- 1. Voltage le ho bapisa hona joale
(1) Motlakase oa mekhahlelo e meraro (380V)
Khetho ea voltage e lekantsoeng: Matla a mamellang a thyristor e lokela ho ba bonyane makhetlo a 1.5 ho feta motlakase o sebetsang (o khothalletsoang hore o be ka holimo ho 600V) ho sebetsana le peak voltage le overvoltage ea nakoana.
Palo ea hona joale: Mehato e meraro ea hona joale e hloka ho baloa ho latela matla a kakaretso (joalo ka 48kW), 'me tekanyo e khothalletsoang ea hona joale ke makhetlo a 1.5 ho ea hona joale (joalo ka 73A load, khetha 125A-150A thyristor).
Taolo ea ho leka-lekanya: Mokhoa oa ho laola mehato e 'meli oa mekhahlelo e meraro o ka baka ho fokotseha ha matla le ho fetoha ha hona joale. Mojule oa taolo ea "zero crossing trigger" kapa phase-shift control module o hloka ho kengoa ho fokotsa tšitiso ea marang-rang a matla.
(2) Motlakase oa mekhahlelo e 'meli (380V)
Ho feto-fetoha ha motlakase: Motlakase oa mekhahlelo e 'meli ha e le hantle ke karolo e le' ngoe ea 380V, 'me thyristor ea bidirectional (e kang BTB series) e hloka ho khethoa,' me matla a ho mamella le ona a hloka ho ba ka holimo ho 600V.
Phetoho ea hona joale: Mokhahlelo oa mekhahlelo e 'meli o phahame ho feta oa mekhahlelo e meraro (e kang ea 13.6A bakeng sa mojaro oa 5kW), mme moeli o moholoanyane o lokela ho khethoa (joaloka ka holimo ho 30A).
2. Wiring le mekhoa ea ho qalisa
(1) mehala ea mekhahlelo e meraro:
Etsa bonnete ba hore mojule oa thyristor o kopantsoe ka letoto qetellong ea ho kenya line, 'me mohala oa pontšo oa trigger o tlameha ho ba o khutšoanyane le o arohaneng le mela e meng ho qoba ho kena-kenana. Haeba li-triggering tsa zero-cross (mokhoa o tiileng oa relay) o sebelisoa, li-harmonics li ka fokotsoa empa ho nepahala ha taolo ea matla ho hlokahala hore e be holimo; bakeng sa ts'ebetso ea "phase-shift", tlhokomelo e lokela ho lefshoa ho ts'ireletso ea sekhahla sa phetoho ea motlakase (du / dt), 'me ho lokela ho kenngoa potoloho ea resistor-capacitor (e kang 0.1μF capacitor + 10Ω resistor) e lokela ho kenngoa.
(2) Wiring ea mekhahlelo e 'meli:
Bidirectional thyristors e tlameha ho khetholla ka nepo pakeng tsa lipalo tsa T1 le T2, 'me letšoao la trigger pole (G) le tlameha ho lumellana le mojaro. Ho kgothaletswa hore o sebedise "optocoupler trigger" e ka thoko ho qoba khokahano e fosahetseng.
3. Ho senya mocheso le tšireletso
(1) Litlhoko tsa ho futhumatsa mocheso:
Ha motlakase o feta 5A, sekoti sa mocheso se tlameha ho kenngoa, 'me ho lokela ho sebelisoa mafura a mocheso ho netefatsa hore ho na le kamano e ntle. Thempereichara ea khetla e tlameha ho laoloa ka tlase ho 120 ℃, 'me ho qobelloa ho pholisa moea ho lokela ho sebelisoa ha ho hlokahala.
(2) Mehato ea ts'ireletso:
Tšireletso ea overvoltage: Li-varistors (joalo ka letoto la MYG) li monya matla a phahameng a nakoana.
Tšireletso ea overcurrent: fuse e fofang ka potlako e hokahane ka letoto la potoloho ea anode, 'me hona joale e lekantsoeng ke makhetlo a 1,25 ho feta thyristor.
Moeli oa sekhahla sa phetoho ea motlakase: marang-rang a tšoanang a RC damping (joalo ka 0.022μF/1000V capacitor).
4. Ntho ea matla le katleho
Tsamaisong ea mekhahlelo e meraro, taolo ea ho fetoha ha karolo e ka etsa hore matla a fokotsehe, 'me li-capacitor tsa matšeliso li hloka ho kenngoa ka lehlakoreng la transformer.
Sistimi ea mekhahlelo e 'meli e tloaelane le li-harmonics ka lebaka la ho se leka-lekane ha mojaro, ka hona ho khothaletsoa ho amohela trigger ea ho tšela zero kapa leano la taolo ea ho arolelana nako.
5. Lintlha tse ling
Keletso ea khetho: e etelletsa pele ho li-thyristors tsa modular (joalo ka mofuta oa Nokia), tse kopanyang ts'ebetso ea ts'ireletso le ts'ireletso le ho nolofatsa likhoele.
Tlhahlobo ea tlhokomelo: kamehla sebelisa multimeter ho lemoha boemo ba conduction ba thyristor ho qoba potoloho e khutšoanyane kapa potoloho e bulehileng; thibela tšebeliso ea megohmmeter ho etsa tlhahlobo ea insulation.
Haeba u batla ho tseba haholoanyane ka sehlahisoa sa rona, ka kopoiteanye le rona!
Nako ea poso: Jul-16-2025
