Hybrid Power Plant (HPP)
Figure 1 shows the block diagram of the HPP, comprised of 440 Wp photovoltaic modules, 1 kW wind turbine and 5 kW diesel engine as a back- up.
HPP is a centralized PV and wind power generation plant, using battery to store the produced dc current electricity. To cater for emergencies, a
conventional diesel generator is also provided. The main component on HPP is the controller, an electronic device which automatically control when the
back- up diesel engine shall start assisting with producing electricity.
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| Figure 1. Block Diagram of Hybrid Power Plant | | Figure 2. 1 kVA- Hybrid Power Plant. |
In 2005, I applied Atmel 8951 as a controller to manage the operation of 1 kVA- hybrid power plant. Controller sense the battery bank voltage using
voltage divider circuit and the current flow from/ to the battery bank using resistor- shunt (50mV/ 100A). Figure 3 and 4 show the schematic diagram of the
HPP and electronic circuit of the controller.
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| Figure 3. Schematic Diagram of the HPP |
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| Figure 4: Controller Hardware Schematic. |
I used mobile- box (2.7m x 1.5m x 1.6m) as a HPP shelter. The box is divided into 3 rooms; battery room, diesel engine room and control room. On the
roof, I put a photovoltaic rack (2m X 2m).
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| Figure 5. Controller. | Figure 6. The Box (2.7m x 1.5m x 1.6m) |
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| Figure 7. The box is divided into 3 rooms | Figure 8. Control room |
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| Figure 9. Battery room and Diesel room | Figure 10. 89C51 Controller Board. |
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17 Nov 2006