# Design and Implementation of a Polar Wind and Solar Hybrid Power Supply Controller
## 5 Experiment  
After completing the software and hardware debugging of the module, a 100 W power generation system, composed of a 50 W vertical axis wind turbine and 50 W photovoltaic panels, was tested in the laboratory environment. The test platform is shown in Figure 16.  
\begin{table}
\begin{tabular}{c c c c c c c} \hline \hline \multirow{2}{*}{**climate**} & \multirow{2}{*}{**Strategy**} & \multirow{2}{*}{**Energy Situation**} & **Wind** & \multirow{2}{*}{**Photovoltaic**} & **Battery** & **Unloading** \\  & & & & & & \\ \hline \multirow{8}{*}{Polar night} & 0 & \(\mathrm{P_{w}}^{1}=0;\mathrm{P_{bat}}^{2}=0\) & Shutdown & Cut out & Cut out & \(\times\) \\  & 1 & \(\mathrm{P_{w}}=0;\mathrm{P_{bat}}>0\) & Shutdown & Cut out & Discharge & \(\times\) \\  & 2 & \(0<\mathrm{P_{w}}<\mathrm{P_{L}};\mathrm{P_{bat}}=0\) & MPPT & Cut out & Cut out & \(\times\) \\  & 3 & \(0<\mathrm{P_{w}}<\mathrm{P_{L}};\mathrm{P_{bat}}>0\) & MPPT & Cut out & Discharge & \(\times\) \\  & 4 & \(\mathrm{P_{w}}\geq\mathrm{P_{L}};\mathrm{P_{bat}}\geq\mathrm{P_{w}}-\mathrm{P_{ L}}\) & MPPT & Cut out & Charge & \(\times\) \\  & 5 & \(\mathrm{P_{w}}\geq\mathrm{P_{L}};\mathrm{P_{bat}}<\mathrm{P_{bat}};\mathrm{P_{w} }-\mathrm{P_{L}}\) & MPPT & Cut out & Charge & \(\surd\) \\  & 6 & \(\mathrm{P_{w}}\geq\mathrm{P_{L}};\mathrm{P_{bat}}=0\) & MPPT & Cut out & Cut out & \(\surd\) \\  & 7 & \(0<\mathrm{P_{w}}<\mathrm{P_{L}};\mathrm{P_{w}}=0;\mathrm{P_{bat}}=0\) & Shutdown & MPPT & Cut out & \(\times\) \\  & 8 & \(0<\mathrm{P_{w}}<\mathrm{P_{L}};\mathrm{P_{w}}=0;\mathrm{P_{bat}}>0\) & Shutdown & MPPT & Discharge & \(\times\) \\  & 9 & \(0<\mathrm{P_{w}}+\mathrm{P_{w}}<\mathrm{P_{L}};\mathrm{P_{bat}}=0\) & MPPT & MPPT & Cut out & \(\times\) \\  & 10 & \(0<\mathrm{P_{w}}+\mathrm{P_{w}}<\mathrm{P_{L}};\mathrm{P_{bat}}=0\) & MPPT & MPPT & Discharge & \(\times\) \\  & 11 & \(  
\(\bullet\) Wind power system  
The blades of the 50 W vertical axis wind turbine are dismantled, and the flange coupling is used to connect with the small AC speed-regulating motor. The AC speed-regulating motor drives its rotation and indirectly realizes the power output of the vertical axis wind turbine at different wind speeds, by adjusting the speed of the AC motor. The right side of the AC variable speed motor is a speed governing device, and the vertical axis wind turbine is a ruggedized structure. See the lower side of Figure 16.  
\(\bullet\) Photovoltaic systems. The black part on the upper side of the picture is a 50 W photovoltaic module, which is made of reinforced tempered glass and an aluminum alloy frame. During the power generation experiment, it will be placed under outdoor sunlight. \(\bullet\) Energy storage. On the left side of the picture is a lead-acid battery with a capacity of 200 AH, which can work reliably from \(-40\)\({}^{\circ}\)C to \(+75\)\({}^{\circ}\)C.  
\(\bullet\) Load. On the right side of the picture is a high-power load resistor for consuming wind power, photovoltaic power and battery power. \(\bullet\) Controller. In the middle position at the center is the wind-solar complementary controller. After making the circuit designed above into PCB board, it is welded by low temperature resistant components. Next, the waveforms of wind power generation, photovoltaic power generation and charge-discharge circuit are tested respectively. The test waveform of the wind power circuit is shown in Figure 17.  
The green line is its output voltage, which is 20 V per cell and about 72 V. The yellow line is the GS waveform of the power switch MOS transistor. The value of each cell is 5 V, its frequency is 48 kHZ, the amplitude is 12 V, and the duty ratio is 60% at rated output. The blue line is the DS waveform of the power switch MOS transistor, each cell is 50 V, and its peak value is the same as the output voltage.