Makina amagetsi amphamvu mu galimoto yamagetsi (EV) ali ndi ma capacitor osiyanasiyana.
Kuyambira ma capacitor a DC-link mpaka ma capacitor otetezeka ndi ma capacitor osasamala, zigawozi zimagwira ntchito yofunika kwambiri pakukhazikitsa ndikuteteza zamagetsi ku zinthu monga kukwera kwa magetsi ndi kusokonezeka kwa magetsi (EMI).
Pali ma topologies anayi akuluakulu a ma inverter ogwirizira mphamvu, omwe ali ndi kusiyana kutengera mtundu wa switch, voltage ndi milingo. Kusankha topology yoyenera ndi zigawo zina zokhudzana nayo ndikofunikira kwambiri popanga ma inverter ogwirizira mphamvu omwe amakwaniritsa zofunikira za pulogalamu yanu komanso mtengo wake.
Monga tafotokozera, pali ma topologies anayi omwe amagwiritsidwa ntchito kwambiri mu ma inverters a EV traction, monga momwe zasonyezedwera pa Chithunzi 2.
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Topology ya Level yokhala ndi switch ya 650V IGBT
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Topology ya Level yokhala ndi switch ya 650V SiC MOSFET
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Topology ya Level yokhala ndi switch ya 1200V SiC MOSFET
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Topology ya Level yokhala ndi 650V GaN Switch
Ma topologiya awa amagawidwa m'magulu awiri: Ma Powertrain a 400V ndi Ma Powertrain a 800V. Pakati pa magulu awiriwa, nthawi zambiri amagwiritsa ntchito ma topologiya a "magawo awiri". Ma topologiya a "magawo ambiri" amagwiritsidwa ntchito m'makina amphamvu kwambiri monga sitima zamagetsi, ma tramway ndi sitima koma satchuka kwambiri chifukwa cha mtengo wokwera komanso zovuta zake.
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Ma Capacitors Opepuka- Kuchepetsa mphamvu yamagetsi ndikofunikira kuteteza ma circuits ku ma spikes akuluakulu amagetsi. Ma capacitor a Snubber amalumikizana ndi node yosinthira mphamvu yamagetsi yapamwamba kuti ateteze zamagetsi ku ma spikes amagetsi.
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Ma Capacitor a DC-Link- Mu ntchito zama EV, Ma capacitor a DC-link amathandiza kuchepetsa zotsatira za inductance mu ma inverter. Amagwiranso ntchito ngati zosefera zomwe zimateteza ma EV subsystems ku ma voltage spikes, surges ndi EMI.
Ntchito zonsezi ndizofunikira kwambiri pa chitetezo ndi magwiridwe antchito a ma inverter ogwiritsira ntchito mphamvu, koma kapangidwe ndi zofunikira za ma capacitor awa zimasintha kutengera mtundu wa inverter yogwiritsira ntchito mphamvu yomwe mwasankha.
Nthawi yotumizira: Disembala-15-2023