muzinthu zina, dongosolo la UPS ndilo katundu woyamba wolumikizidwa ndi jenereta panthawi ya kulephera kwa magetsi.Nthawi zina, UPS ndi katundu wamakina amalumikizidwa nthawi imodzi.The makina katundu zambiri ali ndi chiyambi contactor, ndipo zimatenga nthawi kuti reclose pambuyo kulephera mphamvu.Pali kuchedwa pakulipiritsa katundu wolowetsa injini ya UPS input filter capacitor.UPS yokha ili ndi nthawi yotchedwa "soft start", yomwe imasuntha katundu kuchokera ku batri kupita ku jenereta kuti iwonjezere mphamvu yake yolowera.Komabe, zosefera za UPS sizitenga nawo gawo poyambira mofewa.Amalumikizidwa kumapeto kwa UPS ngati gawo la UPS.Chifukwa chake, nthawi zina, katundu wamkulu woyamba kulumikizidwa ndi kutulutsa kwa jenereta pakulephera kwamagetsi ndiye fyuluta yolowera ya UPS.Iwo ali okhoza kwambiri (nthawi zina capacitive).

Njira yothetsera vutoli mwachiwonekere ndikugwiritsa ntchito mphamvu yokonza mphamvu.Pali njira zambiri zokwaniritsira izi, pafupifupi motere:

1. Ikani kabati yosinthira yokha kuti mupangitse katundu wagalimoto alumikizike pamaso pa UPS.Makabati ena osinthira sangathe kugwiritsa ntchito njirayi.Kuphatikiza apo, pakukonza, mainjiniya opangira mbewu angafunikire kukonza padera UPS ndi ma jenereta.

2. Onjezani reactance yokhazikika kuti mubweze katundu wa capacitive, nthawi zambiri pogwiritsa ntchito cholumikizira cholumikizira cholumikizira, cholumikizidwa ndi bolodi la EG kapena jenereta.Izi ndizosavuta kukwaniritsa, ndipo mtengo wake ndi wotsika.Koma ziribe kanthu kulemera kwakukulu kapena kulemedwa kochepa, riyakitala nthawi zonse imagwira ntchito zamakono komanso zimakhudza mphamvu ya katundu.Ndipo mosasamala za kuchuluka kwa UPS, kuchuluka kwa ma reactors kumakhazikika nthawi zonse.

3. Ikani riyakitala yochititsa chidwi mu UPS iliyonse kuti mungobwezera mphamvu ya UPS.Pankhani ya katundu otsika, contactor (ngati mukufuna) amazilamulira athandizira wa riyakitala.Njira iyi ya riyakitala ndi yolondola, koma chiwerengero chake ndi chachikulu ndipo mtengo wa kukhazikitsa ndi kuwongolera ndiwokwera.

4. Ikani contactor kutsogolo kwa fyuluta capacitor ndi kusagwirizana pamene katundu ndi otsika.Popeza nthawi ya contactor ayenera kukhala yeniyeni ndi ulamuliro ndi zovuta, zikhoza kuikidwa mu fakitale.

Njira iti yomwe ili yabwino kwambiri imadalira momwe zinthu zilili pa malo ndi momwe zida zimagwirira ntchito.

Ngati mukufuna kudziwa zambiri za majenereta a dizilo, talandilani ku Dingbo Power kudzera pa imelo dingbo@dieselgeneratortech.com, ndipo tidzakhala tikukuthandizani nthawi iliyonse.