Tlhahlobo ea Harmonic ho Litsamaiso tsa Matla
Pendahuluan
Lefatšeng le ntseng le tswela pele le ho itshetleha ka theknoloji, boleng ba motlakase o fanwang ho bareki bo ntse bo fetoha karolo ya bohlokwa e hlokang tlhokomelo. E nngwe ya mabaka a ka sehloohong a ka amang boleng bona ke boteng ba di-harmonics tsamaisong ya motlakase. Di-harmonics ke maqhubu a sinusoidal a nang le maqhubu a phahameng ho feta maqhubu a motheo a sistimi ya motlakase. Moelelong wa ditsamaiso tsa motlakase, tlhahlobo ya di-harmonics e bua ka tshebetso ya ho hlwaya le ho fokotsa ditlamorao tse mpe tsa di-harmonics tsena. Sengoloa sena se tla fana ka tlhahlobo e tebileng ya di-harmonics, mehlodi ya tsona, tshusumetso ya tsona ditsamaisong tsa motlakase, le mekgwa ya ho di sekaseka le ho di rarolla.
Ho utloisisa Harmonica
Ka botekgeniki, diharmoniki di ka hlaloswa e le dikarolo tsa sinusoidal tsa letshwao la nako le nako leo maqhubu a lona e leng dipalopalo tsa maqhubu a motheo. Maqhubu a motheo ke maqhubu a mantlha a letshwao la pele, hangata e le 50 Hz kapa 60 Hz tsamaisong ya motlakase. Mohlala, haeba maqhubu a motheo e le 50 Hz, harmonic ya bobedi e tla ba ho 100 Hz, harmonic ya boraro e be ho 150 Hz, jj.
Mehloli e Kopaneng ho Matla a Matla
Li-harmoniki litsamaisong tsa motlakase hangata li bakoa ke lisebelisoa tsa motlakase tse seng tsa mola. Mehloli e meng e meholo ea li-harmoniki e kenyelletsa:
1. Lisebelisoa tsa Elektroniki: Lisebelisoa tse ngata tsa sejoale-joale tsa malapeng le tsa indasteri tse kang lik'homphieutha, lithelevishene le lisebelisoa tse laoloang ka elektroniki li na le phepelo ea motlakase eo ka tlhaho e seng mola.
2. Li-Converter tsa Matla: Lisebelisoa tse kang li-rectifier, li-inverter le li-converter ke lisosa tse ka sehloohong tsa li-harmonics. Sena se bakoa ke phetoho ho tloha ho AC ho ea ho DC kapa ka tsela e fapaneng, e kenyeletsang litšobotsi tse seng tsa mola.
3. Dimota tsa Diindasteri: Dimota tsa AC tse laolwang ka di-drive tse fetohang ka lebelo (VSD) le tsona di hlahisa di-harmoniki.
4. Lisebelisoa tsa Elektronike tsa Matla: Sehlopha sena se kenyeletsa lisebelisoa tse kang UPS (Uninterruptible Power Supply) le litsamaiso tsa mabone tse nang le li-ballast tsa elektroniki.
Tšusumetso ea Harmonics ho Litsamaiso tsa Matla
Li-harmonic li ka baka mathata a tebileng litsamaisong tsa motlakase, ka bobeli ka lisebelisoa le ka meralo ea motheo ea gridi ea motlakase ka boeona. Litlamorao tse ling tse kholo li kenyelletsa:
1. Ho Futhumatsa ho Feteletseng: Harmonic e ka baka ho chesa ho feteletseng ho li-transformer, li-conductor le mechini. Sena se ka potlakisa ho senyeha ha insulation le ho fokotsa bophelo ba lisebelisoa.
2. Tahlehelo ea Motlakase: Boteng ba li-harmonics bo ka eketsa tahlehelo ea motlakase tsamaisong ea kabo ea motlakase, e leng se lebisang ho fokotseng katleho ea ts'ebetso.
3. Ho Hlōleha ha Lisebelisoa: Ho utloa bohloko ha lisebelisoa tsa motlakase ho li-harmonics ho ka baka ho hloleha pele ho nako kapa tšenyo ea tšohanyetso.
