Patent ID: 11936338
Assignee: TEIKYO UNIVERSITY
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H  G  Y | IPC G  H

Claim 2:
3. The method for estimating an operation voltage of a solar battery cell in a solar battery module according to claim 1, wherein
the small change of the output current of the solar battery module in the state in which the first solar battery cell is shielded from light and the small change of the output current of the solar battery module in the state in which none of the m solar battery cells is shielded from light are detected by an output voltage of a phase detection unit or a lock-in amplifier, and
the eleventh step includes calculating a value of a ratio of the output voltage of the phase detection unit or the lock-in amplifier as the value of the relative ratio of the resistor of the second solar battery cell.