Transcript Presentation1 - WordPress.com

* Title of project
* Purpose of Maximum Power Point Tracking
* Connection of Solar Arrays
* Different methods of MPPT
* Perturb and Observe method
* Reasons for using the P&O method
* Limitations of the P&O method
* What the completed project will contain
* Microcontroller being used to implement the algorithm
* Work to be carried out
*Maximum Power Point Tracking (MPPT)
for Solar Power Applications with Partial
Shading
Keeping a solar array in the correct position so it
will receive the maximum amount of solar
irradiance available to produce the maximum
possible power.
* The ‘knee’ of the curve is the most sought
after position.
* Each solar cell has a current of 3 amps and a
voltage of 6 volts
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Series
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Parallel
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*Perturb and Observe Method
Observes the array output power and determining the next action,
either increasing or decreasing the array operation voltage, this is
discussed in greater detail in the next slide.
*Incremental Conductance Method
Adjusts terminal voltage according to the maximum power point
voltage by measuring changes in array current and voltage and
predicting the effects of a voltage change.
Start
Decrease
Operating Voltage
Increase Operating
Voltage
If Incorrect
If Correct
If Correct
If Incorrect
Power >
Previous Power
Power >
Previous Power
* Very simple and easy to implement.
* Most commonly used so information is widely
available.
* Provides predictive and accurate solutions to
maximum power point tracking under partially
shaded conditions.
* Power obtained oscillates just below the Maximum
Power Point in steady state operation.
* Under rapidly varying irradiance & load conditions
the system can track in the wrong direction.
* The size of the change in operation voltage chosen
determines the speed & convergence of the
Maximum Power Point and the range of oscillation.
Power
Solar Panel
Voltage Sensor
DC-DC Converter
Power
Current Sensor
MPPT Controller
(Arduino)
Load
Controlled via DAC
* Inexpensive, most Arduino starter kits cost between €50-70.
* The Arduino will work on Windows, Mac and Linux.
* Simple clear and open source programming environment.
* Write required code to program the Arduino
microcontroller
* Build the project and test it using solar cell
simulator
* Create PSPICE simulation models of the circuits
required
* Complete the required web page, poster and
final report