Igama elithi "harmonics" ligama elibanzi kwaye lisetyenziswa kumashishini amaninzi ahlukeneyo.Ngelishwa, iingxaki ezithile zombane zityholwa ngokungalunganga kwii-harmonics.Ezi harmonics akufuneki zidideke kunye nokuphazamiseka kwamaza kanomathotholo (RFI), okwenzeka kumaza aphezulu kakhulu kune-harmonics.Ii-harmonics zeentambo zombane zi-lowfrequency, ngoko ke aziphazamisi iisignali ze-LAN ezingenazingcingo, iiselfowuni, i-FM okanye iirediyo ze-AM, okanye nasiphi na isixhobo esinovakalelo olukhethekileyo kwingxolo yamaza amaninzi.
I-Harmonics ibangelwa yimithwalo engeyiyo yomgca.Imithwalo engahambelaniyo ayizobi i-sinusoid yangoku kwi-utility.Imizekelo yemithwalo engahambelaniyo ibandakanya ii-VFDs, iimoto ze-EC, izibane ze-LED, iifotokopi, iikhompyutha, izixhobo zombane ezingaphazamisekiyo, oomabonakude, kunye nobuninzi bezinto zombane ezibandakanya umbane.Ezona zizathu zibalulekileyo ze-harmonics kwisakhiwo ngokuqhelekileyo azikho umgca, amandla amanqanaba amathathu, kwaye amandla amaninzi akhoyo, ubukhulu be-harmonic currents kwinethiwekhi iya kuba.Icandelo elilandelayo liphonononga umbane
Iimpawu zeVFD.Oku kukubonisa umzekelo womthwalo ongekho mgca.Olona yilo ludumileyo lweVFD lusebenza ngokuthatha i-voltage ye-AC yesigaba sesithathu kunye nokulungiswa kombane ngeediode.Oku kuguqula amandla ombane abe ngumbane ogudileyo weDC kwibhanki yeecapacitors.I-VFD emva koko iguqula i-DC ibuyele kwi-AC waveform ye-motor ukuze ilawule isantya, i-torque kunye necala lemoto.I-non-linear current yenziwe ngesigaba sesithathu sokulungiswa kwe-AC-to-DC.Iingxaki ezibangelwa ukuphazamiseka kwe-harmonic Amanqanaba aphezulu okuphazamiseka kwe-harmonic kwiziko linokudala uluhlu olubanzi lweengxaki.Ezinye zeengxaki ezinokuqubisana nazo zezi:
• Ukungaphumeleli kwangaphambi kwexesha kunye nokunciphisa ixesha lokuphila kwezixhobo kuhlala kwenzeka xa ubushushu bukhona, obunje: - Ukushisa ngokugqithiseleyo kwee-transformers, iintambo, ii-circuit breakers kunye ne-fuses.
-Ukushisa ngokugqithiseleyo kweenjini ezinikwe amandla ngokuthe ngqo kumgca
• Iihambo eziphazamisayo zeziqhekeza kunye neefusi ngenxa yobushushu obongezelelweyo kunye nokulayishwa kwe-harmonic
• Ukusebenza okungazinzanga kweejenereyitha zokugcina
• Ukusebenza okungazinzanga kwee-elektroniki ezibuthathaka ezifuna i-waveform ye-AC ye-sinusoidal ecocekileyo
• Izibane ezikhanyayo
Zininzi iindlela zokunciphisa i-harmonics kwaye akukho sisombululo "sinye silingana nazo zonke".I-Noker Electric ngumboneleli oqeqeshiweyo weisihluzo esisebenzayo se-harmonickwayei-static var generator.Ukuba nawuphi na umbuzo malunga ne-harmonic, nceda uqhagamshelane noNoker Electric, siya kukunika isisombululo kuwe.
Ixesha lokuposa: Aug-28-2023