Modeling and simulation of stand-alone hybrid power system with fuzzy MPPT for remote load application

Abstract

Many parts of remote locations in the world are not electrified even in this Advanced Technology Era. To provide electricity in such remote places renewable hybrid energy systems are very much suitable. In this paper PV/Wind/Battery Hybrid Power System (HPS) is considered to provide an economical and sustainable power to a remote load. HPS can supply the maximum power to the load at a particular operating point which is generally called as Maximum Power Point (MPP). Fuzzy Logic based MPPT (FLMPPT) control method has been implemented for both Solar and Wind Power Systems. FLMPPT control technique is implemented to generate the optimal reference voltage for the first stage of DC-DC Boost converter in both the PV and Wind energy system. The HPS is tested with variable solar irradiation, temperature, and wind speed. The FLMPPT method is compared with P&O MPPT method. The proposed method provides a good maximum power operation of the hybrid system at all operating conditions. In order to combine both sources, the DC bus voltage is made constant by employing PI Controllers for the second stage of DC-DC Buck-Boost converter in both Solar and Wind Power Systems. Battery Bank is used to store excess power from Renewable Energy Sources (RES) and to provide continuous power to load when the RES power is less than load power. A SPWM inverter is designed to convert DC power into AC to supply three phase load. An LC filter is also used at the output of inverter to get sinusoidal current from the PWM inverter. The entire system was modeled and simulated in Matlab/Simulink Environment. The results presented show the validation of the HPS design.

Design and Comparison of Standalone Bladeless Wind Solar Hybrid System with the Conventional Standalone Wind Solar Hybrid System

“…A spring used for increasing oscillations of the mast with spring stiffness [9] given as = 2 (4) where is natural frequency of the mass spring system. The resultant of the vortex vibrations produces alternating lift forces [9] can be given as…”

“…So, using of single renewable source at a time may not meet the load requirement and so by combining these sources [2,3] they can be effectively used which leads to hybrid system. Standalone Hybrid power generation system [4][5][6] produces electrical energy with the use of more than one source and if one is not available another source can be used +for running the load. Standalone Solar wind hybrid power generation system uses solar and wind as sources, but the conventional wind turbine has disadvantages like higher wind speed requirement, high investment, fatal to birds, noise.…”

“…Bladeless wind turbine is an alternative solution of generating power with wind and getting rid of the disadvantages of conventional horizontal axis wind turbine and the basic principle behind the bladeless turbine is vortex induced vibrations [4]. Vortex vibrations are the vibrations that are induced with in a structure when wind is passed through it and producing oscillatory motion.…”

Fuzzy Logic Control Management with Stand Alone Photovoltaic – Fuel Cell System

“…FLC has been employed as a maximum power point tracking tool in [9]. The FLC was also used as a tool for power management in the standalone PV power system described in [10].…”

Power conversion in a grid‐connected residential PV system with energy storage using fuzzy‐logic controls

“…The fuzzy-logic control has been employed as a maximum power point tracking tool. [4][5][6][7] A fuzzy controller was used as a tool for power management in the stand-alone PV power system. 5 In a residential water supply system, 8 a fuzzylogic controller has been implemented to achieve energy saving, increased reliability, cost effectiveness, and improved system efficiency.…”