1 Kev sib xyaw ntawm PCS
PCS, Raws li cov ntsiab lus tseem ceeb ntawm lub zog cia, nws txuas nrog DC / AC bidirectional converters thiab tswj units. Nws cov maub los tau txais cov lus txib sab nraud los ntawm cov txheej txheem kev sib txuas lus siab, ntse txheeb xyuas cov kev xav tau ntawm lub zog, tswj cov roj teeb kom raug thiab tshem tawm cov txheej txheem, thiab ua tiav kev hloov pauv hloov pauv ntawm lub zog thiab rov ua haujlwm hauv daim phiaj hluav taws xob. Nyob rau tib lub sijhawm, nws sib koom tes nrog Lub Tuam Txhab Tswjhwm Roj Teeb (BMS) los ntawm CAN interface los saib xyuas cov roj teeb hauv lub sijhawm tiag tiag, ua kom muaj kev nyab xeeb thiab ua haujlwm zoo ntawm lub roj teeb.
2 Kev Ntsuam Xyuas Kom Paub Txog PCS Internal Structure
1. DC sab
Raws li lub zog nkag ntawm PCS, DC sab yog lub luag haujlwm los khaws DC lub zog hluav taws xob los ntawm lub roj teeb pob. Cov khoom tseem ceeb muaj xws li:
(1) DC tsheb npav: Ua los ntawm cov hlau tsis muaj zog lossis txhuas los xyuas kom muaj kev sib kis ntawm hluav taws xob zoo.
(2) Capacitor: Raws li qhov tsis sib xws, nws sib npaug ntawm qhov hloov pauv hloov pauv thiab muab kev txhawb zog ruaj khov.
(3) Inductance: Lim tawm qhov siab-frequency pulsation, du DC tso zis, thiab txhim kho cov lus teb ceev.
2. Kev sib txuas lus sab
AC sab hloov DC lub zog hluav taws xob rau hauv AC hluav taws xob hluav taws xob thiab muab nws rau hauv daim phiaj lossis thauj khoom siv. Cov khoom tseem ceeb muaj xws li:
(1) Inverter: Siv high-efficiency IGBT thiab lwm yam khoom siv, nws ua tiav DC rau AC hloov dua siab tshiab los ntawm kev tswj cov xwm txheej hloov, thiab txhawb kev hloov pauv hloov ntawm zaus thiab voltage.
(2) Lim: Ua tau zoo lim tawm cov suab nrov nrov thiab kev sib haum xeeb hauv cov zis inverter, kom ntseeg tau tias muaj qhov tso tawm ntshiab thiab ruaj khov voltage waveform.
(3) Cov zis transformer: Kho qhov voltage raws li qhov xav tau load thiab muab cov hluav taws xob tsim hluav taws xob tsim tawm.
3. Tswj qhov system
Raws li lub hub ntse ntawm PCS, lub kaw lus tswj yog lub luag haujlwm rau kev saib xyuas thiab tswj xyuas kev ua haujlwm ntawm tag nrho cov kab ke. Cov chav tseem ceeb muaj xws li:
(1) Cheebtsam tswj: Raws li kev ua tau zoo ntawm microprocessors lossis DSPs, kev saib xyuas lub sijhawm thiab kev ua haujlwm ntawm cov ntaub ntawv kaw lus, kho lub zog hloov pauv thiab tswj raws li cov tswv yim preset.
(2) Chav ntsuas: Ua kom raug sau cov ntsiab lus tseem ceeb xws li voltage, tam sim no, thiab zaus los muab cov ntaub ntawv txhawb nqa rau kev tswj hwm.
(3) Kev tiv thaiv chav tsev: Kev saib xyuas lub sijhawm tiag tiag ntawm cov xwm txheej txawv txav (xws li overcurrent, overvoltage, overtemperature), kev ua kom sai ntawm kev tiv thaiv kev tiv thaiv kom muaj kev nyab xeeb ntawm lub cev.
4. Kev sib txuas lus module
Kev sib txuas lus module tsim ib tus choj ntawm PCS thiab lub ntiaj teb sab nraud, txhawb kev saib xyuas thiab tswj cov chaw taws teeb, thiab txhim kho kev tswj xyuas thiab kev ruaj ntseg ntawm lub kaw lus.
