Inverter ea letsatsi ke eng le hore na mesebetsi ea inverter ke efe

Ke eng amotlakase oa letsatsi

Mokhoa oa ho fehla matla a letsatsi a AC o entsoe kaliphanele tsa letsatsi, molaoli oa tefo, inverter lebetri ; sisteme ea ho fehla matla a letsatsi ea DC ha e kenyelle inverter. Inverter ke sesebelisoa sa ho fetola matla. Li-inverter li ka aroloa ka inverter e ikemetseng ea oscillation le inverter e hlasimollang ka thoko ho latela mokhoa oa ho hlasimolla. Mosebetsi o ka sehloohong ke ho fetolela matla a DC a betri hore e be matla a AC. Ka potoloho ea borokho bo felletseng, processor ea SPWM hangata e sebelisetsoa ho feto-fetoha, ho sefa, ho matlafatsa motlakase, joalo-joalo ho fumana matla a sinusoidal AC a lumellanang le maqhubu a mabone a mabone, voltage e lekantsoeng, joalo-joalo bakeng sa basebelisi ba ho qetela ba sistimi. Ka inverter, betri ea DC e ka sebelisoa ho fana ka matla a AC ho lisebelisoa.

2. Mofuta oa inverter

 

(1) Karolelano ho latela boholo ba kopo:

 

(1) Inverter e tloaelehileng

 

Kenyelletso ea DC 12V kapa 24V, AC 220V, tlhahiso ea 50Hz, matla ho tloha ho 75W ho isa ho 5000W, mefuta e meng e na le phetoho ea AC le DC, ke hore, ts'ebetso ea UPS.

 

(2) Inverter/ charger all-in-one machine

 

Ho senamofuta oa inverter, basebelisi ba ka sebelisa mefuta e fapaneng ea matla ho matlafatsa meroalo ea AC: ha ho na le matla a AC, matla a AC a sebelisetsoa ho matlafatsa mojaro ka inverter, kapa ho tjhaja betri; ha ho se na matla a AC, betri e sebelisoa ho matlafatsa mojaro oa AC. . E ka sebelisoa hammoho le mehloli e fapaneng ea matla: libeteri, lijenereithara, liphanele tsa letsatsi le li-turbine tsa moea.

 

(3) Inverter e khethehileng bakeng sa poso le mehala ea puisano

 

Fana ka li-inverters tsa boleng bo holimo tsa 48V bakeng sa poso le mehala ea puisano, likhokahano. Lihlahisoa tsa eona ke tsa boleng bo botle, tse ka tšeptjoang haholo, modular (mojule ke 1KW) inverter, 'me e na le ts'ebetso ea N+1 redundancy' me e ka atolosoa (matla ho tloha 2KW ho ea ho 20KW).

 

4) Inverter e khethehileng bakeng sa lifofane le sesole

Mofuta ona oa inverter o na le 28Vdc input mme o ka fana ka lihlahisoa tse latelang tsa AC: 26Vac, 115Vac, 230Vac. Khafetsa ea eona e hlahisoang e ka ba: 50Hz, 60Hz le 400Hz, mme matla a tsoang ho tloha 30VA ho isa 3500VA. Ho boetse ho na le li-converter tsa DC-DC le li-frequency converter tse inehetseng ho bofofisi.

(2) Classification ka tlhahiso ea waveform:

 

(1) "Square wave inverter".

 

The AC voltage waveform e hlahisoang ke square wave inverter ke square wave. Li-circuits tsa inverter tse sebelisoang ke mofuta ona oa inverter ha li tšoane hantle, empa ntho e tloaelehileng ke hore potoloho e batla e le bonolo 'me palo ea li-tubes tsa motlakase tse sebelisoang li nyenyane. Matla a moralo ka kakaretso a pakeng tsa li-watts tse lekholo le kilowatt e le 'ngoe. Melemo ea square wave inverter ke: potoloho e bonolo, theko e tlaase le tlhokomelo e bonolo. Bothata ke hore motlakase oa square wave o na le palo e kholo ea li-harmonics tse phahameng, tse tla hlahisa tahlehelo e eketsehileng ka lisebelisoa tsa thepa tse nang le li-inductors tsa tšepe kapa li-transformer, tse bakang tšitiso ho li-radio le lisebelisoa tse ling tsa puisano. Ntle le moo, mofuta ona oa inverter o na le mefokolo joalo ka mefuta e sa lekaneng ea taolo ea motlakase, ts'ebetso ea ts'ireletso e sa phethahalang, le lerata le batlang le le holimo.

