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Investigation of PV Balancer Architectures on Practical Solar Photo Voltaic System ABSTRACT: In this paper, a trending concept of module integrated converter called as photovoltaic (PV) balancers is presented and verified on a practical data of solar PV system. This concept enables the maximum power point tracking for each module, which historically reduces the requirements for traditional power converters and significant economic impact on overall configuration of solar PV systems. In order to demonstrate the performance of the two possible architectures of PV balancers validated on a practical photovoltaic system and compared with the traditional module integrated converter presented in the literature. Thus, the obtained simulation results with PV balancers are superior in terms of power loss, rating, efficiency, regulation, and voltage stress on switching device.
KEYWORDS: 1. Photovoltaic 2. Maximum Power Point Tracking 3. Module Integrated Converters 4. PV Balancer
SOFTWARE: MATLAB/SIMULINK
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ELECTRICAL PROJECTS USING MATLAB/SIMULINK Gmail: asokatechnologies@gmail.com, Website: http://www.asokatechnologies.in
0-9347143789/9949240245 BLOCK DIAGRAM:
Fig.1. Architecture-I
Fig.2. Architecture-II
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ELECTRICAL PROJECTS USING MATLAB/SIMULINK Gmail: asokatechnologies@gmail.com, Website: http://www.asokatechnologies.in
0-9347143789/9949240245 EXPECTED SIMULATION RESULTS:
Fig. 3. PV Curves for DSP-100M panel
Fig. 4. PV panel output currents
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ELECTRICAL PROJECTS USING MATLAB/SIMULINK Gmail: asokatechnologies@gmail.com, Website: http://www.asokatechnologies.in
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Fig. 5. PV panel output voltages
Fig. 6. PV balancer output voltages for architecture-I
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ELECTRICAL PROJECTS USING MATLAB/SIMULINK Gmail: asokatechnologies@gmail.com, Website: http://www.asokatechnologies.in
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Fig. 7. PV balancers output currents for architecture-I
Fig. 8. PV balancer output voltages for architecture-II
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ELECTRICAL PROJECTS USING MATLAB/SIMULINK Gmail: asokatechnologies@gmail.com, Website: http://www.asokatechnologies.in
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Fig. 9. PV balancers output currents for architecture-II
CONCLUSION: This paper investigated the new concept of MIC called PV balancer with two possible architectures and demonstrated on a practical three module PV panels of PV systems. The investigations shows that the PV balancer has better efficiency, lower power rating, desirable voltage transformation ratio, low DC bus loss and good regulation ability as compared to the other commercial MIC. Among the two possible architectures, architecture-II provides the maximum power point tracking and decreases the few electrical requirements for overall photovoltaic systems. The work will be extended to propose different architectures on practical water pumping photovoltaic system with converter optimization, DC bus voltage control and developing a hardware testing module.
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ELECTRICAL PROJECTS USING MATLAB/SIMULINK Gmail: asokatechnologies@gmail.com, Website: http://www.asokatechnologies.in
0-9347143789/9949240245 REFERENCES: [1]
E. Román, R. Alonso, P. Ibañez, S. Elorduizapatarietxe, and D. Goitia, “Intelligent PV Module for Grid-Connected PV Systems,” IEEE Trans. Indust. Elect., vol. 53, no. 4, August 2006.
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[3]
C. Olalla, D. Clement, M. Rodriguez, and D. Maksimovic, “Architecturesand control of submodule integrated dc–dc converters for photovoltaic applications,” IEEE Trans. Power Electron., vol. 28, no. 6, pp. 2980–2997, June 2013.
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S. Kjaer, J. Pedersen, and F. Blaabjerg, “A review of single-phase grid connected inverters for photovoltaic modules,” IEEE Trans. Ind. Appl., vol. 41, no. 5, pp. 1292–1306, September 2005.
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A. Trubitsyn, B. Pierquet, A. Hayman, G. Gamache, C. Sullivan, and D. Perreault, “Highefficiency inverter for photovoltaic applications,” in Proc. Energy Convers. Cong. Expo., pp. 2803–2810, September 2010.
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