Pakugwiritsa ntchito, ma frequency converter nthawi zambiri amafunika kukhala ndi ma reactors, zosefera, zoletsa ma brake ndi ma brake unit kuti zitsimikizire kukhazikika kwa magwiridwe antchito awo, kukulitsa moyo wa zida, ndikupewa kuwononga mphamvu pa gridi yamagetsi ndi zida. Zotsatirazi ndi ntchito za gawo lililonse ndi zifukwa zake:

1. Ma rector
Ma reactors nthawi zambiri amawonjezedwa kuzinthu kapena linanena bungwe la frequency Converter. Ntchito zawo zazikulu ndi izi:

Chepetsani ma harmonics ndi kusinthasintha kwamakono: otembenuza pafupipafupi amapanga ma harmonics, makamaka ma harmonics otsika (monga 5th ndi 7th harmonics). Ma harmonics awa amayambitsa kusinthasintha kwaposachedwa, kukhudza magwiridwe antchito agalimoto ndikuwonjezera kulemetsa pa gridi yamagetsi. Ma rectors amatha kupondereza ma harmonics awa ndikuchepetsa kukhudzidwa kwa gridi yamagetsi ndi zida zina.

Kusinthasintha kwaposachedwa: ma reactor amatha kuchepetsa kusinthasintha kwa ma frequency converter pakalipano, kupangitsa mawonekedwe apano kukhala osalala, ndikuthandizira kuchepetsa ma harmonics apano a gridi yamagetsi.

Chepetsani kuchulukirachulukira komanso kupitilira muyeso: ma reactor amatha kuchepetsa kuchulukirachulukira kapena kupitilira apo nthawi zina, kuteteza ma frequency converter ndi ma mota kuti asawonongeke.

Zifukwa zoyikira: kuteteza zida, kuchepetsa kukhudzidwa kwa ma harmonics pa gridi yamagetsi ndi zida zamagetsi, ndikupewa kusinthasintha kwapang'onopang'ono komanso mavuto opitilira muyeso.

2. Zosefera
Zosefera nthawi zambiri zimagwiritsidwa ntchito kumapeto kwa inverter. Ntchito zawo ndi:

Chotsani ma harmonics othamanga kwambiri: Phokoso lapamwamba kwambiri losinthika lopangidwa ndi inverter lingasokoneze injini ndi zida zina zamagetsi. Fyulutayo imatha kupititsa patsogolo kukhazikika kwadongosolo posefa phokoso lapamwamba kwambiri.

Sinthani malo ogwiritsira ntchito injini: Zosefera zimatha kuthetsa kukhudzika kwa ma harmonics apamwamba kwambiri pagalimoto, kupewa zovuta monga kutenthedwa, kugwedezeka, ndi phokoso la mota, ndikuwongolera kukhazikika kwagalimoto.

Kuchepetsa kusokoneza kwa electromagnetic (EMI): Zosefera zimatha kuchepetsa kusokoneza kwamagetsi, kuonetsetsa kuti zidazo zikukwaniritsa miyezo yamagetsi amagetsi (EMC), ndikupewa kukhudza magwiridwe antchito a zida zina zamagetsi.

Zifukwa zoyikira: Chepetsani kusokoneza kwanthawi yayitali ndi ma harmonics, sinthani malo amagetsi amagetsi, ndikuteteza mota ndi zida zina kuti zisasokonezedwe.

3. Braking Resistor
Ma braking resistors nthawi zambiri amagwiritsidwa ntchito limodzi ndi ma brake unit. Ntchito zawo zazikulu ndi izi:

Gwirani mphamvu zowonjezera: injini yoyendetsedwa ndi inverter ikayima, inertia yozungulira ya mota imatembenuza mphamvu ya kinetic kukhala mphamvu yamagetsi ndikuyibwezera ku inverter. Ngati palibe njira zomwe zingatsatidwe, mphamvu zowonjezera zowonjezera zitha kupangitsa kuti voliyumu ya basi ya DC ikhale yokwera kwambiri ndikuwononga inverter. Choletsa ma braking amatha kuyamwa mphamvu zochulukirapo ndikuzisintha kukhala mphamvu zotentha, motero kulepheretsa magetsi a basi ya DC kukhala okwera kwambiri.
Limbikitsani mphamvu ya braking: Pamagalimoto othamanga kwambiri, chotchingira mabuleki chimatha kuthandizira kuti injiniyo ichepe mwachangu ndikuletsa mota kuti isapangike mokwera kwambiri chifukwa cha inertia ikayima.
Chifukwa choyikira: Tengani mphamvu yobwezeretsanso injini kuti muwonetsetse kuti inverter ndi mota zikuyenda bwino, makamaka pamapulogalamu omwe amayamba / kuyimitsa pafupipafupi.

