Rout 19m Jane comes back from college to visit and help her uncle. She is trying to construct a two-way radio repeater s
Posted: Tue Apr 26, 2022 2:54 pm
- Rout 19m Jane Comes Back From College To Visit And Help Her Uncle She Is Trying To Construct A Two Way Radio Repeater S 1 (105.92 KiB) Viewed 40 times
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Rout 19m Jane comes back from college to visit and help her uncle. She is trying to construct a two-way radio repeater station on a hill in the middle of her uncle's outback property, using her knowledge as an electrical engineer graduate. She chooses to power the 12V radio repeater from a 12V Lithium deep cycle battery, a solar panel, and a small wind generator The wind generator is an old unit that was installed earlier on the peak of the hill, on a 40m high guyed tower. It is regulated so it produces a stable output regardless of the wind speed. There is generally a fine breeze on the peak of the hill, so Jane knows the wind generator will always be running during both day and night. Jane mounts the radio repeater and its antennas midway up the guyed tower (19m). The solar panels are set up 4m from the ground, and the battery is at the base of the tower. Jane uses cable with a resistance of 0.016 N/m to connect the components. Due to her engineering experience, Jane is aware that the solar panel acts principally as a current source and the radio repeater receiver as a constant current sink. The battery and wind generator can each be designed as a voltage source in series with some internal resistance. The circuit of the system is shown beneath. 17m 4m
4m 17m 19m 15012 5.1.12 6A Zo. 08252 2.84A 19.8V O 12.30v + Wind Generator Radio Repeater Solar Panel Battery 4m 17m 19m
a) Draw a full circuit diagram of the system depicted above, accurately annotating all circuit components. If possible, simplify and redraw the diagram by combining series and parallel resistances. b) The solar panel measurements give parameters which directly apply to a Norton model. However, a Thévenin model will simplify the analysis process. Perform a source transformation on the solar panel and redraw the full circuit, with the Thévenin equivalent model included c) Utilizing a circuit analysis technique of your choosing, calculate the mesh currents and power balance of the system at midday, when the solar panel and the wind generator both convey their rated currents. Provide all working. Comment on the effectiveness (calculate percentages) of the power transfer from the solar panel and wind generator to the battery and radio repeater. What power is dissipated in the wiring?