Patent AU-2020101658-A4 (AU)
Title: PV solar design software is a design tool assisting engineers/ solar designers in their grid connected PV systems design by performing detailed and lengthy calculations in accordance with Australian Standards and Clean energy Council guidelines. It reduces time,saves money and eliminates human errors. This software performs detailed technical calculation by calculating the PV array and inverter configuration and balance of systems. It calculates required system size (kW). Also performs financial calculations, proposes product specification and compares 2 different systems energy yields.
Inventor: EL AMMAR HANNA
IPC: H02J3/00
Filed: 2020-08-04
Granted: 2020-09-10
Abstract: This PV calculation software is a design tool used for grid connected PV system design by solar 
designers to achieve optimal outcome and in accordance with the latest Australian Standards and 
Clean Energy Council guidelines.  
The software consists of several parts, each part performs a different calculation. First part 
calculates the PV system Inverter and array configuration and also Balance of System(BOS) given 
specified inverter and PV module.  
Second part calculates required system size (kW) based on the required daily, monthly or annual 
yield (user to choose duration from drop down list)also can size it based on the percentage of energy 
to be reduced off total monthly energy consumption.  
Third part calculates the system lifecycle cost, lifecycle income($), return on investment (ROI) and 
Levelized cost of Electricity (LCoE).  
Fourth part proposes specification of inverter and PV module only by providing required system 
size(kW).  
Fifth part of the software compares 2 different systems by their annual yields and monthly energy 
yields shown on a chart to improve system performance by selecting most suitable products or by 
achieving the best PV module tilt and orientation angles.
RED COLOUR:INPUT 
FIGURES BLUECOLOUR:OUTPUT 
4-User inputs array configuration, cable 
1-User inputs inverter and PV length and required voltage drop. They wll 6-User can perform AC cab 
mod ule data from datasheets obtain Overcurrent protection rating, and voltage drop/rise calclto 
disconnector switch rating, cables sizes and 
W A actual voltage drop (in blue) 
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"calculate" button 3- 'Suggest Configuration" button wll 5Ue ilas banAryoe 
arranulgPIV modules and strings for voltage circuit and short circuit current 
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Figure-1: Matching Array and inverter and BOS calculation 
1-User inputs site location and desired 
PV module tilt and orientation angle 
2-User selects required daAimnthly 
or anualyie\ 
2-Another option to size the system by 
providing require d energy 
reduction/month 
|A -- i 
3-Clicking this button will calculate 3-licking this button will calculate 
required system size in kW based on required system size in kW based oni 
CEC tilt and orientation tables and CEC tilt and orientation tables and 
Bureau of Meteorology irradiation data, Bujreau of Meteorologv irradiation data 
Figure-2: Calculating required system size