 

2) Mohato wave inverter

Phallo ea AC voltage waveform ka mofuta ona oa inverter ke leqhubu la mohato. Ho na le mela e mengata e fapaneng bakeng sa inverter ho hlokomela tlhahiso ea maqhubu a mohato, 'me palo ea mehato ea sebopeho sa wave wave e fapana haholo. Monyetla oa inverter ea wave wave ke hore tlhahiso ea waveform e ntlafalitsoe haholo ha e bapisoa le leqhubu la lisekoere, 'me litaba tse phahameng tsa harmonic li fokotsehile. Ha mehato e fihla ho feta 17, sebopeho sa wave wave se ka fihlella leqhubu la quasi-sinusoidal. Ha u sebelisa sehlahisoa se se nang transformer, katleho ea kakaretso e phahame haholo. Phoso ke hore potoloho ea lere ea superposition e sebelisa li-tubes tse ngata tsa matla, 'me mefuta e meng ea potoloho e hloka lisebelisoa tse ngata tsa matla a DC. Sena se tlisa khathatso ho hlopheng le ho khoasolla mehala ea li-solar cell array le ho tjhaja ka mokhoa o leka-lekaneng ha libeteri. Ho feta moo, matla a maqhubu a litepisi a ntse a e-na le tšitiso e itseng ea maqhubu a phahameng ho seea-le-moea le lisebelisoa tse ling tsa puisano.

 

(3) Sine wave inverter

 

The AC voltage waveform e hlahisoang ke sine wave inverter ke sine wave. Melemo ea sine wave inverter ke hore e na le waveform e ntle ea tlhahiso, ho khopama ho tlase, tšitiso e nyane ho li-radio le lisebelisoa tsa puisano, le lerata le tlase. Ho phaella moo, e na le mesebetsi e feletseng ea tšireletso le katleho e phahameng ka kakaretso. Mefokolo ke: potoloho e batla e rarahane, e hloka theknoloji e phahameng ea tlhokomelo, 'me e theko e boima.

 

Khethollo ea mefuta e meraro e ka holimo ea li-inverters e thusa ho baqapi le basebelisi ba tsamaiso ea photovoltaic le mekhoa ea matla a moea ho khetholla le ho khetha li-inverters. Ha e le hantle, li-inverters tse nang le waveform e tšoanang li ntse li fapane haholo ho latela melao-motheo ea potoloho, lisebelisoa tse sebelisoang, mekhoa ea ho laola, joalo-joalo.

 

3. Lintlha tse ka sehloohong tsa ts'ebetso ea inverter

 

Ho na le litekanyo tse ngata le maemo a tekheniki a hlalosang ts'ebetso ea inverter. Mona re fana feela ka tlhaloso e khuts'oane ea litekanyo tsa tekheniki tse sebelisoang hangata ha ho hlahlojoa li-inverters.

1. Maemo a tikoloho bakeng sa tšebeliso ea inverter

 

Maemo a tloaelehileng a ts'ebeliso ea inverter: bophahamo ha bo fete 1000m, 'me mocheso oa moea ke 0 ~ + 40 ℃.

 

2. Maemo a motlakase a kenyang DC

 

Lethathamo la ho feto-fetoha ha motlakase oa DC: ± 15% ea matla a lekantsoeng a pakete ea betri.

 

3. Rated output voltage

 

Tlas'a maemo a matla a kenyelletsoeng, inverter e lokela ho ntša boleng ba voltage e lekantsoeng ha e ntša motlakase o lekantsoeng.

 

Lethathamo la ho feto-fetoha ha motlakase: mohato o le mong 220V±5%, mekhahlelo e meraro 380±5%.

 

4. E lekanyelitsoe tlhahiso ea hona joale

 

Tlas'a sekhahla sa tlhahiso e boletsoeng le matla a matla a mojaro, boleng ba hajoale bo lekantsoeng boo inverter e lokelang ho e ntša.

