What are the blocking diodes and bypass diodes in a solar cell array? Why are they used and what are the advantage and disadvantages of them?
What are the blocking diodes and bypass diodes in a solar cell array? Why are they used and what are the advantage and disadvantages of them?
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Question
What are the blocking diodes and bypass diodes in a solar cell array?
Why are they used and what are the advantage and disadvantages of them?
Expert Solution
Step 1
DIODE: Allow the current to flow in one direction.
Types:
Blocking diodes are connected in 'series' with the panels to prevent current flowing back into them.
Bypass diodes in solar panels are connected in 'parallel' with a photovoltaic cell to shunt current around it.
USES:
Blocking diodes are used to prevent your batteries from discharging backwards through the solar panels at night.
Bypass diodes is used to eliminate the hot-spot phenomena which can damage PV cells and even cause fire if light hitting the surface of the PV cells in a module is not uniform.
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