Ngokuthuthuka okuqhubekayo kwesayensi nobuchwepheshe, Ubuchwepheshe be-Inverter buthuthukise kakhulu. Ucwaningo nge-Inverter Power Supplies seluthuthukile futhi. Okwamanje, Ngaphezu kwamandla amvamisa wamandla, I-High-Frequency Inverters nayo yaqala ukuqhubeka nemakethe yentuthuko ye-Inverter Power Supplies futhi kulindeleke ukuthi ithathe isikhundla sokuvalelwa imvamisa yamandla. Yize ama-Invertern averecy avela ekushisekeni kwama-invertern frequency avamisile afana nosayizi omkhulu, imvamisa ephansi, kanye nokusebenza kahle okuphansi, abasakwazi ukubuyisela ngokuphelele iqhaza le-inverters frequency frequency. Qhathanisa nabakwa-inverters averency, Ama-Inverternern Workncy anezinzuzo zawo ezihlukile. Isikimu sokuklama amandla esizimele se-Inverter Power Supply ngokusekelwe ku-Power Frequency Transformer ihlongozwa lapha.
1. I-Inverter Power Supply Design Design
Isibalo 1 ngumdwebo we-block wokuhlinzekwa kwamandla kwe-inverter okususelwa ekushintsheni kobubanzi be-pulse (Pwm) ubuchwepheshe. Umjikelezo wonke ukhetha okokufaka kwe-DC ephansi ye-DC futhi uwavula ukuze u-ac voltage ngokusebenzisa umjikelezo we-inverter egcwele. Kuyaqiniswa inani elilinganiselwe elilinganiselwe yi-Power Frequency Boost Book, bese-ke i-ac voltage ehlangabezana nezidingo ukukhipha umjikelezo wokuhlunga. Ngokujwayelekile, Kuyadingeka ukukhipha 220V / 50hz AC.
2. I-Inverter Power Suppler Hardware Supplerware Design
2.1 Ubuchwepheshe be-PWM
Isisekelo se-theoretical of Pwm Control Technology yi-theorem engenamqondo. Igagasi le-Sine lisetshenziswa njengegagasi lokushintshashintsha lokusebenzisa i-bipolar pulse Width Modulation Valation (I-SPWM) nge-amplitude yenkampani efanayo yokuphuma kanye nobubanzi be-pulse bushintsha ngokuya ngegagasi le-sine. Lesi siginali se-square wave sengezwa ku-inverser i-inverter ye-incer ye-incerter eguquguqukayo ilawulwa ukuze ivule futhi icishe, futhi ekugcineni iseduze ne-wave ye-ac autputform ekahle iyatholakala. Lobu buchwepheshe benza umjikelezo we-Hardware ulula futhi uthuthukise ukusebenza kwe-wavexform. Isibalo 2 Ingabe umdwebo we-wiring kanye ne-spwm waveform usebenzisa idivaysi ye-U3988 ukulawula ibhuloho le-inverter. 0I-UTA ne-0TB yizikhonkwane zokukhipha ze-Sine Wave Pulse Ukulandelana. Ukukhishwa kwezimpawu ngalezi zinhlamvu ezimbili ngokuvamile kudingeka kudlule ngokujikeleza kokulawula okufile ngaphambi kokuthunyelwa kwi-inverter. Shintsha ibhuloho.
2.2 Indima ye-Power Frequency Transformer in inverter Circuit
Ukufakwa kwamandla okuhlinzekwa ngamandla kwamandla kagesi kuvame ukwenziwa i-DC ye-voltage dc ephansi, esebenzisa umjikelezo we-incerter webhuloho eligcwele ukulawula i-acput ac voltage ngokuthinta imvamisa yokushintsha yensimu ye-tube. Inani eliphakeme le-Peak-to, Ngenkathi ukufakwa okulungisiwe kwamandla kagesi ajwayelekile we-Inverter Averter kungu-310V. Ukuze i-inverter ikhiphe i-220V Sine Wave ac Voltage ngaphandle kokuhlanekezela, I-DC Voltage phambi kwe-inverter kufanele ibe 680 ~ 870V. Ngoba i-voltage ejwayelekile yokufaka inverter incane kakhulu kunaleli nani, I-transformer ekhiphayo kufanele ingezwe ukukhulisa i-Inverter Output VolTage ngenhla kwenani eliphakeme elilinganiselwe ngaphambi kokuthi lisetshenziswe, Njengoba kukhonjisiwe kuMfanekiso 3.
Lesi sifunda samukela isakhiwo sesekethe sesekethe esigcwele. Ukukhishwa kwalesi siguquli akuyona intambo eyodwa ebukhoma nocingo olulodwa olungathathi hlangothi, Kepha izintambo ezimbili ezibukhoma. Nokho, Intambo engathathi hlangothi ngokuvamile iyadingeka lapho kuxhunywa komthwalo. Uma kungekho okukhishwa kokuguqulwa kwe-transformer kanye nocingo olubukhoma kuxhumeke ngokuqinile ku-neatter wire, Ukuphakelwa kwamandla oku-Inverter ngeke kusebenze kahle. Isibalo 4 ikhombisa ukuqondiswa kwamanje kokugeleza ngesikhathi segagasi elinamandla le-transformer engaphumi.
