Kutheni le nto imoto kufuneka ikhethe i-50HZ AC?|

I-Motor vibration yenye yeemeko zokusebenza zangoku zeemoto.Ke, ngaba uyazi ukuba kutheni izixhobo zombane ezinje ngeenjini zisebenzisa i-50Hz etshintshanayo yangoku endaweni ye-60Hz?

Amanye amazwe emhlabeni, anje nge-United Kingdom kunye ne-United States, asebenzisa i-60Hz alternating current, kuba asebenzisa inkqubo yedesimali, yintoni i-12 constellations, iiyure ezili-12, iishiling ezili-12 zilingana neponti enye njalo njalo.Amazwe kamva amkele inkqubo yedesimali, ngoko ke amaxesha amaninzi ngama-50Hz.

Ke kutheni sikhetha i-50Hz AC endaweni ye-5Hz okanye i-400Hz?

Kuthekani ukuba i-frequency iphantsi?

Elona frequency lisezantsi ngu 0, eyi DC.Ukuze ubonise ukuba i-Tesla yokutshintshana ngoku iyingozi, u-Edison wasebenzisa i-alternating current ukuvota ivoti yezilwanyana ezincinci.Ukuba iindlovu zithathwa njengezilwanyana ezincinci ... Ukuthetha ngeenjongo, phantsi kobukhulu obufanayo bangoku, umzimba womntu unokumelana nombane othe ngqo ixesha elide kunexesha lokumelana nokutshintshisana kwangoku kuhambelana ne-fibrillation ye-ventricular, oko kukuthi, ukutshintshisana kwangoku kuyingozi kakhulu.

U-Cute Dickson naye waphulukana noTesla ekugqibeleni, kwaye i-AC yabetha i-DC ngenzuzo yokutshintsha ngokulula inqanaba lombane.Kwimeko yamandla afanayo okuhambisa, ukwandisa i-voltage kuya kunciphisa ukuhanjiswa kwangoku, kwaye amandla asetyenzisiweyo kumgca nawo aya kuncipha.Enye ingxaki yokuhanjiswa kwe-DC kukuba kunzima ukophula, kwaye le ngxaki iseyingxaki kude kube ngoku.Ingxaki yosasazo lweDC iyafana nentlantsi eyenzekayo xa iplagi yombane itsalwa ngamaxesha aqhelekileyo.Xa umsinga ufikelela kwinqanaba elithile, i-spark ayikwazi ukucima.Siyibiza ngokuba "i-arc".

Ngokutshintshana ngoku, okwangoku kuya kutshintsha isalathiso, ngoko kukho ixesha apho ikhoyo inqumla i-zero.Ukusebenzisa le ndawo encinci yexesha langoku, sinokunqumla umgca wangoku ngesixhobo sokucima i-arc.Kodwa ulwalathiso lwe-DC yangoku aluyi kutshintsha.Ngaphandle kwale ndawo yokunqumla u-zero, kuya kuba nzima kakhulu kuthi ukucima i-arc.

Yintoni engalunganga nge-AC ephantsi?

Okokuqala, ingxaki yokusebenza kwe-transformer

I-transformer ixhomekeke ekutshintsheni intsimi yamagnetic kwicala eliphambili ukuze ikwazi ukunyathela okanye ukunyuka kwecala lesibini.Okukhona kucotha ukuphindaphindeka kokutshintsha kwemagnethi, kokukhona buthathaka ukungeniswa.Imeko enzima kakhulu yi-DC, kwaye akukho kufakwa konke konke, ngoko ke i-frequency iphantsi kakhulu.

Okwesibini, ingxaki yamandla ezixhobo zombane

Umzekelo, isantya se-injini yemoto sisimo sayo, esinje nge-500 rpm xa i-idling, i-3000 rpm xa isantya kwaye ishukuma, kunye neefrikhwensi eziguqulwayo ziyi-8.3Hz kunye ne-50Hz ngokulandelelanayo.Oku kubonisa ukuba okukhona isantya siphezulu, kokukhona inamandla enjini.

Kwangale ndlela inye, nge-frequency enye, okukhona i-injini inkulu, kokukhona ikhupha amandla amakhulu, yiyo loo nto ii-injini ze-diesel zinkulu kune-petroli, kwaye ii-injini ze-diesel ezinkulu nezinamandla zinokuqhuba izithuthi ezinzima ezifana neelori zebhasi.

Ngendlela efanayo, i-motor (okanye bonke oomatshini abajikelezayo) ifuna zombini ubungakanani obuncinci kunye namandla amakhulu aphumayo.Kukho indlela enye kuphela - ukunyusa isantya, yingakho i-frequency ye-alternating current ayinakuba phantsi kakhulu, kuba sifuna ubungakanani obuncinci kodwa amandla aphezulu.injini yombane.

