Session 06
PV Systems – Part 2
Solar Modules
September 8, 2015
Session 06 Components
• PV System ComponentsoSolar cells – material considerationsoSolar modules – operation and manufacture
2
Learning Outcomes
• Review of types of solar cells• Review of construction and
manufacturing of solar modules• Introduction to module science and
technology• Consideration of module performance,
reliability, lifetime, and decommissioning
3
PV Systems: Definition
• A photovoltaic system (or PV system) is an engineered system that carries out these operations:o Absorption of incident solar radiationo Conversion of the absorbed solar energy to DC electrical energyo Controlled transfer of the DC electrical energy to a storage device
(such as an array of batteries) OR
o Controlled inversion of the DC electrical energy to AC electrical energy
o Controlled transfer of the electrical energy to electrical loads or to the electrical grid
PV Systems: Standard solar cell structure
Deutsche Gesellschaft für Sonnenenergie, Planning and Installing PV Systems
PV Systems: Standard solar cell structure
Maximum efficiency, with common PV materials
PV Systems: Solar Cell Types
Deutsche Gesellschaft für Sonnenenergie, Planning and Installing PV Systems
PV Systems: Solar cell fabrication
Deutsche Gesellschaft für Sonnenenergie, Planning and Installing PV Systems
PV Systems: Solar cell fabrication
Trina – Polycrystalline Silicon (poly-Si)https://www.youtube.com/watch?v=HPlpDXgc5T4
9
PV Systems: Solar cell fabrication
Suntech - Cell and Module Manufacturing:https://www.youtube.com/watch?v=IAufbqbUS6k
10
PV Systems: Amorphous-Si solar cell structure
Deutsche Gesellschaft für Sonnenenergie, Planning and Installing PV Systems
PV Systems: CdTe solar cell structure
Deutsche Gesellschaft für Sonnenenergie, Planning and Installing PV Systems
CdS
PV Systems: CIGS solar cell structure
Deutsche Gesellschaft für Sonnenenergie, Planning and Installing PV Systems
CIGS
PV Systems: CIGS solar cell structure
Deutsche Gesellschaft für Sonnenenergie, Planning and Installing PV Systems
PV Systems: Multi-Junction solar cell structure
Deutsche Gesellschaft für Sonnenenergie, Planning and Installing PV Systems
PV Systems: Multi-Junction solar cell concept
Deutsche Gesellschaft für Sonnenenergie, Planning and Installing PV Systems
PV Systems: Cell efficiencies
Deutsche Gesellschaft für Sonnenenergie, Planning and Installing PV Systems
PV Systems: poly-Si vs a-Si
Deutsche Gesellschaft für Sonnenenergie, Planning and Installing PV Systems
PV Systems: Cell material and structures
Deutsche Gesellschaft für Sonnenenergie, Planning and Installing PV Systems, Chapter 2(On reserve, Noble Library)
PV Systems: Solar cell I vs V
There is a relation between the current and the voltage of a solar cell:
Increasinglight
PV Systems: Need for the solar module
To increase the electrical power, solar cells are combined together (physically and electrically) into solar modules
6.5A, 0.6V, 4W 6.5A, 45V, 300W
PV Systems: Solar module I vs V
The relation between the current and the voltage of a solar module resemblesthat of the single solar cell:
Increasing light
60 solar cell module
PV Systems: Solar module construction
Solar cell electrical wiring
Edge view of module
PV Systems: Solar module construction
Suntech - Cell and Module Manufacturing:https://www.youtube.com/watch?v=IAufbqbUS6k
24
PV Systems: Solar module construction
Bosch – Solar Module Manufacturing:https://www.youtube.com/watch?v=CiYfcZJmBNE
25
PV Systems: Solar module operation
Deutsche Gesellschaft für Sonnenenergie, Planning and Installing PV Systems
