DC / AC Ratio Optimizationย ยท DC / AC Ratio Optimization 3 ๐ ๐๐ ๐ = ๐ ๐...
Transcript of DC / AC Ratio Optimizationย ยท DC / AC Ratio Optimization 3 ๐ ๐๐ ๐ = ๐ ๐...
3 DC / AC Ratio Optimization
๐๐๐ค๐๐ ๐๐๐ก๐๐ =๐ ๐๐ก๐๐ ๐ด๐๐๐๐ฆ ๐๐๐ค๐๐ (๐ท๐ถ ๐๐)
๐ ๐๐ก๐๐ ๐ผ๐๐ฃ๐๐๐ก๐๐ ๐๐ข๐ก๐๐ข๐ก (๐ด๐ถ ๐๐)
๐๐๐ ๐, ๐ = ๐ ๐ก1 + ๐ ๐ก
๐
๐ก=0
DC / AC ratio or power ratio compares the photovoltaic array power to the inverter capacity:
Net present value is the summation of a time series of cash flows brought into the present:
4 DC / AC Ratio Optimization
As DC/AC ratio increases, the inverter is more likely to derate
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kW
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Effect of DC / AC Ratio on AC Output (100 kW inverter)
DC kW (1.33 DC / AC)
AC kW (1.33 DC / AC)
DC kW (1.16 DC / AC)
AC kW (1.16 DC / AC)
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Choosing the ideal DC / AC ratio that maximizes net present value is a moving target
Max NPV
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LA, no financing
Bldr, no financing
ABQ, no financing
HSV, no financing
SLV, no financing
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Examining how NPV and DC / AC ratio interact provides the following benefits: โข Inverter manufacturers can build a business case for new product
development around higher power ratios
โข Developers and designers can optimize system size based on NPV while adhering to existing design rules
โข Policy makers can see how taxes, incentives, and energy rates shift economic benefits
DC / AC Ratio Optimization