Kukwanjalo nakwi-inverter air conditioners, ezilawula amandla emveliso ye-compressor yomoya womoya ngokuguqula ukuphindaphinda kwe-alternating current.Isishwankathelo, amandla kunye nokuphindaphinda zinxulunyaniswa ngokuqinisekileyo phakathi koluhlu oluthile.

Kuthekani ukuba i-frequency iphezulu?Umzekelo, kuthekani nge-400Hz?

Kukho iingxaki ezimbini, enye kukuba ukulahleka kwemigca kunye nezixhobo zanda, kwaye enye kukuba i-generator ijikeleza ngokukhawuleza.

Makhe sithethe ngelahleko kuqala.Iintambo zothumelo, izixhobo zesikhululo esincinci, kunye nezixhobo zombane zonke ziyasabela.Ukusabela kuhambelana nobuninzi.Ngaphantsi.

Okwangoku, ukusabela komgca wokuhanjiswa kwe-50Hz malunga ne-0.4 ohms, malunga namaxesha angama-10 ukuchasana.Ukuba inyuswe kwi-400Hz, ukusabela kuya kuba yi-3.2 ohms, malunga namaxesha angama-80 ukuchasana.Kwiintambo zothumelo lwe-voltage ephezulu, ukunciphisa ukusabela kungundoqo ekuphuculeni amandla okuhambisa.

Ngokuhambelana nokusabela, kukwakho i-capacitive reactance, ehambelana ngokuphambeneyo namaza.Ukuphakama kwe-frequency, encinci ye-capacitive reactance kunye nokukhulu ukuvuza kwangoku komgca.Ukuba i-frequency iphezulu, ukuvuza kwangoku komgca kuya kwanda.

Enye ingxaki sisantya sejenereyitha.Isethi yangoku yejeneretha ngokusisiseko ngumatshini wenqanaba elinye, oko kukuthi, iipali zamagnetic.Ukuze uvelise umbane we-50Hz, i-rotor ijikeleza kwi-3000 rpm.Xa isantya se-injini sifikelela kwi-3,000 rpm, unokuva ngokucacileyo ukuba injini ingcangcazela.Xa ijikela ku-6,000 okanye 7,000 rpm, uya kuziva ukuba injini sele iza kutsiba ngaphandle kwe-hood.

I-injini yemoto isenje, singasathethi ke ngentsimbi eyomeleleyo ilump rotor kunye ne-steam turbine enobunzima obuziitoni eziyi-100, ekwangunobangela wengxolo enkulu yomzi-mveliso wamandla.I-rotor yensimbi enobunzima beetoni ezili-100 kwi-3,000 revolutions ngomzuzu kulula ukuyithetha kunokukwenza.Ukuba i-frequency iphindwe kathathu okanye kane ngaphezulu, kuqikelelwa ukuba ijenereyitha inokubhabha iphume kwindawo yokusebenzela.

I-rotor enzima enjalo ine-inertia enkulu, eyona nto isisiseko sokuba inkqubo yamandla ibizwa ngokuba yi-inertial system kwaye inokugcina ukusebenza okukhuselekileyo kunye nokuzinza.Kukwayiyo loo nto imithombo yamandla ephazamisayo efana nomoya kunye nelanga icela umngeni kwimithombo yamandla emveli.

Ngenxa yokuba indawo itshintsha ngokukhawuleza, iirotor ezinobunzima beetoni ezininzi zicotha kakhulu ukunciphisa okanye ukunyusa imveliso ngenxa ye-inertia enkulu (ingqikelelo yerempu yesantya), engakwaziyo ukuhambelana notshintsho lwamandla omoya kunye nokuveliswa kwamandla e-photovoltaic. ngamanye amaxesha kufuneka iyekwe.Umoya kunye nokukhanya okushiyiweyo.

Inokubonwa koku

Isizathu sokuba i-frequency ayinakuba phantsi kakhulu: i-transformer inokusebenza kakuhle kakhulu, kwaye i-motor ingaba yincinci ngobukhulu kunye namandla amakhulu.

Isizathu sokuba i-frequency ayifanele ibe phezulu kakhulu: ukulahleka kwemigca kunye nezixhobo zinokuba zincinci, kwaye isantya se-generator asifuni ukuba siphezulu kakhulu.

Ngoko ke, ngokwamava kunye nomkhwa, amandla ethu ombane abekwe kwi-50 okanye i-60 Hz.

Ixesha lokuposa: Jul-06-2022