Solar power generation system

A solar power generation system comprising:

• a solar module in which a plurality of solar cells are connected in series;
• a power converter connected to the solar module, the power converter being configured to control an output voltage of the solar module such that the output voltage matches a target output voltage;
• and
• a control device configured to determine the target output voltage, the control device being configured to determine a lower limit value of the target output voltage based on a following general formula,
• V
• TL
• ⁡
• (
• I
• rr
• ,
• T
• )
• =
• V
• OC
• ⁡
• (
• I
• rr
• ,
• T
• )
• ·
• n
• -
• 1
• n
• -
• V
• BD
• ⁡
• (
• T
• )
• -
• α
• where Irr denotes a used light intensity, T denotes a temperature, VTL(Irr, T) denotes the lower limit value of the target output voltage under a certain used light intensity and a certain temperature, VOC(Irr, T) denotes an open-circuit voltage of the solar module under a certain used light intensity and a certain temperature, n denotes the number of the solar cells connected in series, VBD(T) denotes a positive value of a reverse breakdown voltage of one of the solar cells at a certain temperature, and α denotes a tolerable error.