Muchina uyu wakadonha mushure mekushanda kwechinguva.Chikonzero chii?Iyo frequency converter ine kodhi yekutadza here?Kana hongu, tarisa bhuku rekushandisa.Mazhinji acho ari over-current uye undervoltage.Kana zvakajairika, kukwesha kwemhepo-yakatonhorera inverter michina inogona kunge yakakura uye kushorwa kuchave kwakakura.Gadzirisa kukosha kwe-over-current zvishoma kana torque zvishoma.Usagadzirise zvakanyanya panguva imwe chete, zvichienderana neyakayerwa ikozvino yemota.Tarisa uone kana iyo yepamusoro-simba midziyo inotanga kana frequency converter yamira, zvichikonzera undervoltage.
Mhinduro uye chikonzero chekuongorora:
Chekutanga, iyo yekudzikisira nguva ye frequency converter inoiswa ipfupi.Kana iyo frequency converter ichikwevera mutoro wakakura, nguva yayo yekudzikisa inoiswa idiki.Munguva yekudzikisira maitiro, iyo inobuda frequency ye frequency converter inodonha nekukurumidza, nepo inertia yekuremedza yakakura, izvo zvinoita kuti kumhanya chaiko kwemota kukwire kupfuura kumhanya kunoenderana nekubuda frequency ye frequency converter, zvichiita kuti mota iri mu simba rekugadzira simba, nekudaro zvichikonzera iyo DC yekubatanidza voltage pakati peiyo frequency converter kuti iwedzere, ichisvika pachiyero chemuganho uye kutsika, Naizvozvo, makuru ma frequency converter anowanzo kuve akashongedzerwa ne overvoltage mazwi ekugadzirisa zvikamu.
Chechipiri, kana mota dzakawanda dzichityaira mutoro wakafanana, nekuti hapana kugoverwa kwemutoro, kana kumhanya chaiko kwemota imwe kuchipfuura kumhanya kweimwe mota, kumhanya kwakakwira kwakaenzana neyekutanga mover, uye yakaderera kumhanya yakaenzana jenareta, izvo zvinogona kukonzera kukanganisa kwepamusoro-voltage.
Chechitatu, nekuda kwehupenyu hwe capacitor yepakati DC link ye frequency converter, mushure memakore ekushandiswa, iyo capacitor simba inodzikira, uye kugona kugadzirisa kweyepakati DC link kune DC voltage inodzikira, uye mukana wekukwira kweovervoltage unowedzera.Mukushanda kunoshanda, chinhu chechipiri chinowedzera.Tora shanduko yeladle trolley yeRh yekunatsa choto semuenzaniso.Inotyairwa nemota mbiri dzine mutoro wakafanana.Overvoltage alarm kutadza kunowanzoitika panguva yekushanda, uye iyo inoshandura yakafanana kazhinji inorira.Kuburikidza nekutarisa, kukosha kwevoltage yepakati DC chinongedzo cheshanduko chakakwira pane yakakwira frequency panguva yekushanda.Kuburikidza nekuongorora, kumhanya chaiko kweimwe mota kwakakwira kupfuura kumhanya chaiko kweimwe mota, zvichiita kuti ishande musimba rekugadzira magetsi, Uye iyo yepakati DC link inoshandisa ichi chikamu chesimba zvakanyanya, izvo zvinotungamira kune yakawandisa voltage yemagetsi. yepakati DC chinongedzo cheiyo frequency converter, uye iyo over-voltage kukanganisa kunoshumwa.
Nguva yekutumira: Zvita-06-2022