Lits'ebetsong tse sebetsang, hangata li-converter tsa frequency li hloka ho ba le li-reactors, li-filters, li-resistors tsa brake le li-brake unit ho netefatsa botsitso ba ts'ebetso ea tsona, ho lelefatsa bophelo ba lisebelisoa, le ho qoba litlamorao tse mpe ho grid ea motlakase le lisebelisoa. Tse latelang ke mesebetsi ea karolo ka 'ngoe le mabaka a eona:

1. Li-reactors
Hangata li-reactor li eketsoa ho kenyelletso kapa tlhahiso ea frequency converter. Mesebetsi ea bona ea mantlha ke:

Fokotsa li-harmonics le ho feto-fetoha ha hona joale: li-converter tsa maqhubu li tla hlahisa li-harmonics, haholo-holo li-harmonics tse tlaase-frequency (tse kang 5th le 7th harmonics). Li-harmonics tsena li tla baka ho fetoha ha hona joale, ho ama ts'ebetso ea motlakase le ho eketsa moroalo holim'a marang-rang a matla. Li-reactors li ka hatella li-harmonics tsena ka nepo le ho fokotsa tšusumetso ho grid ea matla le lisebelisoa tse ling.

Liphetoho tsa hona joale tse boreleli: li-reactors li ka fokotsa tšusumetso ea frequency converter frequency frequency ho ea hajoale, tsa etsa hore waveform ea hajoale e boreleli, 'me e thusa ho fokotsa li-harmonics tsa grid ea matla.

Fokotsa overvoltage le overcurrent: li-reactors li ka fokotsa ho etsahala ha overvoltage kapa overcurrent maemong a mang, ho sireletsa li-converter tsa maqhubu le li-motors hore li se ke tsa senyeha.

Mabaka a ho kenya: sireletsa lisebelisoa, fokotsa tšusumetso ea li-harmonics ho marang-rang a matla le lisebelisoa tsa motlakase, 'me u qobe ho fetoha ha maemo a phahameng le mathata a mangata.

2. Lisefe
Li-filters li sebelisoa hangata qetellong ea inverter. Mesebetsi ea bona ke:

Felisa li-harmonics tse phahameng-frequency: Lerata la phetoho e phahameng-frequency e hlahisoang ke inverter e ka kena-kenana le enjene le lisebelisoa tse ling tsa motlakase. Sesefa se ka ntlafatsa botsitso ba sistimi ka ho sefa lerata le phahameng haholo.

Ntlafatsa tikoloho ea ts'ebetso ea enjene: Sefahla se ka felisa tšusumetso ea li-harmonics tsa maqhubu a holimo ho enjene, ho qoba mathata a kang ho chesa haholo, ho thothomela le lerata la enjene, le ho ntlafatsa botsitso ba ts'ebetso ea enjene.

Ho fokotsa ho kena-kenana le motlakase (EMI): Sefahla se ka fokotsa tšitiso ea motlakase ka nepo, sa netefatsa hore lisebelisoa li kopana le maemo a lumellanang le motlakase (EMC) le ho qoba ho ama ts'ebetso e tloaelehileng ea lisebelisoa tse ling tsa elektroniki.

Mabaka a ho kenya: Fokotsa tšitiso e phahameng ea maqhubu le li-harmonics, ho ntlafatsa tikoloho ea motlakase ea sistimi, le ho sireletsa enjene le lisebelisoa tse ling ho tsoa tšitiso.

3. Braking Resistor
Li-resistors tsa braking hangata li sebelisoa hammoho le li-brake units. Mesebetsi ea bona ea mantlha ke:

Amoha matla a ho inchafatsa: Ha enjene e tsamaisoang ke inverter e emisa, inertia e potolohang ea enjene e tla fetola matla a kinetic ho matla a motlakase ebe e e khutlisetsa ho inverter. Haeba ho se na mehato e nkuoang, matla a matla a ho nchafatsa a ka etsa hore voltage ea libese tsa DC e be holimo haholo mme e senye inverter. Braking resistor e ka monya matla ana a feteletseng 'me ea a fetola matla a mocheso, kahoo a thibela motlakase oa libese tsa DC hore o be holimo haholo.
Ntlafatsa phello ea braking: Lits'ebetsong tsa lebelo le phahameng la koloi, mochini o thibelang braking o ka thusa ka nepo hore koloi e theohe kapele le ho thibela enjene hore e se ke ea hlahisa motlakase o phahameng haholo ka lebaka la inertia ha e emisa.
Lebaka la ho kenya: Monya matla a nchafatsang a enjene ho netefatsa ts'ebetso e bolokehileng ea inverter le enjene, haholo lits'ebetsong tse qalang / ho emisa khafetsa.

