Individual Solar Panel System

Before

After

Project Objective

The objective of this project was to create a working prototype of a solar panel system that can be applied in the daily lives of those without access to a power grid in Indonesia.

Project Summary

This is a sustainability-focused project that is a part of the International Baccalaureate Middle Years Program (IB MYP). My role in this project consisted of ideating, pitching, iterating, and prototyping the idea for the stand-alone solar panel system, which culminated in the presentation of my physical prototype and information sheet at my school's exhibition fair.

Project Summary

Type: Engineering Design, Manufacturing, Sustainability
Duration: August 2016 - March 2017
Role: IB MYP Student
Deliverables: Physical Prototype, Information Sheet, Final Report
Research Question: How can science, technology, and the abundance of resources in Indonesia be utilized to benefit those without access to a power grid?

Computer-Aided Design (CAD): SketchUp
Electronics Design
Woodworking

Understanding the usage of solar panels in Indonesia

To start off the project, I broke down my background research into 3 main categories. I used each question to focus the direction of my research and the results led me to conclude that my project should be focused around the idea of trying to create a stand-alone solar panel system that would be cheaper to use in comparison to the solar panel systems currently available on the market at the time. The main takeaways I had in response to all of my research questions are summarized below:

Sketching the system components

After conducting extensive research on ways to build a solar panel system, I created sketches of what I thought the final prototype could look like and the different components that would need to be involved, which are depicted below.

Initial solar panel unit design sketch

The basic components I needed in the system include:

  • Solar cells to create the solar panels
  • Wood/metal to prop up the solar panels at the correct angle
  • Housing for the solar panels to sit on top of and to contain the battery and inverter
  • Outlets to connect the battery to the house/electrical appliance

CAD modeling solar panel system iterations

Based on the sketches created, I started CAD modeling the system in SketchUp to visualize how big the solar panels would need to be in order to fit 36 solar cells/panel (which is equivalent to ~297 W/h of sunlight).

I then iterated the CAD model to reflect the design changes I made to the framework to include a sponge layer underneath the solar cells to prevent the solar cells from slipping and moving around the solar panel when being transported.

Solar panel CAD model version 1
Solar panel CAD model version 2

Final CAD iteration of the system

My final CAD model iteration included design changes I made after receiving feedback from my project advisers to modify the framework so that a thin layer of glass would sit on top of the solar cells without directly crushing/touching the cells themselves, as well as a frame for the battery box that would accompany the entire system.

Solar panel final CAD model top view
Solar panel final CAD model front view
Assembled battery box
Battery box broken down into components

Building the final prototype

After finalizing my design and purchasing my materials, I constructed and assembled the system in the span of a month. The final prototype includes the following features:

  • Includes 3 solar panels, a battery, and an inverter
  • Test devices (lightbulb and blender) not included in the system but used to test the functionality of the system
  • Can generate ~1485 Wp (~1.5 kW) per day and has a battery to store the electricity for use in the evenings
  • Solar panels have a sponge layer to prevent the solar cells from moving around and glass panes to protect the cells while still allowing sunlight to pass through
Full prototype with test devices
Full prototype without test devices
Solar panel components
Battery box components
Wiring setup
Inverter wiring setup