View of HYBRID RES SYSTEM WITH BOOST CONVERTER AND MODIFIED SINGLE MPPT CONTROLLER TECHNIQUES

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Vol. 05, Issue 06,June 2020 Available Online: www.ajeee.co.in/index.php/AJEEE

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HYBRID RES SYSTEM WITH BOOST CONVERTER AND MODIFIED SINGLE MPPT CONTROLLER TECHNIQUES

Kunjan Kumar

Guide-Prof. Dr. Ashok Kumar Jhala Co-Guide-Mr. Pramod Kumar Rathore

RKDF Bhopal (M.P.)

Abstract - Due to technological development in power electronics, a new solution other than traditional and conventional forms of electricity generation for distant sectors is possible. Nowadays, the power generation through solar and wind has received special attention all over the world due to the increased rate of consumption of fuels. Performance Analysis of Hybrid PV and WECS with Proposed Converters Using Single MPPT Techniques The performance analysis of the developed hybrid converter are validated with the proposed single MPPT control algorithms using MATLAB/Simulink software. The developed converters (HCS and HL) have been connected to the hybrid solar and wind systems with the proposed single MPPT (P and O and RBFN) controllers. The performance analysis has been carried out based on availability of PV and wind input data, under three different time sections for both modes. From the analysis, it is observed that developed HL converter with RBFN based intelligent single MPPT controller provides the better results. The performance is analyzed for grid connected mode, by considering the three different load conditions and the load sharing between the renewable energy sources and grid are presented.

After birthing out the graphical user interface and setting element properties, the subsequent step is to program the graphical user interface. We will program the graphical user interface by secret writing one or additional callbacks for every one of its parts.

Callbacks area units are that execute in response to some action by the user. A typical action is clicking a push button.

Keyword: Hybrid PV GUI (Guided user interface) Total Harmonic Distortion (THD) MATLAB/Simulink.

1 INTRODUCTION

Due to technological development in power electronics, a new solution other than traditional and conventional forms of electricity generation for distant sectors is possible. Nowadays, the power generation through solar and wind has received special attention all over the world due to the increased rate of consumption of fuels. Among many renewable energy sources, solar and wind are the fastest growing energy resources because of their no emission of pollutants. Solar and wind energy have unpredictable and random behaviour when they operate individually.

Solar energy is available throughout the day with varying intensity (irradiation) level of the sun which is unpredictable. In wind energy, due to atmospheric conditions the direction of flow varies which is also highly unpredictable. Both solar and wind energy are capable of supplying large amounts of power but they are not completely reliable. It is more advantageous to use a hybrid generation system than an individual solar or individual wind generation system. Also, it can overcome the demerits of the individual system.

2 SOLAR POWER GENERATION

The unique source of almost all the energy used on earth is the sun.

Photovoltaic cells (PV) are combined to form Solar Panels. Photo means light and voltaic is related to the production of electricity. Photovoltaic technology supports the creation of electricity using light. A positive charged layer and a negative charged layer made of semiconductors constitute a PV cell.

When the semiconductor receives the rays from sunlight, the electric field across the junction between these two layers causes electricity to flow. Higher the intensity of light, stronger the flow of electricity will be. PV panels are available in various forms for use. The PV tiles which replaced the normal tiles are easy to install Natsheh & Albarbar (2013).

2.1 Photovoltaic Energy Conversion A photovoltaic system converts sunlight into electrical energy. Photovoltaic cells are the core component of a photovoltaic system. PV cells may be grouped to form panels or modules. Photovoltaic arrays are formed by grouping the modules with

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2 several cells connected in series and/or parallel. When the panels are connected in parallel, the output current increases and when connected in series the output voltage increases Villalva et al. (2009).

Solar cells are made of semiconductor materials. When a solar cell is exposed to sunlight it generates electricity. When a particle of light (photon) hits the PV cell, the energy brought by the particle is captured by the semiconductor material.

That energy hits the electrons and allows them to flow freely.

