Chii chinonziMugadziri weSnubber?

Mumagetsi nemagetsi emazuva ano, zvishandiso zvekuchinja zvakaita sema transistors, thyristors (SCR), IGBTs, uye relay zvine basa rakakosha. Zvisinei, zvishandiso izvi zvinowanzosangana nekukwira kwemagetsi uye shanduko dzemagetsi dzinongoerekana dzaitika nekuda kweinductive loads, izvo zvinogona kukonzera kukuvara, kutadza kushanda zvakanaka, uye kukanganiswa kwemagetsi kusingadiwe (EMI). Apa ndipo panowanikwama capacitor asina basatanga kushanda.

Kunzwisisa Snubber Capacitors

A capacitor yesimbi isina chinhui capacitor yakasarudzika inoshandiswa muma snubber circuits kudzivirira zvishandiso zve switching kubva kuma voltage spikes uye transient currents. Nekupa imwe nzira yenguva pfupi ye current, snubber capacitors inobatsira mukuderedza kushushikana pa switching components, kuwedzera hupenyu hwadzo, uye kuvandudza kuvimbika kwe circuit.

Sei Madunhu eSnubber Achidiwa?

Maseketi eSnubber anoshandiswa mumhando dzakasiyana siyana, kusanganisira:

• Maseketi emagetsi- kudzvinyirira kukwira kwemagetsi.
• Madunhu eRelay necontactor- kuderedza kuumbwa kwe arc pakati pema contacts.
• Maswichi eSemiconductor (SCR, IGBT, GTO, nezvimwewo)- kuderedza kukwira kwemagetsi (dV/dt) uye kukwira kwemagetsi (di/dt), kudzivirira kukanganiswa kwenhema uye kutadza kwemudziyo.

Maseketi eSnubber Anoshanda Sei?

Maseketi eSnubber anowanzo kuve ne capacitor kana anetwork ye resistor-capacitor (RC)yakaiswa pamusoro pechishandiso chekuchinja.

• Kudzvinyirira Voltage Spike:Kana SCR kana transistor yadzima, mutoro weinductive unogadzira spike yemagetsi yakakwira. Capacitor inonyudza simba iri, ichidzivirira kushushikana kwemagetsi kwakawandisa.
• Kudzora dV/dt:Iyo capacitor inononotsa mwero wekukwira kwevoltage pa switch, ichidzivirira kuvhurika kusingatarisirwi (kukonzera nhema) mu thyristors nedzimwe semiconductors.
• Kudzora di/dt:Kuwedzera resistor yakatevedzana ne capacitor kunoderedza inrush current kana switch ikavhurwa, zvichidzivirira kushushikana kwakanyanya pachikamu.

Hunhu Hukuru hweSnubber Capacitors

Ma capacitor eSnubber akagadzirwa kuti agone kubata ma currents ane frequency yakakwira uye pulses dzinodzokorora. Hunhu hwawo hunokosha hunosanganisira:

• Kushanda kwakawanda kunobvumirwa (100 kHz kana kupfuura).
• Kudziya kushoma uye kurasikirwa kushoma.
• Kudzivirira kwakaderera kwezvikamu zvakaenzana (ESR) kuti simba rinyatsopinda mumuviri.
• Simba guru remagetsi uye kugona kwekutakura mitoro yenguva pfupi.

Mhando dzeSnubber Capacitors

Ma capacitor eSnubber anouya mumhando dzakasiyana zvichienderana nemazinga esimba uye zvinodiwa zvekushandisa:

• Ceramic Capacitors- Yakakodzera mashandisirwo ane simba shoma.
• Mafirimu epurasitiki epurasitiki- Inoshandiswa mumaseketi ane simba guru, kusanganisira masisitimu emagetsi emotokari (EV) uye mamota ekudzora.
• Zvigadziriso zvePolypropylene (MPP) zvesimbi- Yakagadzirirwa mashandisirwo emagetsi ane simba rakawanda uye ane inductance shoma.

Kusarudza Capacitor Yakakodzera Yekusveta

Kusarudzwa kwe snubber capacitor kunoenderana nezvinhu zvakaita se:

• Kukosha kwesimba:Kazhinji zvinobva pa0.1µF kusvika 10µF, zvichienderana nechinhu chinochinja uye load inductance.
• Kuyera kwevoltage:Inofanira kunge yakakwira kupfuura voltage yepamusoro yedunhu.
• ESR uye chiyero chemazuva ano:Inofanira kunge yakadzika zvakakwana kuti ikwanise kubata mafungu emvura asingadziye zvakanyanya.

MaCapacitor eSnubber Anoshandiswa Kupi?

Ma capacitor eSnubber anowanikwa mumaindasitiri akasiyana-siyana uye mashandisirwo, akadai se:

• Zvikamu zvemagetsi (PSUs)
• Mota dzemagetsi (EVs) uye maseketi ekudzora mota
• Masisitimu ekugadzira otomatiki emaindasitiri
• Masisitimu esimba rinogona kudzokororwa (ma solar inverters, ma wind turbines)

Mhedziso

Ma capacitor eSnubber anoita basa rakakosha mukudzivirira michina yekuchinja kubva kuma voltage spikes, kudzora ma transient currents, uye kusimudzira mashandiro e circuit yese. Sezvo magetsi emagetsi achiramba achifambira mberi, kudiwa kwema snubber capacitors anoshanda zvakanaka uye akavimbika kucharamba kuchikura. Ingave mumagetsi, ma industrial automation, kana mota dzemagetsi, ma capacitors aya anobatsira kuona kushanda zvakanaka uye kwakasimba muma circuit ane simba guru.