Abstract
The goal of this thesis is to evaluate the performance of a hybrid solar wind, fuel cell and battery energy system through Mat lab simulation studies. The main objective of this study is the development of dynamic models of an off grid (standalone) solar wind turbine, fuel cell and battery system which is used for charging and discharging. Maximum power can be extracted from PV module by using Maximum Power Point Tracking (MPPT) by controlling the duty cycle of a switch. The developed model of the wind energy conversion system consists of dynamic models for a wind turbine as well as induction motor or Permanent Magnet Synchronous Machine. In this thesis we have to control the sources depending upon the load condition. The solar installation cost is less than the remaining sources. So solar supplies the load continuously. If solar cell generated power is not sufficient, then the wind supplies. And if solar and wind generated power are not sufficient, then fuel cell will be operated along with solar and wind. A battery which is used for backup purpose will supply if solar, wind, fuel cell generated power is not sufficient.
Highlights
The usage of non renewable energy sources causes a hike in generation cost
Standalone system has been generated by single source systems using solar photo voltaic (PV), wind turbine, fuel cell, biomass, diesel generators and battery for back up purpose or by the combining two or more types of these electricity generating sources (Hybrid Energy Systems)
Before wind supplies power fuel cell is used because wind turbine blades have to rotate and have to settle [13]
Summary
The usage of non renewable energy sources (conventional energy sources) causes a hike in generation cost. Standalone (off grid) system has been generated by single source systems using solar PV, wind turbine, fuel cell, biomass, diesel generators and battery for back up purpose or by the combining two or more types of these electricity generating sources (Hybrid Energy Systems). PV cell is shown in Figure 2 and equations given below. Maximum power [7] can be obtained by varying source but it is very difficult to vary source because Current – voltage curve of PV cell is non linear (Figure 4).
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