Nakong ea ts'ebetso ea braking, tahlehelo ea kahare ea enjene le tahlehelo ea mojaro oa mochini ke hoo e ka bang 20% ea torque e lekantsoeng.
Ka hona, haeba torque e hlokahalang ea braking e ka tlase ho boleng bona, ha ho hlokahale hore ho be le mohanyetsi oa kantle oa braking.Ha "frequency converter" (VFD) e sebelisetsoang ho theola kapa ho theola boemo ba tšohanyetso ba moroalo o moholo oa inertia, enjene e sebetsa sebakeng sa phepelo ea motlakase mme e fetisetsa matla a mojaro ho potoloho ea DC ea VFD ka borokho ba inverter, e bakang motlakase oa libese tsa VFD. ho tsoha.
Ha e feta boleng bo itseng, converter ea maqhubu e tla tlaleha phoso ea overvoltage (deceleration overvoltage, tšohanyetso deceleration overvoltage).
E le ho thibela ketsahalo ena hore e se ke ea etsahala, ho lokela ho khethoa mochine oa braking.
Khetho eaBraking Resistorkhanyetso:
Boleng ba ho hanyetsa ha braking resistor ha boa lokela ho ba bo boholo haholo.Boleng bo feteletseng ba ho hanyetsa bo tla lebisa ho torque e sa lekaneng ea braking.Ka kakaretso e ka tlase ho kapa e lekana le boleng ba ho hanyetsa braking bo tsamaellanang le torque ea 100%.Khanyetso ea braking resistor ha ea lokela ho ba nyane haholo, mme ha ea lokela ho ba tlase ho boleng bo tlase bo lumelletsoeng ba mochini o thibelang braking.Ho ba le braking ho feteletseng ho ka senya yuniti e hahelletsoeng ka har'a braking ea inverter.
Khetho ea matla a ho hanyetsa braking:
Ka mor'a ho khetha boleng ba ho hanyetsa eaBraking Resistor, khetha matla a mohanyetsi oa braking ho latela sekhahla sa ts'ebeliso ea braking ea 15% le 30%.Ho nka mohlala oa 100kg e emisitsoeng ka mokhoa o ikemetseng, u sebelisa 11kW frequency converter, sekhahla sa ts'ebeliso ea brake e ka ba 15%: U ka khetha 62Ω braking resistor e tsamaellanang le "100% braking torque", ebe u khetha matla a braking. mohanyetsi.Ha ho buuoa ka "100% braking torque" le "15% braking utilization" litafole, matla a lumellanang le braking resistor ke 1.7kW, 'me a sebelisoang hangata ke 1.5kW kapa 2.0kW.Qetellong, khetha "62Ω, 1.5kW" kapa 2.0 kW braking resistance.
” E le hore e robehe kapele, “62Ω, 1.5kW braking resistor” e ka hokahana ka tsela e tshwanang, e lekanang le “31Ω, 3.0kW braking resistor”.
Leha ho le joalo, ho lokela ho hlokomeloa hore boleng ba ho qetela baBraking Resistor e hokahaneng pakeng tsa li-terminals tsa P+ le DB ha ea lokela ho ba ka tlase ho boleng bo tlase bo boletsoeng ba 30Ω.Tšebeliso ea Brake: Sena se bolela karo-karolelano ea nako e tlas'a brake ho ea ho nako eohle ea ts'ebetso.Sekhahla sa tšebeliso ea braking se lumella yuniti ea braking le mohanyetsi oa braking nako e lekaneng ea ho senya mocheso o hlahisoang nakong ea braking.Ka mohlala, haeba mochine o sebetsa metsotso e 50 'me o le boemong ba ho qhoma ka metsotso e 7.5, lebelo la ho koala ke 7.5/50 = 15%.
Bakeng sa liketsahalo tse hlokang braking khafetsa, joalo ka li-dehydrators, haeba sekhahla sa braking se feta 15% tafoleng, matla a mochini o thibelang mariki a hloka ho eketseha ka ho lekana ho latela maemo a itseng a ts'ebetso.Re tšepa hore phetolelo ena e na le thuso ho uena!
