Abahlinzeki bokulungisa okonga amandla ekheshi bakukhumbuza ukuthi emqhudelwaneni oshubile wemboni yekheshi, ngokuthuthuka okusheshayo kobuchwepheshe, izinto ezintsha ezihlukahlukene, izinqubo, nobuchwepheshe buhlala busetshenziswa kumakheshi, okubenza bathuthuke baye eziqondisweni eziphephile, ezisheshayo, nezihlakaniphe kakhulu. Isimo sokuvaleleka kwabantu ngenxa yokungasebenzi kahle kwekheshi silokhu sincipha usuku nosuku, kanti ngesikhathi esifanayo, inkinga yokuphazamiseka kwamandla ekheshi okudalwa yizici ezihlukahlukene iya ngokuya igqama. Ukuze kuncishiswe imiphumela emibi enhlalakahleni engokwengqondo neyomzimba yabagibeli abavaleleke, kuye kwavela izinto eziphuthumayo zamakheshi.
Eminyakeni yamuva nje, imishini yezimo eziphuthumayo ye-elevator ithuthuke kakhulu njengomkhiqizo ozimele we-electromechanical. Nakuba amagama amadivaysi anjalo abonwa emakethe namuhla ayahlukahluka, njengokuthi "idivaysi ye-elevator ephuthumayo", "i-elevator power outage automatic leveling control screen", "i-elevator power outage automatic recovery device", njll. Kukhona nemikhiqizo eminingi yomkhiqizo nabakhiqizi, kodwa isakhiwo sabo se-hardware nezimiso zokusebenza ziyafana ngokuyisisekelo. Lolu hlobo lwedivayisi yezimo eziphuthumayo zekheshi ngokuvamile luqukethe izingxenye ezimbalwa, okuhlanganisa ibhodi eliyinhloko lokulawula, ibhodi lokushaja, ibhodi le-inverter, ibhodi lesixhumi esibonakalayo, iphakethe lebhethri, kanye nokutholwa kokulandelana kwesigaba.
Uma kukhona ukucima kukagesi, ukulahleka kwesigaba, noma iphutha lokulandelana kwesigaba, idivayisi ephuthumayo yekheshi ithatha ngokuphelele ukulawula kwekheshi. Inqubo ethile yokusebenza iwukunqamula ukuxhumana phakathi kwekheshi namandla amakhulu lapho idivayisi yesimo esiphuthumayo yekheshi ithola ukuphela kukagesi, ukulahleka kwesigaba, noma iphutha lokulandelana kwesigaba. Thola ukuthi isixhumanisi ngasinye sesekhethi yokuphepha kwekheshi sijwayelekile, noma ngabe imoto yekheshi imiswe endaweni engeyona ileveli, nokuthi ingabe ilifthi isesimweni somsebenzi wokulungisa ngamasignali ayo okufakwayo. Ngemuva kokuthi imiphumela yokuhlolwa ihlangabezane nemibandela yokusebenza okuphuthumayo, ibhodi elishintshashintshayo liyaqalwa ngokushesha, futhi amandla kagesi ezinga ngalinye akhiqizwa inverter athunyelwa ngokuqondile ezingxenyeni ezihlukahlukene ezifana nomshini wokudonsa ikheshi, amabhuleki, umshini womnyango, njll. Idivayisi ephuthumayo yekheshi iqala ngokuhudula ikheshi ukuze ihambe kanye kuzo zombili izikhombisi-ndlela eziya phezulu naphansi, bese igijima ngesivinini esiphansi sokulondoloza lapho kufika indawo yokubeletha. Uma ikheshi imoto ifika endaweni yokuqala yokulinganisa lapho isebenza khona, yibeke izinga, uvule umnyango ukuze ukhulule abantu, bese uyeka ukusebenza.
Idivayisi yempendulo yezimo eziphuthumayo ye-PFU ihlanganisa ngokuzenzakalelayo umsebenzi wempendulo yekheshi nomsebenzi wokuphakelwa kwamandla eziphuthumayo wekheshi ibe yisistimu eyodwa, engafinyelela kokubili impendulo yekheshi kanye nokunikezwa kwamandla ezimo eziphuthumayo zekheshi. Ukwamukela ama-algorithms athuthukisiwe ukuze kuzuzwe impendulo ephelele ye-sine wave energy kanye nesigaba sesithathu sokukhishwa kwamandla ezimo eziphuthumayo. Ukuguqula amandla e-DC avuselelwe ngesikhathi sokusebenza kwekheshi ibe amandla e-AC avumelaniswe negridi yamandla futhi iwabuyisela kugridi ukuze kuzuzwe ukongiwa kwamandla. Ingase futhi inikeze amandla ezimo eziphuthumayo ezigaba ezintathu kukheshi ngemva kokuba igridi yamandla inqanyuliwe, ukufeza umsebenzi wokulinganisa okuphuthumayo kwekheshi. Idivayisi yempendulo yesimo esiphuthumayo se-PFU yekheshi ihlanganisa ngokuzenzakalelayo umsebenzi wempendulo yekheshi nomsebenzi wokuphakelwa kwamandla eziphuthumayo wesikheshi ibe yisistimu eyodwa, enganciphisa izindleko futhi ithuthukise ukwethembeka.
