INTERNATIONAL JOURNAL of RENEWABLE ENERGY RESEARCH T. Bogaraj and J. Kanakaraj , Vol.6, No.3, 2016 A Novel Energy Management Scheme using ANFIS for Independent Microgrid T.Bogaraj*‡, J.Kanakaraj* *Department of Electrical and Electronics Engineering, PSG College of Technology, Coimbatore, India (tbr@eee.psgtech.ac.in, jkr@eee.psgtech.ac.in) ‡ Corresponding Author; T.Bogaraj, Assistant Professor, Department of Electrical and Electronics Engineering, PSG College of Technology, Coimbatore, India-641004. Tel: +91 944 380 6325, Fax: +91 422 257 3833, tbr@@eee.psgtech.ac.in Received: 02.02.2016 Accepted:28.06.2016 Abstract- In this paper an energy management technique for Hybrid Renewable Energy System (HRES) connected with AC load using Adaptive Neuro Fuzzy Interference System (ANFIS) is proposed. This algorithm is developed with an aim of increasing the power transfer capability between the source side and load side and it offers several benefits like the enhanced predicting capability, degradation in complexity as well as the randomization and so forth. In this work, photovoltaic (PV) system, Wind Generating System (WGS), Fuel Cell (FC), Ultra Capacitor (UC) and the battery are considered as the energy sources. The ANFIS technique is trained with the inputs such as the previous instant energy of the available sources and the required load demand of the current time and the corresponding target reference power of the sources and storage devices. According to the load variation, the proposed method makes the appropriate control signals at the testing time to manage the energy of the HRES. A STATCOM based voltage regulation and harmonic mitigation is introduced. The implementation of the system elements and control method has been done in MATLAB/Simulink and the performance of the proposed method is analysed by using different environmental and load test conditions. The results of the test cases confirms that the proposed control technique is effective in prediction of energy required for the next instant and manages the energy flow among HRES power sources and energy storage devices. Keywords ANFIS, Energy management, Hybrid power system, Microgrid, STATCOM. 1. Introduction In near future substantial growth and unexpected challenges in the energy production, transmission and utilization technologies are to be witnessed. Awareness of people about the pollution due to usage of fossil fuel for energy production and initiatives by many countries to scale back environmental pollution has increased the use of green energy sources for power generation [1]. Green energy technologies include renewable energy sources for instance solar PV, Solar Thermal, Wind, biomass, small hydel, wave and tides, geothermal and alternative energy generation for instance microturbine, and fuel cell [2]. The increased usage of renewable energy sources give benefits of reducing transmission losses, forestall dependency on fossil fuels and further improve the system reliability, etc. [3]. Wind and Solar systems are more prominent energy sources and can be used in combination as hybrid power system (HPS) to get reliable power. Anyway, wind and solar energy outputs are depends upon stochastic environmental parameters [4, 5, 6]. Hence energy backup should be provided to increase the energy security. Fuel cell, battery, super capacitor can be used as energy storing devices in an HPS, either as a single device backup or in combinations [7]. Microgrid is nothing but combination of renewable based distributed generating systems of different kind with energy storage systems supplying local loads or connected to grid [8]. Renewable energy based microgrid can be thought as a recently introduced concept called ‘smart grid’, which provides energy management solutions in the distributed generations [9]. MG is a platform to integrate distributed energy resources (DERs) into distribution network which could be a highly promising solution to the problem of depletion of fossil fuels in future. The DERs may include distributed generation (DGs) and distributed storage (DS) [10]. Microgrids are supplying residential communities or industrial consumers in rural or urban areas and are operating in either grid connected mode or islanded mode [11]. Even though renewable energy sources don’t have any pollution, the energy output is random in nature. Hence