Performance Analysis of V2G and G2V System with Hybrid Renewable Energy Sources

Authors: Surendra Kumar Chourasiya, Professor. Vinay Pathak

Certificate: View Certificate

Abstract

Wind power is one of the most developed and rapidly growing renewable energy sources. The thesis is dedicated to an in-depth analysis of DFIG PV and wind energy generators, system configurations, power converters, control schemes and dynamic and steady state performance of practical wind energy conversion systems (WECS). This thesis focuses on method for controlling the DC link voltage and maximum power point tracking (MPPT) of the photovoltaic (PV) system in a hybrid PVwind turbine system is introduced. The system under study is a modified PV-DFIG structure. In this system, the PV output power is injected into the grid through the both grid-side and rotor-side converters of the DFIG. The proposed control system controls the DC-link voltage and the MPPT of the PV system together. This system is economically justifiable given to the elimination of the PV dedicated converter and can inject the PV output power into the grid more efficiently. The results are simulated in the MATLAB/SIMULINK software environment. The dynamic model is developed using the machines equivalent circuit and is expressed in the stationary, rotor and the synchronous reference frames for evaluating the performance of the machine. The stator of the DFIG is directly interfaced to the grid and by controlling the rotor voltage by a two-level back-to-back converter the grid synchronization and power control is maintained. The Grid Side Converter (GSC) is modified for feeding regulated power to the grid. Rotor Side Converter (RSC) is controlled for achieving MPPT and Unity Power Factor (UPF) and with and without PV system Both Simulation done in MATLAB and Voltage, Current, real and reactive power for input and output Result carried.

Introduction

Renewable energy is power derived from natural possessions, such as solar, wind, waves, or geothermal energy. These resources are renewable and can be recycled naturally. Therefore, compared to the depletion of traditional fossil fuels [1], these sources of information are considered inexhaustible. The global power crunch provides a new impetus for the development or maturity of clean or renewable energy. [2]. In addition to the decline in fossil fuel transportation worldwide, another major reason fossil fuels do not work is the pollution associated with burning fossil fuels. In contrast, it is well known that compared to traditional energy sources, renewable energy sources are cleaner, or energy produced has no adverse effects on pollution. Correspondingly, the solar power generation system is proposed in Figure 1.2. A solar cell or panel comprises a model derived from solar cells connected in series or parallel to provide the required currents and energy. solar intertie photovoltaic (PV) systems are not particularly complex. First there are panels, which collect the sunlight and turn it into electricity. The DC signals are fed into an inverter, which converts the DC into grid-compatible AC power (which is what you use in your home). Various switch boxes are included for safety reasons, and the whole thing is connected via wires and conduit.

Conclusion

Conclusions A new methodology for controlling the frequency of a microgrid through DFIG was proposed in this paper. The droop control implemented in the GSC together with the BESS connected in the DC link of the back-to-back converter of the DFIG, succeeded in successfully regulating the frequency of the microgrid at the moment of the disturbance. Implementing the droop control in the GSC of DFIG allowed the wind turbine to operate at all times at the point of maximum power extraction, while the power required for frequency control was provided by BESS. From the point of view of frequency control, the droop control showed great results in both super-synchronous and sub-synchronous operation, decreasing the accommodation times and the frequency nadir when compared to the frequency of the microgrid without DFIG intervention. On the other hand, when using BESS, the wind system can become more efficient because when DFIG operates connected to the network and in super-synchronous mode, the battery can be charged while BESS keeps the DC link voltage controlled, in order to maintain stored power to assist in frequency regulation.