3 WIND POWER GENERATION 3.1 Introduction to Wind Energy

Wind is a form of solar energy. Wind flows owing to uneven heating of the atmosphere by the sun. The parameters used in the design of wind flow are the functions of earth's terrain, bodies of water, and vegetative cover. This wind flow or motion energy, when harvested by modern wind turbines converts such kinetic energy into mechanical power.

Sometimes, the mechanical power is used for household tasks like grinding grain or pumping water. Usually, a generator is used to convert this mechanical power into electricity to power homes, schools, farms, or business applications on small(residential) or large (utility) scales Natsheh & Albarbar (2013).

These growing trends can be attributed to the multi-dimensional benefits associated with wind energy Natsheh & Albarbar (2013): Sustainable energy: wind is a renewable energy resource; it is inexhaustible and requires no "fuel" other than the wind that blows across the earth.

Green power: the electricity produced from the wind power is said to be "clean"

because its production causes no pollution or greenhouse gas release.

As both health and environmental concerns are now considered as a serious threat to human health and to the environment, clean energy sources are becoming a growing demand.

Economic Development: wind energy is affordable and in addition it is a locally-produced source of electricity. It allows communities to save energy dollars and to invest them in their economy. Job opportunities and tax increase are other economic advantages for countries which utilize wind energy.

4 RESULT AND DISCUSSION

Performance Analysis of Hybrid PV and WECS with Proposed Converters Using Single MPPT Techniques The performance analysis of the developed hybrid converter are validated with the proposed single MPPT control algorithms using MATLAB/Simulink software. From the literature, the availability of both PV and WECS sources are alternative to each other and to check the feasibility of the developed converter operation in both individual and simultaneous modes, the availability of the RES are taken as follows, for the period 0 to 0.5 sec, the availability of wind source is maximum of 12 m/s and the PV irradiation is 600 W/m2. Similarly, for a period of 0.5 to 1 sec and 1 to 1.5 sec, wind velocity is 10 m/s with PV irradiation of 800 W/m2 and velocity of wind is 8 m/s with PV irradiation of 1000 W/m2 respectively

Simulation output power of PV and Wind system

Period (Sec) 0 to 0.5 0.5 to 1 1 to 1.5 Solar irradiations 600

W/m2 800

W/m2 1000

W/m2 PV system output

power 336 W 448 W 560 W

Wind velocity 12 m/s 10 m/s 8 m/s Wind system

output power 500 W 416 W 333 W

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Fig. 1 (a) Input Solar Irradiation Data, (b) Input Wind Speed Data

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3 The simulation output of 560 W PV system output voltage, current, and power and the simulation output of 500 W wind energy conversion system output voltage, current, and power Table 1 shows the simulation output of PV system and wind system in three different time sections based on the availability of solar irradiation and wind speed data.For period 0 to 0.5 sec, the generated power from PV source is 336 W with 600W/m2 and from the wind source is 500 W with 12 m/s input data. Furthermore, for a period of 0.5 to 1 sec the developed power is from PV source is 448 W with 800W/m2 and from the wind source is 416 W with 10 m/s input data and finally for period 1 to 1.5 sec, the developed power is from PV source is 560 W with 1000W/m2 and from the wind source is 333 W with 8 m/s input data.

The effectiveness of the proposed hybrid solar and wind system with the developed hybrid converters (HCS and HL) and the proposed single MPPT controllers (Modified P and O and Intelligent RBFN) are evaluated in both SA and GC modes under three different time sections, based on the availability of the input sources data as considered.

Fig.2 60 W PV system output Voltage, Current, and Power

4.1 Standalone System

To estimates the efﬁcacy of proposed hybrid converters and single MPPT controller features, primarily studied for standalone hybrid PV and WECS with the developed converters and then with the proposed single MPPT control techniques.

Same have been analyzed in the MATLAB/Simulink environment.

The Summary of the Simulated Hybrid System with Boost Converter Output Power Hybrid PV and WECS with Boost Converter output power

Table 1 Period (Sec) 0 to

0.5 0.5 to 1 1 to 1.5 Solar

irradiation 600

W/m2 800

W/m2 1000

W/m2 Wind velocity 12 m/s 10 m/s 8 m/s Single P and O

MPPT Controller

712.3

W 736.0 W 758.8 W

the output of a developed hybrid RES system with Boost converter and modiﬁed single MPPT controller techniques for distinct PV irradiation and speed of wind.