4. Mabuleki Unit
Chigawo cha braking chimagwiritsidwa ntchito molumikizana ndi braking resistor. Imakhala ndi udindo wowongolera ndikusintha ntchito ya braking resistor:

Yang'anirani magetsi a mabasi a DC: Inverter ikagwira ntchito, inertia ya injini imatha kudyetsa mphamvu zambiri mu basi ya DC, zomwe zimapangitsa kuti magetsi a basi achuluke. Ntchito ya braking unit ndikuwunika mphamvu ya basi ya DC. Mphamvu yamagetsi ikakwera kwambiri, imangoyambitsa chopinga cha braking kuti itenge mphamvu zochulukirapo kuti magetsi a basi asapitirire muyezo.
Perekani mabuleki othamanga: Chigawo cha braking ndi resistor chimagwirira ntchito limodzi kuti inverter igwiritse ntchito mphamvu zochulukirapo injini ikayimitsa kapena kubweza brake, kuchepetsa nthawi yoyimitsa mota, ndikuwongolera magwiridwe antchito amagetsi.
Zifukwa zoyikira: Yang'anirani kubwezeredwa kwa mphamvu zobwezeretsanso, tetezani inverter kumagetsi ochulukirapo, ndikuwonetsetsa kuti mabuleki agalimoto othamanga komanso otetezeka.

Chidule
Pogwiritsira ntchito inverter, kuyika kwa ma reactors, zosefera, ma brake resistors ndi mayunitsi a brake akhoza:
Kupondereza bwino ma harmonics, kuchepetsa kusokoneza kwa ma elekitiroma, ndikuwonetsetsa kukhazikika kwa zida ndi ma gridi amagetsi.
Sinthani magwiridwe antchito ndi moyo wamagalimoto, ndikuchepetsa mavuto monga kutenthedwa kwamoto, phokoso, ndi kugwedezeka komwe kumachitika chifukwa cha phokoso lambiri.
Yang'anani mphamvu zobwezeretsanso zamagalimoto, tetezani voliyumu ya mabasi ya inverter DC kuti ikhale yokwera kwambiri, ndikuwonetsetsa kuti dongosololi ndi lotetezeka komanso lokhazikika.
Choncho, kasinthidwe koyenera kwa zigawozi kungathe kusintha kwambiri ntchito ya inverter, kupititsa patsogolo chitetezo cha dongosolo, ndikuwonjezera moyo wautumiki wa zipangizo.
Mukamagwiritsa ntchito variable frequency drive (VFD), sizinthu zonse zomwe zimafunikira kukhazikitsa ma reactor, zosefera, zopinga mabuleki, ndi mabuleki mayunitsi. Kaya zigawozi ziyenera kukhazikitsidwa zimatengera malo omwe akugwiritsira ntchito, zofunikira zamakina, ndi zida zogwirira ntchito. Nazi zifukwa zodziwika komanso zochitika zowonjezera zigawo izi:

1. Mikhalidwe yomwe ma reactor amafunikira
Kuwonongeka kwakukulu kwa gridi ya harmonic: Pamene inverter imagwiritsidwa ntchito m'malo omwe magetsi amtundu wa gridi sakhazikika kapena gululi ili ndi kuipitsidwa kwamphamvu kwa harmonic, chowongoleracho chingathandize kuchepetsa ma harmonics opangidwa ndi ma inverter osintha pafupipafupi kuti asapangitse kuipitsa kwakukulu kwa gululi.
High inverter mphamvu: Pogwiritsira ntchito ma inverters apamwamba kwambiri, makamaka ma inverters pamwamba pa 50kW, ma reactors amatha kuchepetsa kusinthasintha kwamakono ndikuchepetsa mphamvu pa gululi ndi zipangizo.
Kusinthasintha kwakukulu kwamagetsi a gridi: Ma reactor amatha kupondereza kusinthasintha kwamagetsi a gridi kuti awonetsetse kuti inverter imagwira ntchito bwino, makamaka m'malo omwe magetsi a gridi ndi osakhazikika kapena osalimba.
Ntchito zofananira: ma inverters okhala ndi mphamvu zambiri monga magetsi, makina olemera, ndi migodi; malo okhwima a gridi yamafakitale amafunikira.

2. Mikhalidwe yomwe zosefera zimafunika
Mavuto aphokoso kwambiri pamagalimoto amagalimoto: Phokoso losinthika kwambiri lomwe limapangidwa ndi inverter lingayambitse kusokoneza kwamagetsi (EMI) pagalimoto ndi zida zamagetsi zozungulira. Ngati pulogalamu yanu ikufunika kuchepetsa kusokoneza kwamagetsi, kapena ngati zida zamagetsi (monga ma PLC, masensa, ndi zina zotero) zimagwira ntchito pafupi, zosefera ndizofunikira kwambiri.
Tsatirani zofunikira za electromagnetic compatibility (EMC): Ngati zidazo zikuyenera kukwaniritsa miyezo yolimba ya EMC, fyulutayo imatha kuchepetsa kusokoneza kwa ma radiation ndi ma conduction kuti zitsimikizire kuti zidazo zikukwaniritsa miyezo yapadziko lonse lapansi kapena yapadziko lonse lapansi.
Sinthani magwiridwe antchito agalimoto: Ngati inverter imayendetsa mota ndipo pamakhala zovuta monga kutenthedwa kwa mota, phokoso lambiri kapena kugwedezeka, fyulutayo imatha kuchepetsa kukhudzidwa komwe kumachitika chifukwa cha ma frequency apamwamba kwambiri.
Ntchito zofananira: Mapulogalamu omwe ali ndi zofunika kwambiri pakusokoneza ma elekitiroma, monga kupanga mwatsatanetsatane kwambiri, zida za labotale, zida zolumikizirana, zida zamankhwala, ndi zina zambiri.

