5.2 System Troubleshooting
5.2.1 Off-grid wind and solar hybrid system
5.2.1.1 Solar Output Voltage Too Low or No Output
1) Check whether solar panel lead is short circuit, circuit break, open circuit or not.
2) Check whether solar panel is damaged or accumulated too much dust, etc.
5.2.1.2 Abnormal charging
Wind turbine does not charge battery is mainly caused by:
1) Wind speed is too low to reach cut in point. For the off-grid system, when the DC input voltage is higher than battery voltage, it starts to
charge the battery, otherwise it will be no charging.
2) Wind speed is high, but Wind Turbine Does Not Charge Battery
a. The wind turbine DC output voltage is lower than battery
’s:
①
check whether the output of wind turbine is normal (reference: 5.1.4);
②
check whether the rotation speed of wind turbine is normal.
b. The wind turbine DC output voltage is higher than battery
’s:
①
check whether the system wiring is correct and each terminal wiring is well
connected;
②
check whether the controller could rectify power normally. (refer to controller user manual)
c. The type of battery and controller does not match, replace the battery (lead-acid or AGM gel battery is recommended);
d. The battery reached saturation, so wind turbine is on braking mode because of overcharge protection function of the controller
5.2.1.3 Abnormal output
1) Control mode of controller is set incorrectly or damaged and need a replacement. (Reference: controller user manual)
2) Battery is under over-discharge state, check the battery voltage and need to exclude the reason of low battery voltage. (Reference:
5.2.1.2)
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