Mppt technique and solar panels

1. DEPARTMENT OF ELECTRICAL& ELECTRONICS ENGINEERING
MPPT FOR SOLAR PV CELL USING P&O AND INC ALOGARITHM
UNDER THE GUIDENCE OF:
K.SHAILAJA MADAM
ASSISTANT PROFESSOR(EEE)
Presented by:
20C35A0217- SRAVANTHI
20C35A0220- D.KISHOR KUMAR
20C35A0224- G.VAMSHI
20C35A0256- R.RAJINI
20C35A0272- E.KEERTHANA

2. CONTENTS
 Abstract
 Objective
 How PV Cell Works?
 PV Arrays Components
 Introduction
 MPPT Techniques
 System Modelling
 General configuration of mppt
 Applications
 Advantages
 Future Scope

3. ABSTRACT
• MPPT techniques are used in photovoltaic system to maximize the PV array output power by
tracking continuously the maximum power point (MPP) in the P-V curve of a photovoltaic
array.
• The output of the system is connected to a grid so that the proposed system works as a solar
generator on sunny days, in addition to working as an active power line conditioner on rainy
days.
• Finally, computer simulations and experimental results demonstrate the superior performance
of the proposed technique.

4. objective
 what is a solar cell?
A solar cell converts optical energy directly into electrical energy.
 Efficiency of solar cell is less, it only converts 30-40% of energy incident on it to electrical
energy.
 Efficiency of solar cell is increased by a technique called maximum power point tracking.
By installing
this technique we can get additional 20-30% of extra energy.

5. How PV Cell Works?
PV Array COMPONENTS
 PV Cells
 Modules
 Arrays

6. Introduction
 What is MPPT?
It is an electronic system that operates the photovoltaic modules in a manner to extract the
maximum power from the system.
 What is maximum power point?
It is the operating point at which maximum power can be extracted from the system. Using
represented as MPP.
 Generally MPPT is installed in between PV system and load. Coupling to the load for
maximum power transfer may require either providing a higher voltage at lower current or
lower voltage at higher current.

7. MPPT Techniques

8. Perturb and Observe (P&O) Method
• P&O method is to modify the operating voltage &current of the PV panel until you obtain maximum power
from it.
• In this we use only voltage sensor to sense the PV array voltage.

9. Incremental Conductance(INC) Method
• Incremental conductance uses two voltage & current sensors to sense the output voltage &current of the PV array.
• Here we are sensing both current &voltage simultaneously . hence, the error due to change in irradiance is
eliminated . However the complexity and cost of implementation increases.

10. SYSTEM MODELING

11. GENERAL CONFIGURATION OF MPPT

12. Applications
 Space and Orbital Station.
1)Cost and complexity are not an issue.
2) High reliability and performance.
 Residential use.
1) Partial shading issue, payback time .
2)Two stage incremental conductance.
 Street lighting.
1)Charging of batteries during the day.
2)Easy and cheap implementation is more important.
 Photodiodes.

13. Advantages
 MPPT method can extract maximum available power from the PV module.
 This can increase the tracking efficiency.
 It will decrease the burden on fossil fuels which are rapidly exhausting.
 If our energy use is greatest in the winter(typical in most homes) and we have
cold winter weather, then we can gain substantial boost in energy when we need
it the most.

14. Future Scope
o An extension of this project would be to directly power the microcontroller and other circuits
from the solar panel instead of from a power supply.
o Improvements to this project can be made by tracking the maximum power point in changing
environmental conditions.
o This can be done by using SIMULINK model to carry out MPPT instead of writing its code in
embedded MATLAB functions.