Working Principle of Off-Grid Solar Power Generation System
1. Photoelectric Conversion
When sunlight irradiates solar panels, based on the photovoltaic effect, semiconductor materials in the panels absorb photon energy, generating electron-hole pairs that form an electric current. This process converts solar energy into direct current (DC).
2. Charging Control
The DC power generated by the solar panels enters a controller, which monitors parameters (such as voltage and current) and adjusts the charging process from the panels to the battery. This ensures safe charging and prevents overcharging.
3. Energy Storage
The battery stores electrical energy through internal chemical reactions, converting it into chemical energy for storage. When sunlight is insufficient, it reverses the process, converting chemical energy back into electrical energy for output.
4. Inversion and Output
An inverter transforms the DC power from the battery into standard alternating current (AC). It also controls the quality of the output by regulating parameters like voltage and frequency to meet grid-standard requirements.
5. Load Power Supply
The AC power generated by the inverter is transmitted to various electrical loads to meet their power demands. The system dynamically balances and stabilizes the power supply according to real-time load requirements, ensuring stable operation.
PV module
Cell Type:Mono N-Type
No. of Cells:132pieces(6*22)
Module Dimensions:2382*1134*30mm
Weight:28.2KG
Pmax(W):625W
Vmpp(V):41.4V
Impp(A):16.61A
Voc(V):48.6V
Isc(A):17.54A
Lithium Battery(LFP)
Model:48V200AH
Size:440*602*250mm
DOD:80%
Life cycle:6000
Charge Voltage:56.8V
Discharge Voltage:44.8V
Max Charge/Discharge Current:50/100A
Design life:>10 year
Communication protocols):CAN,RS485
Safety Certificate:CE,TüV,IEC62619,UN38.3,ROHS
Product Feature:19 inch standardized design,3U height;
3.2V100AH square aluminum core,higher energy density;
Intelligent system control,more stable performance;
Extrusion design,longer life
Hybrid Storage Inverter
Specifications: 10KW/48V
Model: SEI-10K-SP
Number of units that can be paralleled: 1 to 6 units
Dimensions: 670440240mm
Weight: 37KG
Protection level: IP65
Operating temperature range: -25 to 60ºC, derating when the temperature is above 45ºC
Cooling method: Heat sink + intelligent air cooling
Warranty period: 5 years
Auxiliary materials
PV:PV1-F1*4mm²
Power distribution box:20KW
Auxiliary materials:Grounding, wire threading pipe, MC4 connector
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