CONTROLLER for HYBRID (photovoltaic- wind turbine and diesel engine) POWER PLANT USING ATMEL 8951

Didik Rostyono,

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.

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.

Figure 3. Schematic Diagram of the HPP

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).

Figure 5. Controller. Figure 6. The Box (2.7m x 1.5m x 1.6m)
Figure 7. The box is divided into 3 rooms Figure 8. Control room
Figure 9. Battery room and Diesel room Figure 10. 89C51 Controller Board.


Hardware and firmware listing (813kB) HybridController.pdf

17 Nov 2006