High mphamvu synchronous galimoto mwadzidzidzi braking luso

Pambuyo pozimitsa magetsi, injiniyo imafunikabe kusinthasintha kwa nthawi isanayime chifukwa cha inertia yake. M'malo ogwirira ntchito, katundu wina amafuna kuti injini iyime mwachangu, zomwe zimafunikira kuwongolera mabuleki agalimoto.Chomwe chimatchedwa braking ndikupatsa motor torque moyang'anizana ndi njira yozungulira kuti iime mwachangu.Pali mitundu iwiri ya mabuleki: makina amabuleki ndi mabuleki amagetsi.

Mabuleki amakina amagwiritsa ntchito makina amakina kuti amalize braking. Ambiri amagwiritsa ntchito mabuleki a electromagnetic, omwe amagwiritsa ntchito mphamvu yopangidwa ndi akasupe kukanikizira ma brake pads (nsapato za brake) kuti apange kugundana kwa mabuleki ndi ma wheel wheel.Mabuleki amakina amakhala odalirika kwambiri, koma amatulutsa kugwedezeka akamawomba, ndipo torque ya braking ndi yaying'ono. Amagwiritsidwa ntchito nthawi zambiri ndi inertia yaing'ono ndi torque.

Mabuleki amagetsi amapanga torque yamagetsi yomwe imatsutsana ndi chiwongolero panthawi yoyimitsa galimoto, yomwe imakhala ngati mphamvu yoyimitsa injiniyo.Njira zamabuleki amagetsi zimaphatikizapo kubweza mabuleki, dynamic braking, ndi regenerative braking.Pakati pawo, reverse Connect braking nthawi zambiri amagwiritsidwa ntchito poyendetsa mwadzidzidzi ma motors otsika ndi ang'onoang'ono; regenerative braking ili ndi zofunikira zapadera zosinthira pafupipafupi. Nthawi zambiri, ma motors ang'onoang'ono ndi apakatikati amagwiritsidwa ntchito poyendetsa mwadzidzidzi. Kuchita kwa braking ndikwabwino, koma mtengo wake ndi wokwera kwambiri, ndipo gululi lamagetsi liyenera kuvomereza. Kuyankha kwamphamvu kumapangitsa kuti zikhale zosatheka kuphwanya ma mota amphamvu kwambiri.

Malinga ndi malo a braking resistor, mabuleki owononga mphamvu amatha kugawidwa kukhala mabuleki owononga mphamvu a DC ndi mabuleki owononga mphamvu a AC. DC yowononga mphamvu ya braking resistor iyenera kulumikizidwa ku mbali ya DC ya inverter ndipo imangogwira ntchito kwa ma inverters okhala ndi basi wamba ya DC. Pachifukwa ichi, AC mphamvu yowonongeka braking resistor imalumikizidwa mwachindunji ndi galimoto kumbali ya AC, yomwe ili ndi ntchito zambiri.

Cholepheretsa cha braking chimapangidwa kumbali ya mota kuti idye mphamvu yagalimoto kuti ifike kuyima mwachangu kwa mota. Chowotcha chamagetsi chamagetsi champhamvu kwambiri chimapangidwa pakati pa braking resistor ndi mota. Nthawi zonse, chowotcha dera la vacuum chili pamalo otseguka ndipo mota ndiyabwinobwino. Kuthamanga kwa liwiro kapena kugwiritsira ntchito mphamvu pafupipafupi, mwadzidzidzi, chowotcha chamagetsi pakati pa mota ndi chosinthira pafupipafupi kapena gridi yamagetsi chimatsegulidwa, ndipo chowotcha chotchinga pakati pa mota ndi braking resistor chimatsekedwa, ndipo kugwiritsa ntchito mphamvu ma braking a motor amachitika kudzera pa braking resistor. , potero kukwaniritsa zotsatira za kuyimitsa magalimoto mwachangu.Chithunzi cha mzere umodzi wa system ndi motere:

Chithunzi cha Emergency Brake One Line

Mumayendedwe adzidzidzi braking, ndipo molingana ndi nthawi yocheperako, mphamvu yapano imasinthidwa kuti isinthe ma stator pano ndi ma braking torque ya motor synchronous motor, potero imakwaniritsa kuwongolera kofulumira komanso kosinthika kwagalimoto.

Mu ntchito yoyesa bedi, popeza gululi lamagetsi la fakitale silimalola kuyankha kwamagetsi, pofuna kuwonetsetsa kuti mphamvu yamagetsi imatha kuyima motetezeka mkati mwa nthawi yodziwika (osakwana masekondi 300) pakagwa mwadzidzidzi, kuyimitsa kwadzidzidzi kutengera mphamvu yamphamvu. kugwiritsa ntchito braking kudakhazikitsidwa.

Dongosolo lamagetsi lamagetsi limaphatikizapo inverter yothamanga kwambiri, mota yamphamvu kwambiri yokhotakhota iwiri, chipangizo chothamangitsira, ma seti 2 a ma braking resistors, ndi makabati 4 othamanga kwambiri. High-voltage inverter imagwiritsidwa ntchito kuzindikira ma frequency osinthika ndikuwongolera liwiro la mota yamagetsi apamwamba. Zipangizo zowongolera ndi zosangalatsa zimagwiritsidwa ntchito popereka chisangalalo cha injini, ndipo makabati anayi othamanga kwambiri ozungulira magetsi amagwiritsidwa ntchito kuzindikira kusintha kwa liwiro la kutembenuka kwafupipafupi komanso kuthamanga kwagalimoto.

Panthawi yophulika mwadzidzidzi, makabati othamanga kwambiri AH15 ndi AH25 amatsegulidwa, makabati amphamvu kwambiri AH13 ndi AH23 amatsekedwa, ndipo chopinga cha braking chimayamba kugwira ntchito. The schematic chithunzi cha braking system ndi motere:

Braking system schematic chithunzi

Magawo aukadaulo a gawo lililonse resistor (R1A, R1B, R1C, R2A, R2B, R2C,) ali motere:

Tekinoloje iyi imagwiritsa ntchito braking yamagetsi kuti izindikire kuphulika kwa ma mota amphamvu kwambiri. Imagwiritsa ntchito momwe ma synchronous motors amagwirira ntchito komanso mfundo yogwiritsira ntchito mphamvu kuti aphwanye ma motors.

Panthawi yonse ya braking, torque ya braking imatha kuwongoleredwa ndikuwongolera mphamvu yapano. Mabuleki amagetsi ali ndi izi: