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4THInternational Conference

On

ADVANCES IN ENERGY RESEARCH

Indian Institute Of Technology Bombay

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An Investigation Of Incremental Conductance Based

Maximum Power Point Tracking For Photovoltaic System

Mr. Kante Visweswara,

Assistant Professor of EEE Department,

KUPPAM ENGINEERING COLLEGE KUPPAM,

KUPPAM-517425, Chittoor District,

Andhra Pradesh State, INDIA.

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ABSTRACT

A maximum-PowerPoint tracking (MPPT) method with a

simple algorithm for photovoltaic (PV) power generation

systems.

The method is based on use of an Incremental conductance

of the PV to determine an optimum operating current for themaximum output power.

This work proposes on Investigation of Incrementalconductance Based maximum Power Point Tracking for

Photovoltaic System, to have the advantages of low

frequency switching.

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Advantages of SOLAR PV

high-efficiency

clean, pollution free, and inexhaustible

Disadvantages of SOLAR PV

High cost of Solar PV material

Only power generation is available on sunny days

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Solar PV Cell Equivalent Circuit

0

( ){exp[ ] 1}S SL

SH

q V IR V IRI I I

nkT R

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How To Protect Hot Spot Heating?

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Characteristics of a Solar PV Cell

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Expected VI and PV curves of a PV systems

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Expected waveforms due to the changes

in the atmospheric conditions

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From the Characteristics

Power of the module has only single maxima.

Peak Power of the module changes with the change in

temperature.

Need to track the peak power in order to maximize theutilizations of the solar array.

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How Peak Power is tracked

Peak Power is tracked by adjusting the impedance of theload.

This is obtained by using an interface between the load and

the solar module.

A Dc/Dc converter can act as a interface between the load

and the module.

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Block Diagram of Photovoltaic System

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Role of MPPT

(Maximum power Tracking Technique)

To extract maximum power from the PV arrays at real time

becomes indispensable in PV generation system.

To maximize the photovoltaic array output power,

irrespective of the temperature and radiation conditions andof the load electrical characteristics the PV array output

power is used to directly control the dc/dc converter, thus

reducing the complexity of the system.

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Incremental Conductance MPPT

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Incremental Conductance Based MPPT

Instantaneous conductance. We have,P = V I

Applying the chain rule for the derivative of products yields to

P/V = [(VI)]/ V

At MPP, as P/V=0

the above equation could be written in

terms of array voltage V and array current I asI/V = - I/V

The MPPT regulates the PWM control signal of the dcto

dc boost converter until the condition: (I/V) + (I/V) = 0 is

satisfied.

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Incremental Conductance MPPT Flow chart

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Simulation Diagram For The Incremental

Conductance Method

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PV Voltage Without MPPT Controller

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PV Output Voltage With MPPT Controller

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PV Output Current Without MPPT Controller

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PV Output Current With MPPT Controller

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PV Output Power Without MPPTController

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PV Output Power With MPPT Controller

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CONCLUSION

A simple MPPT method that requires only measurements of

Incremental conductance. The proposed MPPT algorithm iscalled Incremental conductance Method.

However, by using this MPPT method we have increasedefficiency by 44%.This method computes the maximum

power and controls directly the extracted power from the

PV.

The proposed method offers different advantages which are

good tracking efficiency, response is high and well control

for the extracted power.

REFERENCES

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REFERENCES1.Hussein, K.H., Murta,I., Hoshino,T., Osakada,M.,Maximum

photovoltaic power tracking: an algorithm for rapidly changing

atmospheric conditions, IEEE Proceedings of Generation,

Transmission and Distribution, vol. 142, No.1, 1995.

2.E. Koutroulis, et. Al, Development of a Microcontroller-based

photovoltaic maximum power tracking control system, IEEE Trans.

On power Electron, VOl.16, No. 1, PP.46-54, 2001.

3. J.A.Jiang et. Al.,MaximumPower Tracking for Photovoltaic PowerSystems,Tamkang Journal of Science and Engineering, Vol. 8, No.

2, pp. 147-153, 2005.

4. S. Jain and V. Agarwal, A New Algorithm for Rapid Tracking of

Approximate Maximum Power Point in Photovoltaic SystemsIEEEPower Electronic Letter, Vol.2, pp. 16-19, Mar.2004.

5. Y.Kuo, et. Al., Maximum power point tracking controller for

photovoltaic energy conversion system,IEEE Trans. Ind. Electron.,

Vol.48, pp. 594-601, 2001.

REFERENCES

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REFERENCES6.Rafia Akhter and Aminul Hoque, Analysisof a PWM Boost Inverter

for Solar Home Application, Proceedings of World Academy Of

Science, Engineering And Technology Volume 17 December 2006

ISSN 1307-6884.

7. Huan-Liang Tsai, Ci-Siang Tu and Yi-Jie Su, Development of

Generalized Photovoltaic Modeling Using MATLAB/Simulink,

Proceedings of the World Congress on Engineering and Computer

Science 2008 WCECS 2008, October 22-24, 2008, San Francisco,USA.

8. Yang Chen and Keyue Ma Smedley,Cost-Effective Single-Stage

Inverter With Maximum Power Point Tracking, IEEE

TRANSACTIONS ON POWER ELECTRONICS, VOL. 19, NO:5,SEPTEMBER 2004.

9.I.H. Altas and A.M. Sharaf, ANovel On-Line MPP Search Algorithm

For PV Arrays, IEEE Transactions on Energy Conversion, Vol. 11,

No. 4, December 1996.

REFERENCES

8/13/2019 5kante-131210zxx

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REFERENCES10.S. Balakrishna, V. Gajendra, M. Mohan, M. Suresh,DesignAspects

Of Microcontroller Based Maximum Power Point Tracking

Controller For PV System, Proceedings of 2nd International

Conference on Mechatronics 2005, Vol.1, pp 263 269, Malaysia,2005.

11.Balakrishna S, Keyna Chung, Chua Han Bing, Veeramani S,

Rajamohan G, Design and Simulation of Microcontroller Based

MPPT using Incremental Conductance AlgorithmProceedingsof 2ndInternational Conference on Electrical and Computer Engineering

2005, pp 144 -148, Ethiopia, 2005.

12.Wichert B, Control of PV Diesel Hybrid Energy Systems, PhD

Thesis, Curtin University of Technology, Western Australia, 2000.13. D. P. Hohm and M. E. Ropp, Comparative Study of Maximum

Power Point Tracking Algorithms Using an Experimental,

Programmable, Maximum Power Point Tracking Test Bed, IEEE

Proc. of photovoltaic specialists conference, pp1699-1702, 2000.

REFERENCES

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REFERENCES14.Keyna Chung, Design and Simulation of MPPT Using Incremental

Conductance Technique, B. Eng. Thesis, Curtin University ofTechnology, Sarawak, Malaysia, 2005.

15.D.P. Hohm, D.P, M.E. Ropp, Comparative Study of MaximumPower Point Tracking Algorithms, Journal of Progress inPhotovoltaics: Research and Applications, Wiley Interscience, vol.11, no. 1, pp. 47-62, 2003.

16. W. Swiegers, J. Enslin, An lntearated Maximum Power PointTracker For Photovoltaic Panels,Proceedings of IEEE InternationalSymposium on Industrial Electronics, Vol. 1, 40-44, 1998.

17. T. Noguchi, S. Togashi, and R. Nakamoto, Shortcurrent pulse-basedMaximum Power Point Tracking Mthod for Multiple Photovoltaic-

and-Converter Module System, IEEE Trans on Ind. Elec., Vol. 49,2002.

18. E. Solodovnik, S. Liu and R. Dougal, PowerControllerDesign forMaximum Power Tracking in Solar Installations,IEEE Transactionson Power Electronics, Vol. 19, No. 5, pp.1295-1304, 2004.

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THANK YOU