06-02-2013, 01:02 PM
Effective Utilization of Solar Energy Using Tracking Circuit for Domestic Loads
Effective Utilization of Solar Energy.pdf (Size: 458.08 KB / Downloads: 54)
Abstract:
This paper presents the practical utilization of the solar energy by using solar tracking system. The tracking
circuit mainly works taking the inputs from the sensor units and giving signals to the microcontroller which in
turn gives the pulses to drive the motor. The sensing units in this circuit are light depending resistors (LDRs)
whose resistance varies proportional to the brightness of the light. The microcontroller generates pulses to run
the motor depending on the program. The motor used is a geared DC motor. This stepper motor takes the input
from the microcontroller and turns accordingly.
Keywords: Light Depending Resistors, 555 timers, microcontroller.
Introduction
The practical utilization of the solar energy normally depends on detailed irradiation knowledge of the inclined
planes. The choice of the favorable collector orientation helps to reduce the cost by increasing the radiant flux
per unit collector area, so enabling a greater energy collection efficacy to be achieved per unit of investment.
When exposure of any site used for harnessing of solar energy photovoltaically allows the most favorable
orientations tend to be south facing in the northern hemisphere and north facing in the southern hemisphere.
However there are some climates where the afternoons are cloudier than forenoons, in these cases the true northsouth
orientation rule may be inappropriate. The appropriate choice of the collector tilt and collector orientation
is always an important decision which is influenced by the latitude. The different blocks of the basic block
diagram of the paper is as shown in the figure below.
Conclusions
The usage of solar energy is increasing day by day. With the effect of increased efficiency and reducing the cost
of solar energy conversion makes the utilization of solar energy simple and reliable at domestic and industrial
level. This promotes the solar energy to become one of the major sources of energy in future.