 

5. E lekanyelitsoe khafetsa tlhahiso

 

Tlas'a maemo a boletsoeng, sekhahla sa tlhahiso e lekantsoeng ea inverter e tsitsitseng ke 50Hz:

 

Lebelo la ho feto-fetoha ha maqhubu: 50Hz ± 2%.

 

6. Boholo ba litaba tsa harmonic tsamochine o kenang motlakase

 

Bakeng sa li-inverters tsa sine wave, tlas'a mojaro o hanyetsang, boholo ba harmonic ba motlakase oa tlhahiso e lokela ho ba ≤10%.

 

7. Inverter overload bokhoni

 

Tlas'a maemo a boletsoeng, bokhoni ba tlhahiso ea inverter bo feta boleng ba hona joale bo lekantsoeng ka nako e khutšoanyane. Bokhoni bo bongata ba inverter bo lokela ho fihlela litlhoko tse itseng tlasa ntlha e boletsoeng ea matla a mojaro.

 

8. Inverter e sebetsang hantle

 

Tlas'a matla a motlakase a lekantsoeng, tlhahiso, matla a hona joale le a boletsoeng, karo-karolelano ea matla a sebetsang a inverter ho matla a kenang a sebetsang (kapa matla a DC).

 

9. Laela matla ntlha

 

Phapang e fapaneng e lumelletsoeng ea matla a motlakase oa inverter e khothalletsoa hore e be 0.7-1.0.

 

10. Laola asymmetry

 

Tlas'a 10% mojaro oa asymmetric, asymmetry ea frequency e tsitsitseng ea mekhahlelo e meraro ea inverter output voltage e lokela ho ba ≤10%.

 

11. Asymmetry ea motlakase oa tlhahiso

 

Tlas'a maemo a tloaelehileng a ts'ebetso, mojaro oa mohato o mong le o mong o na le symmetrical, 'me asymmetry ea motlakase oa tlhahiso e lokela ho ba ≤5%.

 

12. Litšobotsi tsa ho qala

Tlas'a maemo a tloaelehileng a ts'ebetso, inverter e lokela ho khona ho qala ka tloaelo ka makhetlo a 5 ka tatellano tlas'a mojaro o feletseng le maemo a ho sebetsa a se nang mojaro.

 

13. Tshireletso tshebetso

 

Inverter e lokela ho ba le lisebelisoa tse latelang: ts'ireletso ea potoloho e khuts'oane, ts'ireletso ea nako e telele, ts'ireletso e fetang matla a motlakase, ts'ireletso e tlase ea motlakase le ts'ireletso ea tahlehelo ea karolo.

 

15. Tšitiso le kgahlanong le tshitiso

 

Inverter e lokela ho khona ho mamella tšitiso ea motlakase libakeng tse akaretsang tlasa maemo a tloaelehileng a ho sebetsa. Ts'ebetso e khahlanong le tšitiso le khokahano ea motlakase ea inverter e lokela ho latela litekanyetso tse amehang.

 

16. lerata

 

Li-inverters tse sa sebetseng khafetsa, tse hlokometsoeng le ho hlokomeloa li lokela ho ba ≤95db;

 

Li-inverters tse sebelisoang khafetsa, tse hlokometsoeng le ho hlokomeloa li lokela ho ba ≤80db.

 

17. bontsha

 

Inverter e lokela ho ba le ponts'o ea data bakeng sa liparamente tse kang AC output voltage, output current, le frequency frequency, hammoho le ponts'o ea lets'oao bakeng sa ho kenya letsoho ho phela, ho matlafatsoa, ​​le boemo ba phoso.

 

4. Fumana maemo a tekheniki a inverter:

 

Ha u khetha inverter bakeng sa tsamaiso e tlatsanang ea matla a photovoltaic / moea, ntho ea pele eo u lokelang ho e etsa ke ho tseba lintlha tse latelang tsa bohlokoa ka ho fetisisa tsa theknoloji ea inverter: input DC voltage range, tse kang DC24V, 48V, 110V, 220V, joalo-joalo;

 

Rated output voltage, tse kang tse tharo-mohato 380V kapa single-mohato 220V;

 

Sebopeho sa maqhubu a motlakase a tsoang, joalo ka sine wave, trapezoidal wave kapa square wave.