Core Test Requirements nyob rau hauv Photovoltaic Systems
Photovoltaic (PV) hlwb thiab inverters yog cov khoom tseem ceeb hauv lub hnub ci zog. Lawv qhov kev ua tau zoo cuam tshuam ncaj qha rau kev hloov pauv hluav taws xob, kev sib raug zoo ntawm kab sib chaws, thiab kev ntseeg tau ntawm qhov system. Lub hom phiaj tseem ceeb ntawm kev xeem muaj xws li:
I-V Curve Characterization: Muaj tseeb simulate hnub ci vaj huam sib luag tso zis nyob rau hauv txawv irradiance thiab kub tej yam kev mob
MPPT Efficiency Validation: Txheeb xyuas qhov muaj peev xwm ntawm qhov ntsuas hluav taws xob zoo li qub thiab zoo li qub (MPPT).
Daim phiaj ua raws cai: Xyuas kom cov inverters ua tau raws li cov qauv thoob ntiaj teb (xws li EN50530, UL 1741, CGC/GF004) rau voltage/frequency kam rau ua, harmonic distortion, thiab qis -voltage caij-los ntawm (LVRT)
Zog Yield Optimization: Txheeb xyuas qhov system stability nyob rau hauv ib nrab shading, laus, thiab huab cua puag ncig
Lub luag haujlwm tseem ceeb ntawm cov khoom siv hluav taws xob thiab hluav taws xob Loads
A. Programmable DC Power Supplies (PV Simulators)
Muaj nuj nqi: Ua raws li lub hnub ci vaj huam sib luag I-V nkhaus nrog siab precision.
Technical Parameters:4096- theem ntsug kev daws teeb meem (12-ntsis ADC), ua kom μV-theem teeb liab ntes. Dynamic IV nkhaus hloov nyob rau hauv 1s kom replicate ceev ceev ib puag ncig hloov.
Daim ntawv thov:
Multi-peak I-V nkhaus simulation rau ntxoov ntxoo PV arrays.Temperature coefficient tsom xam (-40℃txog 85℃).
B. Electronic Loads
Muaj nuj nqi: Simulate daim phiaj los yog roj teeb loads kom validate inverter kev ua tau zoo.
Cov yam ntxwv tseem ceeb:Consta nt Tam sim no (CC) / Tsis tu ncua Voltage (CV) / Constant Power (CP)Hom kev sib txawv load profiles.Harmonic txhaj tshuaj (txog 25th kev txiav txim) rau IEC 61000-4-13 kev xeem ua raws.
MPPT Algorithms:ICE Algorithm(Kev Txhim Kho Kev Ua Kom Zoo Ntxiv): Txo I/O latency rau<10ms, achieving 99.5% tracking accuracy.Real-time monitoring of VocVoc, IscIsc, PmaxPmax, and fill factor (FF).
Integrated Test Workflows
A. PV Cell Test
1. I-V Curve Acquisition:
- Siv OWH67 Series DC Power Supplies los tsim EN50530-raws txoj kab nkhaus.
2. Kev ntsuam xyuas kev ntxhov siab ib puag ncig:
- Muab cov khoom cua sov (-70℃-250 degree) nrog cov khoom siv hluav taws xob los ntsuas PID (muaj peev xwm ua kom puas tsuaj) thiab UV tsis kam.
B. Kev Ntsuas Inverter
Static MPPT Efficiency:
- Simulate ruaj khov irradiance tej yam kev mob siv preset Sandia nkhaus.
- Targeting >98% rau transformerless inverter.
Kev sib koom ua ke ntawm cov khoom siv hluav taws xob programmable thiab cov khoom siv hluav taws xob tsim cov pob txha ntawm PV kev sim, ua kom muaj tseeb simulation, kev siv tau zoo, thiab kev ua raws li kab sib chaws.