4. Setsi sa Braking
Setsi sa braking se sebelisoa hammoho le sehanyetsi sa braking. E ikarabella haholo bakeng sa ho laola le ho lokisa mosebetsi oa "braking resistor":

Laola motlakase oa libese tsa DC: Ha inverter e sebetsa, inertia ea enjene e ka fepa matla a mangata haholo ka beseng ea DC, ea etsa hore motlakase oa libese o eketsehe. Mosebetsi oa yuniti ea braking ke ho lekola motlakase oa libese tsa DC. Ha motlakase o le holimo haholo, ka bohona o etsa hore mochini oa braking o monye matla a mangata ho thibela motlakase oa libese ho feta maemo.
Fana ka braking e potlakileng: Yuniti ea braking le sehanyetsi li sebetsa 'moho ho thusa inverter ho sebelisa matla a mangata kapele ha enjene e emisa kapa e khutlisa brake, ho fokotsa nako ea ho emisa enjene, le ho ntlafatsa ts'ebetso ea sistimi ea taolo.
Mabaka a ho kenya: Laola ho khutla ha matla a nchafatsang, sireletsa inverter ho voltage e feteletseng, 'me u netefatse hore braking ea koloi e potlakile ebile e bolokehile.

Kakaretso
Ts'ebetsong ea 'nete ea inverter, ho kenya li-reactors, li-filters, li-resistors tsa brake le li-brake units li ka:
Hatella li-harmonics ka katleho, fokotsa tšitiso ea motlakase, 'me u netefatse botsitso ba lisebelisoa le li-grid tsa matla.
Ntlafatsa ts'ebetso le bophelo ba ts'ebetso ea makoloi, 'me u fokotse mathata a kang mocheso o feteletseng, lerata le ho thothomela ho bakoang ke lerata le phahameng haholo.
Sebelisa matla a ho nchafatsa motlakase, thibela motlakase oa libese oa inverter DC hore o se ke oa phahama haholo, 'me o netefatse ts'ebetso e bolokehileng le e tsitsitseng ea sistimi.
Ka hona, tlhophiso e loketseng ea likarolo tsena e ka ntlafatsa haholo ts'ebetso ea inverter, ea ntlafatsa polokeho ea sistimi, le ho lelefatsa bophelo ba ts'ebeletso ea lisebelisoa.
Ha o sebelisa variable frequency drive (VFD), ha se lits'ebetso tsohle tse hlokang ho kengoa li-reactor, li-filters, li-resistors tsa brake, le li-brake unit. Hore na likarolo tsena li hloka ho kenngoa ho ipapisitse le tikoloho e ikhethileng ea ts'ebeliso, litlhoko tsa sistimi, le maemo a ts'ebetso ea lisebelisoa. Mona ke mabaka a mang a tloaelehileng le maemo a ho eketsa likarolo tsena:

1. Maemo moo li-reactor li hlokahalang
Tšilafalo e phahameng ea grid harmonic: Ha inverter e sebelisoa tikolohong eo maemo a phepelo ea matla a marang-rang a sa tsitsang kapa grid e na le tšilafalo e matla ea harmonic, sekontiri se ka thusa ho fokotsa li-harmonics tse hlahisoang ke inverter switching frequency ho qoba ho baka tšilafalo e kholo ho grid.
Matla a phahameng a ho fetola matla: Ts'ebetsong ea li-inverter tse nang le matla a phahameng, haholo-holo li-inverters tse ka holimo ho 50kW, li-reactor li ka fokotsa ho fetoha ha hona joale ka katleho le ho fokotsa tšusumetso ho marang-rang le lisebelisoa.
Liphetoho tse kholo tsa grid voltage: Li-reactor li ka hatella ho fetoha ha motlakase oa grid ho netefatsa ts'ebetso e tloaelehileng ea inverter, haholo libakeng tseo motlakase oa grid o sa tsitsang kapa o fokolang.
Lisebelisoa tse tloaelehileng: li-inverters tse nang le matla a phahameng a matla a kang limela tsa motlakase, mechine e boima, le merafo; ho hlokahala tikoloho e thata ea marang-rang ea indasteri.

2. Maemo moo ho hlokehang li-filters
Mathata a lerata le phahameng haholo ho li-drive tsa makoloi: Lerata le feto-fetohang le phahameng haholo le hlahisoang ke inverter le ka baka tšitiso ea motlakase (EMI) ho enjene le lisebelisoa tse haufi tsa elektroniki. Haeba sesebelisoa sa hau se hloka ho fokotsa tšitiso ea motlakase, kapa haeba lisebelisoa tsa elektroniki tse hlokolosi (joalo ka li-PLC, li-sensor, joalo-joalo) li sebetsa haufi, li-filters li bohlokoa haholo.
Ikamahanya le litlhokahalo tsa khokahano ea motlakase (EMC): Haeba lisebelisoa li hloka ho fihlela litekanyetso tse thata tsa EMC, sefahla se ka fokotsa ka nepo tšitiso ea mahlaseli a motlakase le conduction ho netefatsa hore sesebelisoa se kopana le litekanyetso tsa naha kapa tsa machabeng tsa tumellano ea motlakase.
Ntlafatsa ts'ebetso ea enjene: Haeba inverter e khanna enjene 'me ho na le mathata a kang ho futhumala ha motlakase, lerata le ntseng le eketseha kapa ho sisinyeha, sefahla se ka fokotsa tšusumetso e bakoang ke li-harmonics tsa maqhubu a phahameng.
Lisebelisoa tse tloahelehileng: Likopo tse nang le litlhokahalo tse tiileng mabapi le tšitiso ea motlakase, joalo ka tlhahiso ea boleng bo holimo, lisebelisoa tsa laboratori, lisebelisoa tsa puisano, lisebelisoa tsa bongaka, jj.

