Polarity reversal regeneration

Polarity reversal regeneration is a repair for modules hit by Potential Induced Degradation (PID). It applies a reverse voltage to the module to restore its materials and recover lost performance. The polarization and shunting forms of PID are both listed as reversible mechanisms. For shunting-type PID, part of the loss can be recovered by reversing the voltage bias between the cell circuit and the grounded module face, by heat treatment, or by both. Early-stage PID can be recovered by applying a reverse voltage or by moving the modules into strings with a non-sensitive polarity. One reported study recovered 94% after reverse voltage was applied. However, electrical regeneration never fully restores the module because some corrosion and sodium remain in the cells. Advanced PID cannot be fully recovered, and part of the shunting damage cannot be reversed. Regeneration techniques are described as giving only temporary recovery. Changing the array configuration to avoid high voltage is the other repair option. Higher temperature speeds up regeneration, so thermal and electrical treatment can work together.

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• sentence 7: support check: partial - Passages say regeneration techniques temporarily recover and that changing array configuration is a separate option, but calling it 'the other repair option' is a slight framing; the core is stated.
• sentence 8: support check: partial - Passages say regeneration rate increases with temperature and that thermal and/or voltage reversal work, but do not explicitly say the two treatments are combined or work together. -->