A Review on Design and Development of high Reliable Hybrid Energy Systems with Droop Control Techniques

Abstract

Hybrid Energy system is a combination of two or more different types of energy resources. Now a day this hybrid energy system plays key role in various remote area power applications. Hybrid energy system is more reliable than single energy system. This paper deals with high reliable hybrid energy system with solar, wind and micro hydro resources. The proposed hybrid system cable of multi mode operation and high reliable due to non communicated based controllers (Droop Characteristic Control) are used for optimal power sharing. Size of battery can be reduced because hydro used as back up source and Maximum power point Tracking also applied to solar and wind energy systems. Keyword: Droop controllers INTRODUCTIONToday the world is mainly facing two problems. One is the power crisis that is fast depleting of fossil fuels and other one is pollution problem like carbon emission and global warming. The best solution for this problem is utilization of renewable energy resources. Renewable energy resources are abundant in nature, free of cost and non pollutant. Among the all renewable energy resources Solar and wind are more popular because of its huge potential in nature. In the process of Utilization of Renewable energy resources we have to face some challenges like reliability, cost, efficiency and Stability. The main drawback of renewable energy resources is they are inconsistency or more fluctuating in nature and depends upon weather atmospheric conditions. In order to provide continue power supply integrate two or more resources and provide storage system. Integrated system of two or more renewable energy systems, also known as Hybrid Renewable Energy System (HRES) [4], is gaining popularity because the sources can complement each other to provide higher quality and more reliable power to customer than single source System. A HRES can be standalone or grid connected. Standalone systems need to have generation and storage capacity large enough to handle the load. In a grid connected system, the size of storage device can be relatively smaller because deficient power can be obtained from the grid. Hybrid energy system that complements the drawbacks in each individual energy resources. Therefore, the design goals for hybrid power system are the minimization of power production cost, minimization of power purchase from grid (if it is connected to grid), reduction in emission, reduction of the total lifecycle cost and increase in reliability of the power generation of system. Wind and solar power generation are two of the most promising renewable power generation technologies. The growth of wind and photovoltaic (PV) power generation systems has exceeded the most optimistic estimation. Multi-source hybrid alternative energy systems (Figure 4) with proper control have great potential to provide higher quality and more reliable power to customers than a system based on a single resource. And because of this, hybrid energy systems have caught worldwide research attention.

Performance Comparison of Fuzzy Logic and Proportional-integral for an Electronic Load Controller

“…Some applications that use these devices [4], for example: power conversion, motor speed control, control the efficiency of lighting and air conditioning, interface from the solar panels and many others. Recent studies about power energy has been conducted by [5]. Control of DFIG Stator Voltage on Autonomous Micro Hydro has been presented by [6].…”