Energy Storage Systems with Kelly Larson
There is an example towards the end of the Energy Storage Systems lecture that Kelly wanted to clarify:
How long will it take for a 220 AH C/20 battery to reach 70% state of charge?
What is the DOD of the batteries?
How many amps can you charge with?
Example: DOD = 30%, 60A Charger
70 – 30 = 40%
220 Ah x 40% = 88Ah
88Ah/60A = 1.46 hours
NABCEP Exam Prep Guidance/Articles:
Power Conditioning Equipment for Residential Battery Backup PV Systems by Paul Dailey and Joe Schwartz, Feb/March 2013, SolarPro Issue 6.2
Sizing a Grid Tied PV System… with Battery Back Up by Flint Richter, HomePower Magazine
Designing a Stand Alone System by Khanti Munroe, HomePower Magazine
Solar Journey USA: 3200 Miles, Powered by the Sun:
This is a pretty awesome article on how to design and build a small battery charging solar PV system.
The ultimate off grid design: Check out this inspiring video of a young boy inventor who uses solar, a battery, and the guts of a motorcycle blinker to scare away lions and save his village’s animals.
Kelly Larson is an educator for Solar Energy International (SEI). They offer in person as well as online courses including a free course: Introduction to Renewable Energy.
This course is offers an introduction to renewable energy: “including where it is found, how we can harvest it for use in our homes and how it can help ease pressures on the environment.” (SolarEnergy.org)