Abstract
In recent years, solar energy conversion system is adopting quasi Z-source inverter (qZSI) for connecting solar photovoltaic array to AC grid. But, output power of solar photovoltaic array is always of fluctuating profile. When this fluctuating power is injected into local grid or micro-grid, voltage at point of common coupling (PCC) experiences a flickering effect. This is an undesired impact on the local grid from the local consumer’s point of view as it affects the performance of electrical gadgets as well as it creates irritation to people’s eyes through illuminating devices. Sometimes, voltage flicker violates the permissible limit, which is specified in grid code. Therefore, this paper provides the solution to mitigate objectionable power quality issue in respect of local grid-connected qZSI-based solar energy conversion system. Here, fluctuating power at PCC is reduced by the usage of bidirectional converter-based battery storage unit. The charging and discharging operation of battery counteracts fluctuating power profile, hence it significantly smoothens out power profile at PCC and thus, the voltage fluctuation problem at the point can be avoided. The whole study of this paper is done using MATLAB-SIMULINK software.
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Saha, S., Gayen, P.K., Kushary, I. (2022). Reduction of Power Fluctuation for Grid Connected qZSI-Based Solar Photovoltaic System Using Battery Storage Unit. In: Dhar, S., Mukhopadhyay, S.C., Sur, S.N., Liu, CM. (eds) Advances in Communication, Devices and Networking. Lecture Notes in Electrical Engineering, vol 776. Springer, Singapore. https://doi.org/10.1007/978-981-16-2911-2_37
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DOI: https://doi.org/10.1007/978-981-16-2911-2_37
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