Mushure meanoda kusvika makore gumi ebudiriro, mota nyowani dzemagetsi dzakagadzira kumwe kuunganidza tekinoroji. Pane ruzivo rwakawanda mukugadzirwa kwezvikamu zvemotokari yemagetsi uye kusarudzwa uye kuenzanisa kwezvikamu. Pakati pavo, dhizaini ye precharge resistor mu precharge circuit inoda kufunga akawanda mamiriro uye mamiriro ekushanda. Kusarudzwa kweiyo precharge resistor inosarudza kumhanya kweiyo mota precharge nguva, saizi yenzvimbo inogarwa neprecharge resistor, uye kuchengetedzeka, kuvimbika, uye kugadzikana kwemagetsi emotokari akakwira-voltage.
Iyo precharge resistor inopikisa inochaja zvishoma nezvishoma iyo capacitor padanho rekutanga repamusoro-voltage simba-kumusoro remotokari. Kana pasina precharge resistor, yakawandisa yekuchaja ikozvino inopwanya iyo capacitor. High-voltage magetsi inoshandiswa zvakananga kune capacitor, iyo yakaenzana nekanguva pfupi pfupi. Kuwedzeredza pfupi-circuit ikozvino ichakuvadza high-voltage magetsi components.Saka, precharge resistor inofanira kuverengwa pakugadzira dunhu kuti ive nechokwadi chekuchengetedzwa kwedunhu.
Kune nzvimbo mbiri ukoprecharge resistorsanoshandiswa mumaseketi epakati nepamusoro-soro emotokari dzemagetsi, anoti mota inodzora precharge circuit uye yakakwira voltage accessory precharge circuit. Kune hombe capacitor mumotokari controller (inverter circuit), iyo inoda kubhadharwa kuti idzore iyo capacitor yekuchaja ikozvino. High-voltage accessories zvinowanzo sanganisira DCDC (DC converter), OBC (pa-board charger), PDU (high-voltage power distribution box), pombi yemafuta, pombi yemvura, AC (air conditioning compressor) nezvimwe zvinhu, uye kune zvakare. makuru capacitors mukati mezvikamu. , saka precharging inodiwa.
Precharge resistorsR, precharge time T, uye inodiwa precharge capacitor C, precharge nguva inowanzoita 3 kusvika 5 times RC, uye nguva yeprecharge kazhinji mamilliseconds. Naizvozvo, precharging inogona kupedzwa nekukasira uye haizokanganisa mota-yekudzora nzira. Mamiriro ekutonga kana precharging yapera ndeyekuti inosvika 90% yemagetsi bhatiri voltage (kazhinji ndizvo zvazviri). Paunosarudza precharge resistor, zvinotevera zvinofanirwa kutariswa: simba bhatiri voltage, contactor yakayerwa ikozvino, capacitor C kukosha, yakanyanya ambient tembiricha, kukwira kwekushisa kweanopikisa, voltage mushure mekuchaja, precharge nguva, insulation resistance value, pulse energy. Iyo yekuverenga fomula ye pulse simba hafu yechigadzirwa chechikwere che pulse voltage uye point capacitance C kukosha. Kana iri pulse inopfuurira, ipapo simba rose rinofanira kuva chiyero chemasimba ezviputi zvose.
