Design of Grid-Tied Solar Power Systems for Optimal Energy Use

This project details the design of a grid-tied solar power system aimed at satisfying user needs through simplicity and affordability. The chosen interface facilitates easy usage by allowing users to control various options such as battery usage, grid connection, and solar panel operation via a clear display screen. A key benefit of this design is its cost-effectiveness, achieved by reducing the need for external batteries due to integration with the power grid, which also serves as a virtual battery. The system's ability to switch off during emergencies ensures compatibility in natural disasters, protecting against potential damage. Influential factors in the design include the grid-tie inverter and on/off buttons, enhancing functionality and safety. The absence of covers on solar panels is noted for cost reduction and efficiency improvement. Overall, this design offers a robust, affordable solution suitable for diverse environments, ensuring energy availability both day and night through grid integration when necessary.

Report
Way of Designing
The Grid-tied system is designed to make the solar system. It is designed by using a small
and a simple grid. An optional battery is also used for night in case of the excess use of the
power.
One screen is used in the solar system to display different settings. The solar system screen is
showing battery information, grid information etc. the DC to AC current conversion is being
done by the grid-tied inverter. There are different buttons provided to set different settings
e.g. battery setting, Grid setting etc. the buttons are used to on or off the battery, grid or
complete solar panel system.
The complete solar panel can also be switched off which is very necessary and beneficial to
escape from the natural disaster etc.
The system is designed in the way that is described above. It is satisfying all needs of the
users e.g. power on/off option, conversion of DC current to the AC current etc.
Reason to Choose the Specific Interface
This design is chosen because it is very simple, easy to use and very clear. Except all the
above features, following technical points are also kept in mind in choosing this design-
- Grid-tie solar system is cheaper than a without grid-tie solar system because it may
reduce the cost of external battery too.
- Excess energy goes to the grid by the grid-tie solar system that can be used later.
- Grids work as virtual batteries that reduce the cost of the external battery.
Accomplishing the User Requirements
A user finds so many requirements in a solar system like below-
Easy to Use
The solar system should be easy to use. The screen is showing each option clearly e.g. `
battery usage, grid, solar panel etc. The user can switch on/off all options very easily as all
are visible in front of the user.
Affordable
The chosen solar system design is very affordable. It is very low cost in budget. All functions
are given on reasonable price.

Compatible in Natural Disaster
The system is compatible in natural disaster as the user can switch off the solar system in
case of emergency. It will not damage anything in the solar system.
Influenced Factors in the Chosen Solar System Design
There are so many factors that are influencing the chosen solar system design-
- Grid-tie inverter
- Switch On/Off buttons
- Solar screen display
- External battery
All the above factors are very interesting and useful in the solar system design. Sun light
enters into the solar panels and after that redirects to the grid-tie inverter. That converts the
DC current to the AC current that is perfect to be used in the house or anywhere. Then excess
current redirects to the grid for later use. It is the best way to save energy for the future use.
External Battery is not obligatory. The grid-tie inverter works as an option battery if the
external battery is not used. It reduces the cost of the solar system.
Switch on/off buttons are very useful especially in worst weather conditions.
Best Chosen Design
The chosen design is best as it is very cost effective and easy to use. The grid-tie system is
chosen because it cheaper and safe in comparison to the simple solar system. The cover is not
used at the solar panels because that sends the less sun light into the solar panels that
generates less energy. Therefore; the cover is not used.
The covers on the solar panels increase the cost of the solar system also. Therefore; the
chosen solar system design is the best design.
The motive of the solar system is to generate energy in the sun light and use that energy in
day and night also. Therefore, the energy is needed to be stored into backup to give the light
at night and day also at the reasonable price. If the energy stored is finished, the solar system
can take energy from the grid that is sent to the grid for emergency use.
The chosen solar system design is fulfilling all the above mentioned points. Therefore; it is
the best design that can be used in all types of environment and can be survived in all the
disasters.
(solarnation.com 2015)
(Energy Matters 2016)

References
solarnation.com (2015). So what are the components of a Solar Power System?.
Retrieved from
http://www.solar-nation.org/so-what-are-the-components-of-a-solar-power-system.
Energy Matters (2016). How a grid connected solar power system works. Retrieved from
http://www.energymatters.com.au/residential-solar/how-solar-power-works/.