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Nonlinear Backstepping Controller Design for Grid-Connected Photovoltaic Systems with Output LC Filters to Improve Dynamic Stability and Power Quality
conference contribution
posted on 2020-01-01, 00:00 authored by Tushar Kanti Roy, Apel MahmudApel Mahmud, Shama IslamShama Islam, N Rajasekar, K M Muttaqi, Aman Maung Than OoAman Maung Than Oo© 2020 IEEE. A nonlinear backstepping controller is designed in this paper for grid-connected photovoltaic (PV) systems with output LC filters to improve the dynamic stability over a large operating region and power quality. The detailed dynamical model of grid-connected PV systems with output LC filters are used to design the proposed backstepping scheme which ensures the desired tracking of all states. Since the proposed scheme uses all nonlinearities within the grid-PV system along with the dynamics of LC filters, the switching control inputs have the ability to ensure the overall dynamic stability and improve the power quality under any circumstance. The concept of control Lyapunov function (CLF) defining the energy of the system is used to analyze the convergence of all errors characterizing the tracking for different states. The performance of the proposed nonlinear backstepping controller (NBC) is evaluated on a gridconnected system with an output LC filter and the same scheme is compared by employing it on a similar system having an L filter.
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Event
Power Electronics, Smart Grid and Renewable Energy. Conference (2020 : Kerala, India)Pagination
1 - 5Publisher
IEEELocation
Kerala, IndiaPlace of publication
Piscataway, N.J.Publisher DOI
Start date
2020-01-02End date
2020-01-04ISBN-13
9781728142517Language
engPublication classification
E1 Full written paper - refereedTitle of proceedings
PESGRE 2020 : Proceedings of the IEEE International Conference on Power Electronics, Smart Grid and Renewable EnergyUsage metrics
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