Kungabonakala kusuka kuMfanekiso 4 lokho ngenxa yokufinyelela komugqa ongathathi hlangothi, Umthwalo wamanje awudluliseli ngeshubhu elungisa inqubo ne-inverter power tube ngemuva kokudlula emthwalweni, Kepha ukugeleza ngqo emuva kwi-terminal yomugqa ongathathi hlangothi kwama-mains. Esimweni esinjalo, Thola i-tube ye-cexifier ne-inverter yamandla ebhokisini lamachashazi aphakathi awasebenzi. Ngokwenqubo ejwayelekile yokusebenza, Umthwalo wamanje kufanele ugeleze nge-tube efanele kanye ne-inverter power tube yemijikelezo emibili yebhuloho. Isibalo 5 ikhombisa ukuqondiswa kwamanje kokugeleza lapho kunegagasi elisheshayo le-transformer ekhiphayo. Lapho isiphetho sokuphuma sixhumeke ku-demolate transformer, umzuzwana (Layisha ukuphela kokufaka) ye-transformer ingaxhunywa kulayini ongathathi hlangothi kwamandla we-mains, Ngaleyo ndlela ukwakha uhlelo oluthembekile lokunikeza amandla. Kungabonakala ukuthi i-solate acking transformer iyingxenye ebalulekile ye-Inverter Bridge Circuit, Ukwenza isisekelo se-inverter sithembekile futhi sizinzile.
2.3 Isifunda sokuvikelwa
I-U3988 ine-voltage eyakhelwe ngaphakathi ekuvikelweni okungaphansi kokuvikelwa nokuvikelwa ngokweqile. Kudinga kuphela ukwahlukanisa amandla kagesi ngokusebenzisa abaphikisayo. Lapho i-voltage iphansi kune-voltage yereferensi, I-U3988 izokhiywa ukumisa ama-pulses okuphuma. Ngaphezu kwalokho, Mayelana nokuvikelwa kwamanje, Kuya ngomthwalo wamanje, Kunemisebenzi yokuvikela esiteji emithathu: Ukuvikelwa okusheshayo, ukubambezeleka okufushane nokubambezeleka okude.
3. Ukushiyeka kwe-Inverter Power Circuit
I-Isolate Transformer ixhunyiwe ngenhloso yokuguqula i-voltage futhi ihlukanise umugqa ongathathi hlangothi, futhi ayinawo umsebenzi wokuphazamiseka nokuguquguquka komthwalo. Kukhona ungqimba olufaka phakathi phakathi kwe-transformer eyinhloko neyesibili. Bakha i-capacitor c ngomthamo othile. Ukuphendula kweCapacive kwe-capacitor kulingana kakhulu ngokuvama kwemvamisa, leyo:
Efomula, I-XC ingukuphendula kwe-capacive kwe-capsacitance efanayo esatshalaliswa phakathi kwabaguquli abaphambili nabasekondari, in ω. f kungumvamisa wesiginali yokuphazanyiswa, Ku-Hz. C yi-capsacitance efanayo esatshalaliswa phakathi kwe-transformer eyinhloko neyesibili, ku f.
Kungabonakala kusuka ku-equation (1) ukuthi kukhuphuka imvamisa, Uma kuncane ukuphendula kwe-capacitive, leyo, Imvamisa ivama lesiginali yokuphazanyiswa, Kulula ngendlela ye-capacive ukuze udlule. Njengoba imvamisa yezimpawu ezijwayelekile zokuphazanyiswa ziphezulu kakhulu, zingaqhutshwa ngqo nge-transformer ukuze ziphazamise umthwalo. Uma kuzanywa imvamisa ephansi, Izoshintsha ukulalela kokuphazamiseka ngokulinganayo ngokuya ngesilinganiso senguquko ye-transformer. Njengoba i-transformer ingenawo umsebenzi wokulwa nokuphazamiseka, Izihlungi zokufaka nokukhipha ngokuvamile zingezwa kokufakwayo nokukhipha amaphethelo webhuloho le-inverter.
Ngenxa yokuxhumeka kwe-lolate transformer, Amadivaysi aphansi aphansi anjenge-inductor nama-capacitors azoxhunywa, okungagcini nje kuphela ngosayizi wesifunda uqobo kodwa futhi kwandisa ukusetshenziswa kwamandla kwesifunda futhi kunciphise ukusebenza kahle komjikelezo. Ngokuthuthuka kancane kancane kwama-high-frequency kanye namadivayisi aphansi aphansi afana nabaguquli be-elekthronikhi, Izindleko zokukhiqiza zama-super frequency transformers zikhuphuke kakhulu, kanye nezindleko zokukhiqiza zamabhodi wesifunda ezenzelwe lolu hlelo futhi kukhule ngokufanele.
4 Ukugcina
Ngokuhlaziywa okungenhla, Isakhiwo sesifunda kanye nezimpawu zokuhlinzekwa ngamandla kwamandla okusebenza kwamandla kwamandla kwethulwa ngokuphelele. Le ndali eklanyelwe ihlanganisa imisebenzi ethuthukisiwe yamadivayisi edijithali kanye nomsebenzi wokuhlukanisa we-Power Frequency Transformer ukufeza inhloso yokuzungeza umjikelezo olula nothembekile.