DocumentCode :
121725
Title :
Electrically independent subcircuits for a seven-junction spectrum splitting photovoltaic module
Author :
Flowers, Cristofer A. ; Eisler, Carissa N. ; Atwater, Harry A.
Author_Institution :
California Inst. of Technol., Pasadena, CA, USA
fYear :
2014
fDate :
8-13 June 2014
Firstpage :
1339
Lastpage :
1343
Abstract :
An electrical system that facilitates independent electrical connection of subcells with different bandgaps is required in order to optimally extract two-terminal power generated by spectrum-splitting photovoltaics. We have designed such a system for a seven subcell spectrum-splitting module using commercially available electrical components. Modified detailed balance modeling of the subcells coupled with HSPICE circuit simulation results in 87.5% power-weighted average subcell-to-grid electrical efficiency. Additional analysis indicates electrical efficiencies in excess of 95% are possible with custom power conditioning components and appropriately designed contacts.
Keywords :
electrical contacts; photovoltaic power systems; power grids; power system planning; solar cells; HSPICE circuit simulation; balance modeling; electrical components; electrical system; independent electrical connection; power conditioning components; power-weighted average subcell-to-grid electrical efficiency; seven subcell spectrum-splitting module; seven-junction spectrum splitting photovoltaic module; subcircuits; Contacts; Integrated circuit interconnections; Integrated circuit modeling; Photonic band gap; Photovoltaic systems; Resistance; independent electrical connection; module electrical design; power conversion; spectrum splitting;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Photovoltaic Specialist Conference (PVSC), 2014 IEEE 40th
Conference_Location :
Denver, CO
Type :
conf
DOI :
10.1109/PVSC.2014.6925165
Filename :
6925165
Link To Document :
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