Part 4 of 8 – Sizing and selection of the PV Array
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Grading method: Highest grade
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Question 1 of 5
1. Question
In this section you will size and match the PV array to the Fronius Primo Gen24 Plus inverter we have selected in the previous part. Refer to the design task instructions for site-specific information and temperatures. For a refresher of matching array and inverter refer to: Equipment Sizing and Selection => “Sizing PV Array” and “Matching the PV Array and Inverter Example”.
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a) Calculations for the maximum number of modules in the system:
i) Maximum DC power permitted based on inverter datasheet: kW
ii) Maximum total number of modules that can be connected to the inverter based on max power requirements (rounded):
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Question 2 of 5
2. Question
Please include your working out in this area.
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Question 3 of 5
3. Question
Qestion 2
Include your working here.
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Question 4 of 5
4. Question
Question 3
b) Calculations for sizing the minimum number of PV modules in a string, (perform all calculations to 2 decimal places):
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Question 5 of 5
5. Question
b) Calculations for sizing the minimum number of PV modules in a string, (perform all calculations to 2 decimal places):
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Inputs:
ii) What is the value of your selected voltage? V
iii) What is the temperature coefficient in %/°C? %/°C
iv) What is the module cell temperature? °C
v) What is the STC temperature value? °C
vi) What is the value of the inverter voltage you will use for this calculation? V
vii) What is the multiplying factor you will use for safety on the inverter voltage? (please input a decimal, not percent)Calculations:
viii) What is the difference in voltage due to the temperature adjustment? 6.88 V
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