4. Tšitiso ea Puisano: Li-harmonic li ka sitisa litsamaiso tsa puisano le taolo ka lebaka la lerata leo li le hlahisang.
5. Ho resonance: Metswako e itseng ya di-harmonics le dibopeho tsa marangrang e ka baka ho resonance, e leng se ka hlahisang ho phahama ha motlakase le ha jwale ho senyang disebediswa.
Mokhoa oa Tlhahlobo ea Harmonic
1. Tlhahlobo ea Phetoho e Potlakileng ea Fourier (FFT): FFT ke mokhoa o tloaelehileng oa ho fetolela lets'oao la nako-domain ho ea sebakeng sa maqhubu. E lumella ho tsebahatsa sekala sa harmonic sa lets'oao la AC. Ka FFT, re ka fumana boholo le mohato oa karolo e 'ngoe le e 'ngoe ea harmonic.
2. Mokhoa oa ho Lekanya ka ho Otloloha: Tekanyo e tobileng e sebelisang lisebelisoa tsa ho lekanya tsa harmonic tse kang li-analyzer tsa boleng ba matla li ka fana ka lintlha tsa nako ea sebele mabapi le boleng ba matla le maemo a harmonic.
3. Ho Etsa Mehlala le ho Etsisa: Lisebelisoa tsa ho Etsisa tse kang MATLAB/Simulink kapa software e ikhethileng e kang ETAP li ka sebelisoa ho etsa mohlala le ho sekaseka litlamorao tsa harmonic litsamaisong tsa motlakase.
4. Mokhoa oa Tlhahlobo: E thehiloe khopolo-taba ea potoloho le tlhahlobo ea spectral e lumellang ho baloa ha meroalo ea harmonic ho latela litšobotsi tsa mohloli le marang-rang a motlakase.
Ho Rarolla Mathata a Harmonic
1. Ho Sebelisa Li-Harmonic Filters: E 'ngoe ea litharollo tse tloaelehileng haholo ke ho kenya sefa sa harmonic, ebang ke se sa sebetseng kapa se sebetsang. Li-passive filters li entsoe ka inductance, capacitance, le likarolo tsa khanyetso ho fokotsa maqhubu a itseng a harmonic. Li-active filters, ka lehlakoreng le leng, li sebelisa likarolo tsa elektroniki tse matla tse rarahaneng haholo bakeng sa lits'ebetso tse matla haholoanyane.
2. Moralo o Ntlafaditsweng wa Disebediswa: Ho kgetha le ho rala disebediswa tsa motlakase tse nang le dibopeho tse tlase tsa harmonic ho ka fokotsa tlhahiso ya harmonic ho tloha qalong.
3. Kabo e Eketsehileng ea Moroalo: Ho qoba ho bokellana ha meroalo e seng ea mola sebakeng se le seng ho ka boela ha thusa ho fokotsa maemo a harmonic.
4. Tšebeliso ea Li-Transformer tsa Zig-Zag: Li-Transformer tse etselitsoeng ho fokotsa li-harmonics li ka sebelisoa litsamaisong tsa kabo ea motlakase.
5. Setlolo se Sebetsang sa Harmonic: Sesebelisoa sena se sebetsa ka ho kenya motlakase o fapaneng ho tsoa ho li-harmonics tse lemohuoeng, ka hona ho theha tekano e fokotsang tšusumetso e mpe marangrang a motlakase.
Qetello
Tšusumetso ea li-harmonics litsamaisong tsa motlakase e ke ke ea hlokomolohuoa libakeng tsa indasteri le tsa malapeng. Kutloisiso e felletseng ea mehloli, litlamorao le mekhoa ea tlhahlobo ea li-harmonics ke mohato oa pele oa ho boloka boleng ba motlakase. Ho rarolla mathata a harmonics ho hloka mokhoa o akaretsang, ho tloha moralo o ntlafalitsoeng oa sistimi le ts'ebeliso ea li-filters tse sebetsang ho ea thutong mabapi le bohlokoa ba taolo ea boleng ba motlakase. Ha theknoloji e ntse e fetoha 'me litlhoko tsa motlakase li ntse li eketseha, phokotso ea harmonics e tla fetoha sebaka se thata le sa bohlokoa nakong e tlang.
