Electrical DIY Solar Power System: Questions & Answers

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SUMMARY

This discussion centers on the construction and optimization of a DIY solar power system, specifically involving a polycrystalline solar panel (17V, 2.2A) and a monocrystalline panel (4.8V, 4A). Key issues include the incorrect parallel connection of panels with differing voltages, the necessity of diodes to prevent reverse current, and the challenges of using DC to DC converters for powering small devices. Participants emphasize the importance of matching voltage ratings for solar panels and batteries to ensure efficient operation and safety.

PREREQUISITES
  • Understanding of solar panel specifications (voltage, amperage)
  • Knowledge of charge controllers and their functions
  • Familiarity with DC to DC converters and their applications
  • Basic electrical concepts, including current measurement with shunts
NEXT STEPS
  • Research proper solar panel configurations and the implications of connecting different voltage sources in parallel
  • Learn about Maximum Power Point Tracking (MPPT) technology for optimizing solar panel output
  • Explore the use of DC to DC converters, including specifications for handling higher amperage
  • Investigate best practices for wiring batteries in parallel, focusing on matching amp-hour ratings
USEFUL FOR

Individuals building DIY solar power systems, hobbyists interested in renewable energy, and those seeking to optimize solar energy usage for electronics and small devices.

  • #31
@Averagesupernova Thank you, I will try out that experiment later.
 
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  • #32
I came here to help with answers but see that there were quite a few and this was a while back. I'm curious, how did it turn out? Hopefully you learned a lot.
 

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