Thyristor Converter: iimpawu ukusebenza kunye nophuhliso amathuba

Ufundo iimpawu semiconductors ukuba ukwenza izinto ezintsha ezithe ngenkuthalo kusetyenziswa kwiisekethe ezahlukeneyo elektroniki. Ngokuthe ngcembe kwakukho izixhobo ezinamandla ngakumbi ezivumela isenza i iziphaluka kwamandla ophezulu.

Umzekelo omhle olu thyristor Converter. Ukususela ekuqaleni kwalo, waqala ukunandipha midlalo kakuhle yayibafanele phakathi nabayili. Esi sixhobo lisetyenziswa kwiisekethe ezahlukeneyo zombane: starter kunye ibhetri iitshaja, oomatshini welding, izifudumezi, inverters, rectifiers ilawulwe , njl Olu ayilo luhlu olupheleleyo lwezixhobo le thyristor converter lisetyenziswa kuyo.

Ekuhambeni kwexesha, kwakukho izixhobo ezinamandla apho oko kunokwenzeka ukulawula isantya iinjini zombane okanye izityalo ukufudumeza. Baye ngenkuthalo ukusetyenziswa kwemveliso, kwaye kwezinye iimeko bade indawo inkqubo bemveli ngexesha "generator-imoto" (GD).

iziphaluka Ukuphucula ulawulo lande kakhulu ukuthembeka kwezi izixhobo. thyristor converter enamandla ekwaziyo yokunqanda excitation yangoku, okanye ifakwe ngqo iankile chain injini. Nangona kunjalo, inkqubo yokuqala yolawulo ukubetha-isigaba (IFSB) ivame ukuziphatha elingafani. Oku kunokubangela, nithi, i "roll-over" le inverter kunye neziphumo yeekhomponenti ngamandla le nkqubo. Isiseko kwesakhiwo, kakhulu, amagqabi kangako. Ekuhambeni kwexesha, ezi ngxaki yinto elidlulileyo. Kwakukho device oluthembekileyo elektroniki ukuba ilawulwa ngokukhuselekileyo kunye, xa kukho imfuneko, ukukhusela olubuthathaka ukuxinana thyristor Converter. Kuyimfuneko ukuqaphela ukusebenza eziphakamileyo, maintainability elungileyo kunye nobukhulu encinane yale sixhobo ngokuphathelele kwi Iindlela ezizezinye.

Kodwa ngaphandle ukusebenza okulungileyo, izixhobo ezifana ilifa iimpazamo ezithile ngokunxulumene kwisekethe lwamandla:

• Umlinganiselo kwamandla lovukelo esebenzayo xa usebenzisa kuzo ayitshintshi kuba ngcono ukuba kwicala womnatha yonikezelo ngokubanzi. Ukugcina cos φ kufuneka asebenzise compensators igunya yovukelo ngokusekelwe kwi capacitors.

• Xa umsebenzi wayo, converters thyristor kakhulu kakhulu, ziyihlambele womnatha amandla sokuphamazisa aqhelelkileyo. ezizodwa RC-iziphaluka zisetyenziswa ekulweni le engxakini.

Ukusetyenziswa kwezixhobo nesilungiselelwe ngokukodwa uyakwazi ukutshintsha i parameter ezifana amaza-mbane. Oku lisetyenziswa eziko induction, xa ekusekeni isinyithi okanye enye ufakelo zombane. Lo msebenzi wenziwa ngokukodwa ukuba yenziwa ukwenzela le njongo thyristor frequency Converter. indalo yayo ngcono kakhulu ekhoyo ngexesha kobuchwepheshe yokusebenza metal emsebenzini.

Ekuhambeni kwexesha, izixhobo ezinye ezisebenza ngokupheleleyo eminye imigaqo. amacebo ngophuhliso ngokusekelwe ophezulu-power IGBT-transistors ezisetyenziselwa ukulawula iinjini kwamandla eliphantsi kunye neliphakathi. Kokuba ziye kutshintshwa iinkqubo eziphelelwe lixesha.