Mppt; Intelligent Temperature-Control Technology; Anti-Pid Effect Function (Optional); Introduction To Pid Effect - Sungrow SG4950HV-MV System Manual

System Manual

10.7 MPPT

Maximum Power Point Tracking (MPPT) is a technique that the MV Station uses to get
the maximum power from the PV arrays. PV arrays have a complex relationship
between solar irradiation, temperature and total resistance that produces a non-linear
output efficiency known as the I-V curve.

10.8 Intelligent Temperature-Control Technology

MV Station will continuously detect the IGBT temperature and adjust the fan speed
accordingly. When the module temperature is low, MV Station will decrease the fan
speed to lower the device noise and decrease the device operation consumption. As
the module temperature increases, the MV Station will increase the fan speed for better
heat dissipation.
The intelligent temperature-control technology can synchronize the speed of fan and
temperature of the IGBT module and thus optimize the module temperature and other
conditions.

10.9 Anti-PID Effect Function (Optional)

10.9.1 Introduction to PID Effect

Potential Induced Degradation (PID) of the solar module is a performance degradation
caused by high negative voltage. The PID effect can occur with all crystalline silicon
solar cells that are embedded in glass-foil modules, leakage currents can result under
unfavorable conditions (accelerated by high humidity and temperature) where the
module joins with the frame and causes short-circuits that lower the overall
performance of the system.
This MV Station is equipped with optional anti-PID function to effectively prevent the PID.
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10 Main Functions
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