Home > Documents > Chapter IV

Chapter IV

Date post: 12-Apr-2016
Category:
Author: scherraine-khrys
View: 212 times
Download: 0 times
Share this document with a friend
Description:
wala
Embed Size (px)
of 5 /5
27 JMJ Marist Brothers College of Engineering and Technology NOTRE DAME OF MARBEL UNIVERSITY City of Koronadal, South Cotabato Chapter IV Hardware Testing and Results In this chapter the results of the hardware testing and discussions relevant to the results are presented. The data were collected and then processed in response to the problems posed in chapter1 of this paper. 1. Testing of Solar Panel The solar panel was set under a bright sunlight and attain about 18.76V as shown in figure 4.1. Figure 7. Open-circuit voltage of solar panel –18.76V
Transcript

30 JMJ Marist BrothersCollege of Engineering and TechnologyNOTRE DAME OF MARBEL UNIVERSITYCity of Koronadal, South Cotabato

Chapter IVHardware Testing and Results

In this chapter the results of the hardware testing and discussions relevant to the results are presented. The data were collected and then processed in response to the problems posed in chapter1 of this paper.1. Testing of Solar PanelThe solar panel was set under a bright sunlight and attain about 18.76V as shown in figure 4.1.

Figure 7. Open-circuit voltage of solar panel 18.76V

2. Testing of Charge ControllerTo be able to charge the 12V battery, we need to obtain a voltage of ~14.4V since it is understood that we need a potential higher than 12V to successfully charge the battery. After adjusting the potentiometer R9 on the charge controller, a 14.4V was obtained.

3. Testing of voltage RegulatorUsingthe IC LM2575HVT-5 chip produced a constant volateg of 5. 04V.

Figure 7.3 Output Voltage produced by the voltage Regulator The voltage regulator is able to charge a LG Optimus mobile phone connected to it as shown in Fig. 20.

Charging indication

Figure 7. 4 Voltage Regulator charging a mobile phoneThe charging process drawn a constant current of 0.4A which is around is around 400mA4. Testing of Battery Level IndicatorWhen the battery voltage is around 12.25V, 3 LEDs are lit up. When the battery is at a voltage level greater than 12.25V all LEDs are turned on, and this indicates the battery is at full charge.

Figure 7. 5 Testing of the battery indicator circuitLOADPin (Inventer)Pout(Inverter)Pin (Designed Voltage Regulator)Pout (Designed Voltage Regulator)

LG Optimus Mobile PhoneIin = 0.3A @ V= 12.16VP= 3.783 wattsIout = 0.2A @ V = 5.02VP = 1 wattIin = 0.2A @ V = 12.65VP = 2.4 wattsIout = 0.4A @ V= 5VP = 2watts

Table 4.1 Power Input-Output of a Conventional (with inverter) and the proposed (with step-down DC/DC converter) solar energy system.Table 4.1 shows the power delivered by the battery to the load and the power received by the load from the battery. These are the energies supplied by the battery to the load through two different mediums:1. Inverter and plugged AC phone charger.2. Designed Voltage Regulator (DC/DC step-down switching regulator).


Recommended