Cov qauv sab hauv ntawm lub zog cia inverter yog qhov zoo heev, muaj plaub yam tseem ceeb: DC interface, AC hloov dua siab tshiab davhlau ya nyob twg, ntse tswj qhov system, thiab kev sib txuas lus choj module. DC interface tsom rau kev txais tos thiab khaws cia ntawm DC lub zog hluav taws xob, ua kom muaj kev ruaj ntseg ntawm lub zog nkag; Kev hloov pauv AC kawg yog lub luag haujlwm rau kev hloov pauv DC hluav taws xob zoo rau hauv AC hluav taws xob hluav taws xob, ua tiav cov khoom siv hluav taws xob hloov tau yooj yim. Cov kev tswj xyuas ntse ua haujlwm ua lub hauv paus hub, kev saib xyuas zoo thiab tswj xyuas kev ua haujlwm ntawm tag nrho cov txheej txheem los xyuas kom meej qhov ua tau zoo thiab kev nyab xeeb ntawm cov txheej txheem hloov dua siab tshiab. Kev sib txuas lus choj module txhim khu kev sib txuas ntawm lub zog cia system, txhim kho tag nrho kev ntseeg siab thiab kev ruaj ntseg ntawm qhov system. Cov Cheebtsam no ua haujlwm zoo ua ke kom ua tiav kev ua tau zoo hauv kev hloov pauv hluav taws xob thiab kev tswj hwm lub zog cia inverters, tso lub hauv paus ruaj khov rau kev siv dav dav ntawm lub zog cia khoom.
3 PCS core Cheebtsam
1. Cov khoom siv hluav taws xob hluav taws xob, xws li IGBT, MOSFET, thiab lwm yam, yog qhov tseem ceeb rau kev hloov hluav taws xob thiab ua kom muaj txiaj ntsig zoo thiab raug tam sim no thiab kev tswj hluav taws xob.
2. Tswj Circuit Court: Integrated signal tau txais, ua, thiab tswj algorithms los xyuas kom meej tswj cov khoom siv hluav taws xob hluav taws xob.
3. Lub zog cia khoom: suav nrog cov roj teeb, supercapacitors, thiab lwm yam, tuaj yeem hloov kho tau yooj yim raws li daim ntawv thov kom ua tau raws li cov kev xav tau ntawm lub sijhawm ntev lossis lub zog cia.
4. Cov khoom siv hluav taws xob sib txuas: cov ntsiab lus tseem ceeb rau kev ua kom muaj kev sib kis tau zoo thiab muaj kev nyab xeeb ntawm cov hluav taws xob hluav taws xob, siv cov ntaub ntawv zoo los xyuas kom muaj kev ua haujlwm ruaj khov.
4 PCS yam ntxwv
1. Efficiency: Kev siv cov cuab yeej siv hluav taws xob zoo tshaj plaws kom ua tiav kev hloov pauv tau zoo thiab txhim kho kev siv hluav taws xob tag nrho.
2. Kev ruaj ntseg: Los ntawm cov tswv yim tswj kom meej, xyuas kom ruaj khov thiab txhim khu kev qha fais fab tso zis, thiab lav kev ua haujlwm du ntawm lub cev.
3. Kev ntseeg tau: Xaiv cov khoom zoo thiab cov qauv tsim kev ntseeg siab kom haum rau ntau qhov chaw thiab ua kom cov khoom siv ntev ntev.
4. Flexibility: Modular tsim, yooj yim rau kev nthuav dav thiab kho kom haum, ua tau raws li cov kev xav tau sib txawv hauv cov xwm txheej sib txawv.
Xaus
Nyob rau hauv cov ntsiab lus, lub zog cia inverters ua lub luag haujlwm tseem ceeb hauv thaj chaw ntawm lub zog cia khoom vim lawv cov kev ua haujlwm siab, kev ruaj ntseg, kev ntseeg tau, thiab kev yooj yim, tso lub hauv paus ruaj khov rau kev siv lub zog tauj dua tshiab.