Munguva yekugadzira mabhureki, kurasikirwa kwemukati kwemota uye kurasikirwa kwemakanika kunosvika makumi maviri muzana eiyo torque yakayerwa.
Naizvozvo, kana iyo inodiwa braking torque iri shoma pane iyi kukosha, hapana yekunze braking resistor inodiwa. Kana iyo frequency converter (VFD) ichishandiswa kudzikamisa kana kukurumidza kudzikisira mutoro mukuru we inertia, mota inoshanda munzvimbo yekugadzira magetsi uye inoendesa simba remutoro kudunhu reDC reVFD kuburikidza nebhiriji inverter, zvichikonzera VFD bhazi voltage. kusimuka.
Kana yadarika imwe kukosha, iyo frequency converter inoshuma kukanganisa kwe overvoltage (deceleration overvoltage, sudden deceleration overvoltage).
Kuti udzivise chiitiko ichi kuti chisaitike, braking resistor inofanira kusarudzwa.
Sarudzo yeBraking Resistorresistance:
Iko kukosha kwekupokana kweiyo braking resistor haifanire kunge yakakura. Kunyanya kupikisa kukosha kunotungamira mukusakwana braking torque. Iyo inowanzo ishoma pane kana kuenzana neiyo braking resistor resistance value inoenderana ne100% braking torque. Kupokana kweiyo braking resistor haifanire kunge yakanyanya kudiki, uye haifanirwe kuve yakaderera pane yakaderera inobvumidzwa kukosha kweiyo braking resistor. Yakawandisa braking ikozvino inogona kukuvadza yakavakirwa-mukati braking unit ye inverter.
Sarudzo ye braking resistor simba:
Mushure mekusarudza kukosha kwekupikisa kweBraking Resistor, sarudza simba reiyo braking resistor zvinoenderana neiyo braking utilization rate ye15% uye 30%. Kutora 100kg yakamiswa zvizere otomatiki dehydrator semuenzaniso, uchishandisa 11kW frequency converter, chiyero chekushandisa mabhureki chinenge 15%: Unogona kusarudza iyo 62Ω braking resistor inoenderana ne "100% braking torque", uye wozosarudza simba rebhureki. resistor. Tichitaura nezve "100% braking torque" uye "15% braking utilization" matafura, inoenderana braking resistor simba i1.7kW, uye anowanzo kushandiswa 1.5kW kana 2.0kW. Pakupedzisira, sarudza "62Ω, 1.5kW" kana 2.0 kW braking resistance.
” Kuitira kubhureki nekukurumidza, maviri “62Ω, 1.5kW braking resistors” anogona kubatanidzwa mune parallel, iyo yakaenzana ne “31Ω, 3.0kW braking resistor”.
Nekudaro, zvinofanirwa kucherechedzwa kuti iyo yekupedzisira kukosha kweiyoBraking Resistor yakabatana pakati peP+ neDB zviteshi hazvifanirwe kuve zvishoma pane yakataurwa kushomeka kushoma kukosha kwe30Ω. Kushandiswa kwebhureki: Izvi zvinoreva chiyero chenguva iri pasi pebhureki kusvika kunguva yese yekushandisa. Iyo braking utilization rate inobvumira iyo braking unit uye braking resistor nguva yakakwana yekubvisa kupisa kunogadzirwa panguva yekubhureki. Semuenzaniso, kana muchina ukashanda kwemaminetsi makumi mashanu uye uri munzvimbo yekubhureki kwemaminitsi 7.5, chiyero chebhureki 7.5/50 = 15%.
Kune zviitiko zvinoda kugara uchibhureki, senge dehydrators, kana mwero webhureki uchipfuura 15% patafura, simba reiyo braking resistor rinoda kuwedzerwa zvakaenzana zvichienderana nemamiriro ekushanda. Ndinovimba shanduro iyi inobatsira kwauri!