3. Mikhalidwe yomwe ma resistors amabuleki amafunikira
Zomwe zimafunikira pakuyambira / kuyimitsa kapena kutsika pafupipafupi: Nthawi zambiri pamafunika kuyimitsa ndikuyimitsa, mphamvu yotsitsimutsa yopangidwa ndi mota chifukwa cha inertia imatha kupangitsa kuti magetsi a basi ya DC akwere kwambiri. Panthawiyi, choletsa ma brake chimafunika kuti chitenge gawo ili la mphamvu kuti voteji isapitirire muyezo ndikuwonetsetsa kuti inverter ikuyenda bwino.
Ntchito zolemetsa kwambiri zokhala ndi nthawi yayitali: Ngati katundu wagalimoto ndi wamkulu ndipo amayenda kwa nthawi yayitali, makamaka injini ikatsika kapena kuyima, imatha kupanga mphamvu yayikulu yosinthira. Chopinga cha brake chingalepheretse injini kuti isapange ma voltage ochulukirapo chifukwa cha inertia.
Mapulogalamu omwe amafunikira kuzimitsa mwachangu kapena kuchepetsa kuthamanga kwa magalimoto: Mwachitsanzo, pamapulogalamu monga zotengera malamba ndi ma elevator omwe amafunikira kutseka mwachangu, zoletsa mabuleki zimatha kufulumizitsa kuthamanga kwa injini ndikufupikitsa nthawi yoyima.
Ntchito zofananira: ma cranes, malamba otumizira, makina ansalu, zikepe, mafani ndi mapampu omwe amayamba ndikuyima mwachangu, ndi zina zambiri.
4. Mikhalidwe yomwe mayunitsi amabuleki amafunikira
Nthawi zina pomwe mphamvu yokonzanso imayenera kuwongoleredwa: injini ikafunika kugwiritsidwa ntchito ngati kuyimitsidwa mwachangu kapena kubweza mabuleki, magetsi amabasi a DC amatha kukhala okwera kwambiri. Chigawo cha brake chimatha kuyang'anira ndikuwongolera mphamvuyi kuti iwonetsetse kuti sichikuwononga inverter.
Mphamvu zotsitsimutsa zomwe zimadyetsedwa ndi injini ndi zazikulu: Kwa ma inverters amphamvu kwambiri, makamaka pa katundu wamkulu wa inertia monga mafani, mapampu, makina olemera, ndi zina zotero, mphamvu yotsitsimutsa yopangidwa ndi inertia yamoto ndi yaikulu. Chigawo cha brake chimagwiritsidwa ntchito limodzi ndi chopinga cha brake kuwonetsetsa kuti mphamvu yotsitsimutsa imatengedwa bwino ndikupewa kulephera komwe kumachitika chifukwa chamagetsi ochulukirapo.
Kugwira ntchito pansi pa katundu wambiri komanso kusinthasintha kwakukulu: Mwachitsanzo, pamene kusintha kwachangu kumafunika (monga ma elevator ndi ma cranes), ma brake unit angathandize kuwononga mphamvu zowonjezera ndikuteteza inverter ndi injini.
Ntchito zofananira: makina oyendetsa magalimoto apamwamba kwambiri, monga ma elevator, cranes, zotengera malamba, mizere yopangira makina, ndi zina zambiri.

Chidule:
Zigawo izi nthawi zambiri zimafunika pazochitika zotsatirazi:

Pamene gululi khalidwe ndi osauka, ma harmonics ndi lalikulu, kapena voteji kusinthasintha ndi lalikulu, ikani riyakitala kuteteza inverter ndi gululi.

Pakakhala zofunika kwambiri pakusokoneza ma electromagnetic (EMI) kapena kusalala kwa ma motor motor kuyenera kukonzedwa, yikani zosefera.
Pazogwiritsa ntchito poyambira / kuyimitsa pafupipafupi kapena kutsika mwachangu, ndikofunikira kukhazikitsa chopinga cha brake ndi cholumikizira kuti chithandizire kuwongolera mphamvu zotsitsimutsa ndikuwonetsetsa kuti inverter ndi mota zikuyenda bwino.
Kaya zigawozi ziyenera kukhazikitsidwa zimadalira zosowa zenizeni za dongosolo, mtundu wa katundu, ndi malo ogwira ntchito. Pazinthu zokhala ndi mphamvu zambiri, zoyambira / kuyimitsa pafupipafupi, kapena zofunikira zamphamvu zamagetsi zamagetsi, zida zowonjezera izi nthawi zambiri zimaganiziridwa.