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Top1. Introduction
The forecast of future smart grid related with electric vehicles charging stations leads genuine worries for power quality in power distribution system. The harmonics produced by non-direct loads (electric vehicle batteries) in reality greatly affect the system which impacts the hardware ought to be considered in modern grid. The raised current contorts warmth, losses, and causes failure of equipment’s. This phenomenon must be dispensed with, which diminishes the proficiency of the system (Emmott et al., 2011).
To prevent voltage distortion at the point of common coupling PCC, Dynamic Voltage Restorer is advised. Another way to protect the system is to directly reduce the pollution of power electronics based loads at their source. There are other attempts to protect the plant. There exist two active devices to overcome described power quality issues (Sixing et al., 2013). The first category is series active filter Series Active Filter (SeAF) including hybrid, can reduce current harmonics fed from non-linear loads. Shunt active filters are well known compared to series active filters. But there is a great advantage of series active filters that is low level compensators can be used. Howe ever, the complexion configuration and necessity of isolation of series transformer makes in an industrial application (Abdalla et al., 2011). The second category is to compensate voltage issues. A Dynamic Voltage Restore (DVR) is same as SeAF. These two categories are different from each other in control principles. The difference depends on the purpose of the system.
The benefit of the proposed system is it can remunerate the harmonic voltage and current produced by non-linear loads (Ali et al., 2012). Transformer less Hybrid Series Active Filter is a substitute choice to the conventional power exchanging converters, where each stage can be controlled and worked without disturbing different phases (Abdulmajee, n.d.). This paper shows that the partition of three phase converter to a solitary stage H-bridge converter has permitted the elimination of transformer cost by detaching transformer and empowers modern application for filtering purposes. The setup has indicated incredible viability in the requested execution in solving the issues of current and voltage distortions, Power Factor (PF) on load terminals. The general piece outline as appeared in Fig.1.
Maximum Power Point Tracking (MPPT) techniques uses to extract the maximum power from solar photovoltaic and wind renewable energy system(Akagi & Isozaki, 2007; Arulmurugan & Suthanthiravanitha, 2014; Javadi & Al-Haddad, 2015; Kuperman et al., 2013; Wu et al., 2003). Without MPPT the performance output of the system is poor power and efficiency, It is one of the common problem for all renewable energy system power extraction. Researcher suggested various MPPT techniques such as Perturb and Observe (P&O), Fractional Open circuit, Fractional short circuit, Incremental conductance and Artificial intelligent technique and so on. Each techniques has own pros and cons. The incremental conductance technique is better compare to perturb and observe (P&O) method because P&O has limitation for high oscillation on peak point(Akagi & Isozaki, 2007; Javadi & Al-Haddad, 2015; Kuperman et al., 2013). The Incremental conductance operate based on conductance and Instantaneous. The Incremental conductance (Inc-Cond) is provide good efficiency compare to P&O. In this article Inc-Cond uses to extract power from PV system and extended into hybrid active filter(Abu-Rub et al., 2014; Arulmurugan & Venkatesan, 2015; Dwi et al., 2012; Lin et al., 2011; Liqul et al., 2014; Liu et al., 2013; Safari & Mekhilef, 2011; Scung-Hee et al., 2014).
Figure 1.
Proposed Electrical diagram of the THSeAF in a single phase utility