No Grid Telecom Base Station Energy Storage System GE Transportation
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EDSGN 100 SECTION 18 PROF. ANDY LAU (JS) 2 DECEMBER 9, 2010 No Grid Telecom Base Station Energy Storage System GE Transportation NAKURU
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No Grid Telecom Base Station Energy Storage System GE Transportation. EDSGN 100 Section 18 Prof. Andy Lau (JS) 2 December 9, 2010. NAKURU. Problem Statement. - PowerPoint PPT Presentation
Transcript of No Grid Telecom Base Station Energy Storage System GE Transportation
EDSGN 100 SECTION 18 PROF. ANDY LAU(JS) 2
DECEMBER 9 , 2010
No Grid Telecom Base Station Energy Storage System
GE Transportation
NAKURU
Problem Statement
We are undertaking the GE project of building a reliable cell phone base station in a Third World Country with an unreliable or nonexistent energy grid. We are attempting to build a reliable and cost efficient cell phone base station capable of carrying a constant 1.2+ kW load using a sustainable green energy source, diesel generator, and a sodium metal halide battery so that we can provide people in the area with reliable cell phone service.
Research
Wind Power7-10 mph just to get
them going 10 kW might not be
generated until 25-30 mph.
From 1990-1997 in Nakuru: Average Wind Speed=
1.76 m/s or 3.93 mph Mode Wind Speed= 0 mph
HydropowerPumped StorageLake Nakuru is
relatively close to the city but…o Max. depth=2.8
meterso 495 species of birds,
along with other wildlife
Research
Charge Controller
Charge ControllerRated power: 2
kWRated Battery
Voltage: 48 VMax PV Input
Power: 1700 WGE Durathon Sodium-Halide
Battery Type A2 Ambient Temp: -40 ~ 65m ºC 7.5 hours to fully recharge Max heater power: 1700 W Dimensions: 320 x 530 x 870
mm Lasts around 15 years
Research
Base Transceiver StationEntirely solar poweredDoes not need grid
power /diesel generators
No air conditioningNeeds 230 W to runSmaller PV array while
chargingMeets same
requirements as other systems
Analysis
1. More shade = less output
0 0.25 0.5 0.75 10
20406080
Shading Influence
Amount of panel shaded
PV C
urre
nt
(mill
iam
ps)
2. Angle isn’t as influential as shading, but still makes difference
0 15 30 45 60 75 900
20406080
Angle Influence
Angle of panel relative to ground
PV C
urre
nt
(mill
iam
ps)
Photovoltaic Experiment
Analysis
Charge Controlle
r
PV Syste
m 1.7 kW
BTSconstant
230 W
Dump Energy
1.2 kWh per day
GE battery
.97 η .92 η
Analysis
Analysis
Economictotal cost of system≈ $35,000476 charges per day (with available dump
loads)According to our calculations…we will make
$34,748 US dollars per year charging 20¢
Final Concept
Final Concept
Final Concept
Final Concept
Conclusion
If you take away anything from our project, you should understand…
1. 100% solar energy1. no diesel
1. BTS ≈ 1/5 original2. “phototropism”3. Dump loadcharger4. pay for itself ≈1 year
