Browsing by Author "Kumar, V.V."

Filter results by typing the first few letters
Now showing 1 - 2 of 2
  • No Thumbnail Available
    Item
    A Critical Review of MPPT Algorithms for PV Systems
    (Institute of Electrical and Electronics Engineers Inc., 2024) P, P.; Anusha, R.; Kumar, V.V.; Balasubramanian, B.
    With the growing population, one of the main issues is electricity. Electrical power can be generated from a variety of conventional or non-renewable and non-conventional or renewable energy resources. However, there are negative effects of using non-renewable energy resources on both the environment and the human population. Searching for an alternate energy source is necessary due to the limited availability of these fossil fuels. Among the alternatives that can be used to generate electricity are renewable energy resources that transform energy from the sun, wind, falling water, etc. Solar energy is one among these energy resources that is available in abundant. The fundamental components of photovoltaic (PV) systems are solar cells, which are connected in parallel and series to produce the necessary amount of power. There is only one peak in the PV panel characteristics when all the panels receive the same amount of insolation. However, PV systems commonly experience non-uniform insolation due to shadowing. Their power-voltage (P-V) curve show several peaks under these circumstances, with a single global maximum power point (GMPP) among all. Operating these panels at GMPP during partial shading conditions (PSC) is a challenging task as the insolation keeps changing frequently. This study gives a detailed review of various maximum power point tracking (MPPT) methods that is used during uniform and PSC. This review will help the researchers to explore the possibility of choosing best alternative MPPT techniques to be incorporated for commercial purpose. © 2024 IEEE.
  • No Thumbnail Available
    Item
    Application of Fuzzy Logic in Power Quality Assessment of Modern Power Systems
    (wiley, 2021) Kumar, V.V.; Babulal, C.K.
    The modern power system network is subjected to several changes due to rapid technological advancements including penetration of renewable energy sources, distributed generation and microgrids. Along with this, the extensive use of power electronic converters had resulted the power quality assessment as an important task that is to be performed for improving the reliability of the system. In these circumstances, the prime concern is to have single index for evaluating power quality which is capable of accounting all the power quality disturbances. This chapter mainly focuses on the significant power quality indices such as power factors and harmonic distortion factors that are related to waveform distortion. The amalgamation of power quality indices namely total harmonic distortion (THD), total demand distortion (TDD), displacement power factor (DPF), transmission efficiency power factor (TEPF) and oscillation power factor (OSCPF) into a single fuzzy logic based power quality index is explained in this chapter. The newly developed power quality index is computed for different distortion conditions in Matlab environment to authenticate its effectiveness and the results obtained are presented in a lucid manner. Finally, this chapter concludes that the advantages of fuzzy logic approach in handling the imprecise data and uncertainties can be exploited for the evaluation of power quality in modern power systems. This helps in better understanding about the severity levels of power quality disturbances and ranking them. © 2021 Scrivener Publishing LLC.