Izinzuzo eziyinhloko zedivayisi yempendulo ye-PFU lifti zimi kanje:
⑴ Inayo yonke imisebenzi yokuphakelwa kwamandla kwezimo eziphuthumayo zamakheshi ajwayelekile;
Ukusebenza kahle kokugaywa kabusha kwamandla kagesi avuselelwe kuphezulu ngokufika ku-97.5%, okunemiphumela ebalulekile yokonga amandla kanye nokusebenza kahle okonga kwamandla okungama-20-50%;
Idivayisi ifakwe ama-reactors nezihlungi zomsindo, ezingaxhunywa ngokuqondile kugridi yamandla ngaphandle kokubangela ukuphazamiseka kugridi yamandla kanye nezinto zikagesi ezizungezile;
Ukuphathwa kwebhethri okukhethekile kuqinisekisa ukuthi impilo yebhethri ingaphezu kokuphindwe kathathu kweontanga (amanye amadivaysi empendulo);
⑸ Ukwamukela ubuchwepheshe obuphambili obuningi, obuhambisana nazo zonke izinhlobo zeziguquli zefrikhwensi yekheshi;
Lapho ukunikezwa kwamandla kwe-PFU kuphazamiseka, kuqinisekisa ukuthi ilifti ima eduze noma ibuyela phansi futhi ivule umnyango. Uma ukunikezwa kwamandla kujwayelekile, kuyidivayisi yempendulo yokuvuselela amandla, futhi izinzuzo zezomnotho ezikhiqizwa phakathi nokuphila kwayo kwesevisi zidlula kude izindleko zokutshalwa kwezimali zamathuluzi;
Ukwamukela ubuchwepheshe bokuhlukanisa i-electromagnetic isolation ukuze uhlukanise ibhethri kugesi wezigaba ezintathu, ukuqinisekisa ukuphepha kwebhethri nesiguquli sefrikhwensi;
⑻ Ukwamukela iyunithi yokucubungula emaphakathi yebanga lamasosha enesivinini esikhulu se-DSP
Ukusebenza kahle kwempendulo, ukunemba kokulawula, ukuzinza okuhle, ukuvumelana okuncane, nekhono eliqinile lokulwa nokuphazamiseka;
Ukwamukela ubuchwepheshe bokushintshwa kwe-SVPWM
Ubuchwepheshe be-modulation ye-SVPWM bungafinyelela ukuguqulwa kwe-DC kuya ku-AC, kubuyisele ngokuphelele i-voltage yokuphuma kwezigaba ezintathu, futhi kukhiphe i-waveform yamanje ephelele ngomphumela we-superposition wezihlungi namagridi wamandla wezigaba ezintathu;
Ukwamukela ubuchwepheshe bokuhlunga be-LC
Ukucindezela ngokuphumelelayo i-harmonics kanye nokuphazanyiswa kwe-electromagnetic, nge-THD yamanje kanye ne-voltage <5%, ukuqinisekisa impendulo yamandla kagesi ahlanzekile;
⑾ Ukwamukela ubuchwepheshe bokubona okuzenzakalelayo kwesigaba sokulandelana
Ukulandelana kwesigaba segridi yamandla ezigaba ezintathu kungaxhunywa ngokukhululekile ngaphandle kwesidingo sokuhlukanisa okwenziwa ngesandla sokulandelana kwesigaba;
12. Yakhelwe nge-fuse
Isivikelo sesifunda esifushane sikhona ukuze kuqinisekiswe ukusebenza okuphephile kwekheshi;
13. Ingakwazi ukunqamula ngokuzenzakalelayo emaphutheni ukuze kuqinisekiswe ukusebenza okuvamile kwekheshi
Ayinamsebenzi nesistimu yokulawula yekheshi futhi ayishintshi indlela yokulawula yokuqala yekheshi;