Ka ts'ebeliso e pharaletseng ea li-drive speed drive, servo, ups le lihlahisoa tse ling, palo e kholo ea li-harmonics e hlahile ka har'a marang-rang a matla, 'me li-harmonics li tlisitse mathata a maholo haholo a boleng ba matla.E le ho rarolla bothata ba harmonic ho marang-rang a matla, k'hamphani ea rona e hlahisitse maemo a mararosefe e sebetsange ipapisitse le sefe e sebetsang ea mekhahlelo e 'meli.
Sesefa se sebetsang sa harmonice ka sebelisoa haholo liindastering, khoebong le marangrang a kabo ea litsi, joalo ka: litsamaiso tsa motlakase, likhoebo tsa motlakase tsa motlakase, lisebelisoa tsa ho hloekisa metsi, likhoebo tsa petrochemical, mabenkele a maholo a mabenkele le meaho ea liofisi, likhoebo tse nepahetseng tsa elektroniki, boema-fofane / litsamaiso tsa phepelo ea motlakase koung, litsi tsa bongaka. , joalo-joalo Ho latela lintho tse fapaneng tsa ts'ebeliso, ts'ebeliso easetlhoa sa matla se sebetsange tla bapala karolo ea ho netefatsa ho tšepahala ha phepelo ea motlakase, ho fokotsa tšitiso, ho ntlafatsa boleng ba sehlahisoa, ho eketsa bophelo ba lisebelisoa le ho fokotsa tšenyo ea thepa.
Harmonic ea 3 liindastering tse ngata tsa semiconductor e tebile haholo, haholo-holo ka lebaka la palo e kholo ea lisebelisoa tsa tokiso ea karolo e le 'ngoe e sebelisoang likhoebong.Harmonic ea boraro ke ea li-harmonics tsa tatellano ea zero, e nang le litšobotsi tsa ho bokella moleng o sa nke lehlakore, e leng se bakang khatello e feteletseng moleng o sa nke lehlakore, esita le ketsahalo ea mollo, e nang le likotsi tse kholo tse patiloeng polokehong ea tlhahiso.Harmonics e ka boela ea etsa hore li-circuit breakers li tsamaee, li liehe nako ea tlhahiso.Haronic ea boraro e etsa ho potoloha ho transformer le ho potlakisa botsofali ba transformer.Tšilafalo e tebileng ea harmonic e tla ama ts'ebetso ea ts'ebeletso le bophelo ba lisebelisoa tsamaisong ea kabo ea matla.
Boholo ba likhokahano tsa tokiso ea inverter ke ts'ebeliso ea li-pulses tse 6 ho fetolela AC ho DC, ka hona, li-harmonics tse hlahisoang hangata ke makhetlo a 5, 7, 11.Likotsi tsa eona tse ka sehloohong ke likotsi tsa lisebelisoa tsa motlakase le ho kheloha ha tekanyo.Tšebeliso easefe e sebetsange ka ba tharollo e ntle bothateng bona.
Tšebeliso eaharmonic e sebetsangsefe:
1. Sefa tsoa harmonics hona joale, e leng ka ka tsela e atlehileng sefa tsoa harmonics ea 2-25 makhetlo a mojaro hona joale, e le ho etsa netweke kabo hloekile le e sebetsang hantle, le ho kopana le ditlhoko tsa maemo a naha bakeng sa kabo netweke clipping.Sesefa se sebetsang se ikamahanyang le puseletso ea ho latela, se ka tsebahatsa liphetoho tse akaretsang tsa mojaro le liphetoho tsa dikahare tsa mojaro le ho latela puseletso kapele, karabelo ea 80us ho liphetoho tsa mojaro, 20ms ho fihlela puseletso e felletseng ea ho lata.
2. Ntlafatsa ho se leka-lekane ha tsamaiso, e ka felisa ka ho feletseng ho se leka-lekane ha tsamaiso e bakoang ke li-harmonics, tabeng ea tumello ea thepa ea thepa, e ka behoa ho ea ka mosebedisi ho lefella tsamaiso ea motheo ea tatellano e mpe le likarolo tsa tatellano ea zero ho leka-lekana le ho leka-lekanya matšeliso a itekanetseng matla a sebetsang.
3. Thibela resonance ea marang-rang a matla, a ke keng a lumellana le marang-rang a matla, 'me a ka etsisa ka katleho resonance ea motlakase ka boeona ka har'a sebaka sa matla a eona.
4. Mefuta e fapaneng ea ts'ebetso ea ts'ireletso, e nang le ho feta hona joale, ho feta motlakase, tlas'a motlakase, mocheso o phahameng, phoso ea potoloho ea tekanyo, ho otla ha lehalima le mesebetsi e meng ea tšireletso.
5. Ts'ebetso e felletseng ea dijithale, e nang le segokanyimmediamentsi sa setsoalle sa motho, se etsang hore ts'ebetso e be bonolo, e be bonolo ho e sebelisa le ho e boloka.
Nako ea poso: Oct-21-2023