3. Maemo moo ho hlokahalang li-resistars tsa mariki
Litlhoko tsa khafetsa tsa ho qala / ho emisa kapa ho koala: Maemong ao ho ona ho hlokahalang ho qala le ho emisa khafetsa, matla a nchafatso a hlahisoang ke enjene ka lebaka la inertia a ka etsa hore motlakase oa libese tsa DC o nyolohe haholo. Ka nako ena, ho hlokahala "brake resistor" ho monya karolo ena ea matla ho thibela motlakase ho feta maemo le ho netefatsa ts'ebetso e tloaelehileng ea inverter.
Lisebelisoa tse phahameng tse nang le ts'ebetso ea nako e telele: Haeba mojaro oa enjene o le moholo mme o sebetsa nako e telele, haholo ha enjene e theoha kapa e emisa, e ka hlahisa matla a maholo a morao. Brake resistor e ka thibela motlakase hore o se ke oa hlahisa matla a feteletseng ka lebaka la inertia.
Lisebelisoa tse hlokang ho tima ka potlako kapa ho fokotsa lebelo la mojaro: Ka mohlala, lits'ebetsong tse kang li-conveyor tsa mabanta le li-lifti tse hlokang ho tima ka potlako, li-resistors tsa brake li ka potlakisa ho theola lebelo la koloi le ho khutsufatsa nako ea ho emisa.
Lisebelisoa tse tloaelehileng: li-cranes, mabanta a tsamaisang thepa, mechini ea masela, li-lifti, li-fan le lipompo tse qalang le ho emisa kapele, joalo-joalo.
4. Maemo moo ho hlokehang li-brake unit
Liketsahalo moo matla a nchafatsang a hlokang ho laoloa: Ha enjene e hloka ho sebelisoa molemong oa ho emisa ka potlako kapa ho khutlela morao, motlakase oa libese tsa DC o kanna oa ba holimo haholo. Setsi sa brake se ka lekola le ho laola motlakase ona ho netefatsa hore ha o bake tšenyo ho inverter.
Matla a tsosolositsoeng a feptjoang ke motlakase ke a maholo: Bakeng sa li-inverters tse matla a phahameng, haholo-holo ka meroalo e meholo ea inertia e kang li-fan, lipompo, mechine e boima, joalo-joalo, matla a ho tsosolosa a hlahisoang ke motor inertia e kholo. Setsi sa brake se sebelisoa hammoho le "brake resistor" ho etsa bonnete ba hore matla a ho tsosolosa a kenngoa hantle 'me a qoba ho hlōleha ho bakoang ke motlakase o feteletseng.
Ho sebetsa tlas'a mojaro o phahameng le maemo a phahameng a matla: Ka mohlala, maemong ao ho 'ona ho hlokahalang liphetoho tsa lebelo khafetsa (joalo ka li-lifti le li-cranes), yuniti ea brake e ka thusa ka potlako ho sebelisa matla a maikutlo le ho sireletsa inverter le motor.
Lits'ebetso tse tloaelehileng: litsamaiso tse phahameng tsa karabelo tsa makoloi, joalo ka lilifti, likerene, li-conveyors tsa mabanta, likhoele tsa tlhahiso tse ikemetseng, jj.

Kakaretso:
Hangata likarolo tsena li hlokahala maemong a latelang:

Ha boleng ba marang-rang bo fokola, li-harmonics li kholo, kapa ho fetoha ha motlakase ho kholo, kenya mochine o sireletsang motlakase le marang-rang.

Ha ho na le litlhokahalo tse thata tsa ho kena-kenana le motlakase (EMI) kapa boreleli ba ts'ebetso ea enjene e hloka ho ntlafatsoa, ​​kenya sefe.
Bakeng sa lits'ebetso tse atisang ho qala / ho emisa kapa ho fokotseha ka potlako, hoa hlokahala ho kenya mochine oa brake le mochine oa brake ho thusa ho laola matla a ho tsosolosa maikutlo le ho netefatsa ts'ebetso e sireletsehileng ea inverter le motlakase.
Hore na likarolo tsena li hloka ho kenngoa ho itšetlehile ka litlhoko tse khethehileng tsa tsamaiso, mofuta oa mojaro, le sebaka sa ho sebetsa. Bakeng sa lits'ebetso tse nang le matla a phahameng, ho qala / ho emisa khafetsa, kapa litlhoko tse thata tsa tikoloho ea motlakase, likarolo tsena tse ling hangata li nahanoa.