For period 0 to 0.5 sec, with 600W/m2 and 12 m/s input data, the developed power is 712.3 W in P and O MPPT method and 716.8 W in RBFN MPPT method. Furthermore, for aperiod of 0.5 to1sec the developed poweris 736 Win Pand OMPPT method and 742.4 W in RBFN based MPPT method and 1 to 1.5 sec, the developed power is 758.8 W in P and O MPPT method and 764.8 W in RBFN MPPT method.

From the summary of the developed hybrid system, it is clear that the proposed single RBFN based MPPT controllers give better results than the single P and O MPPT controller.

4.2 HCS Converter with Single MPPT Controller

The block diagram of proposed hybrid RES system with HLC converter and single MPPT controller for standalone system The attainment of the hybrid RES system with HCS converter along with single P and O based MPPT controller topology is analyzed and the DC link voltage, current, and power obtained using single P and O based MPPT technique employed for the hybrid RES system

The P and O technique fails to track the MPP obtained from the PV and WECS due to the non-linear characteristic of PV irradiation and Wind speed.

Fig. 3 Block Diagram of Designed Standalone Hybrid System with HCS Converter and Single MPPT Controller

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4 The performance of the hybrid RES system with HCS converter along with single RBFN based MPPT topology is analyzed and the DC link voltage, current, and power obtained using single RBFN based MPPT technique employed for the hybrid RES system The RBFN based MPPT technique not only tracks the MPP but also provides better stability during the parameter changes of irradiation and wind speed. A stable DC link voltage is obtained because of faster convergence speed of RBFN based MPPT technique.

The constant DC voltage is the primary necessity of the DC micro grid for an efficient performance

Fig. 4 Hybrid System with HCS Converter DC Link Output Voltage, Current, and Power with Single P and O

MPPT

Fig. 5 Hybrid System with HCS Converter DC Link Output Voltage,

Current, and Power with Single Intelligent RBFN MPPT

Table 2 The Summary of the Simulated Hybrid System with HCS Converter Output Power Hybrid PV and WECS with HCS Converter output power Period (Sec) 0 to 0.5 0.5 to 1 1 to

1.5 Solar irradiations 600 W/m2

800 W/m2 1000 W/m2

Wind velocity 12 m/s 10 m/s 8 m/s Single P and O

MPPT Controller 742.9 W 769.8 W 791.7 W Single RBFN based

MPPT Controller 749.6 W 774.6 W 796.8 W

the summary of the developed hybrid RES system with Boost converter and modiﬁed single MPPT controller techniques for distinct PV irradiation and speed of wind.

For period 0 to 0.5 sec, with 600W/m2 and 12 m/s input data, the developed power is 742.9 W in P and O MPPT method and 749.6 W in RBFN based MPPT method. Furthermore, for a period of 0.5 to 1 sec the developed power is 769.8 WinP and OMPPT method and 774.6 Win RBFNMPPT method and 1to1.5sec, the developed power is 791.7 W in P and O MPPT method and 796.8 W in RBFN MPPT method. From the summary of the developed hybrid system, it is clear that the proposed single RBFN MPPT controller’s gives better results than the single P and O MPPT controller.

5 CONCLUSION

Two hybrid DC-DC converters have been developed and implemented for hybrid PV and WECS with the two proposed single MPPT controllers to extract MPP from RES concurrently. The hybrid Cuk and SEPIC is developed from the traditional Cuk and SEPIC converters by rearranging the diodes D1 and D2 in the Cuk and SEPIC convert-ers and by sharing the output inductor, L2 of the Cuk converter by the SEPIC converter. Similarly, A Hybrid Luo converter is derived from the classical super lift negative out-put Luo converter by allocating the charging capacitor, C1 and DC link capacitor, C2 between the two Luo converters. The developed converters (HCS and HL) have been carry outed in MATLAB/Simulink model and the results are analyzed, the HL converter gives higher efficiency compare to the HCS converter.

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