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, mofetoleli oa maqhubu o tla tlaleha phoso ea overvoltage (deceleration overvoltage, ka 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%. Ho hanyetsa ha "braking resistor" ha hoa lokela ho ba nyenyane haholo, 'me ha hoa lokela ho ba ka tlaase ho bonyane ba boleng bo amohelehang ba mochine oa braking. Ho ba le braking ho feteletseng ho ka senya yuniti ea braking e hahelletsoeng kahare 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!
