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ABSTRACT

Date post: 13-Jan-2016
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ABSTRACT. Photovoltaic (PV) is one of the clean and free-pollution renewable energy, but it is an unreliable source because of the intermittent feature of weather. - PowerPoint PPT Presentation
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ABSTRACT • Photovoltaic (PV) is one of the clean and free-pollution renewable energy, but it is an unreliable source because of the intermittent feature of weather. • Well integration of the MPPT technique with PV array model will ensure the system operates at its maximum power point at different weather conditions and solar irradiation. • This paper use the MATLAB Simulink to simulate the model.
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Page 1: ABSTRACT

ABSTRACT

• Photovoltaic (PV) is one of the clean and free-pollution renewable energy, but it is an unreliable source because of the intermittent feature of weather.

• Well integration of the MPPT technique with PV array model will ensure the system operates at its maximum power point at different weather conditions and solar irradiation.

• This paper use the MATLAB Simulink to simulate the model.

Page 2: ABSTRACT

INTRODUCTION

• Recently, the needs of renewable energy resources increase due to the fuel energy crisis and the global warming issue. Solar energy is one of the most important renewable energy

• Solar energy using photovoltaic (PV) has several advantages, e.g., no noise and free pollution.

• Two operational problems, the efficiency is very low especially under low irradiation conditions and in the intermittent weather condition the electric power changes continuously.

Page 3: ABSTRACT

• What is MPPT and why it is needed? (Maximum power point tracking)It is needed a controller (MPPT) to achieve the highest efficiency and provide a stable power under the intermittent weather condition

• Why IC technique ?It shows good performance under the intermittent of solar irradiance

The simulation result will show how good is the performance of this IC technique.

Page 4: ABSTRACT

PV Model• A solar cell basically is a p-n semiconductor

junction. When exposed to light, a dc current is generated.

Page 5: ABSTRACT

PV Characteristic

Page 6: ABSTRACT

IC MPPT Technique• The incremental conductance method is

developed under the fact of slope of the PV array power curve is zero at the MPP

IC MPPT Algorithm

Page 7: ABSTRACT

Block Diagram of the Proposed PV System

PV ARRAY

BOOSTCONVERTER

PVINVERTER

3-PHASEGRID

IC MPPT CONTROL

I

V

PV INVERTERCONTROL

AC

DCDC

Page 8: ABSTRACT

SIMULATION SYSTEM

Page 9: ABSTRACT

Under mask the system

Page 10: ABSTRACT

Simulation under constant solar irradiance• The maximum standard operating for constant solar irradiance is assumed

to be 1000 W/m2 in the study.

(A) The measured output of PV Module (B) The respond of IC MPPT tracking algorithm

Page 11: ABSTRACT

Under 1000 W/m2 of solar irradiance, The duty cycle for boost converter is a constant value 0.45 and the booster convert around 92kW of power with constant ouput voltage 500 V to the PV inverter.

Output from boost converter

Page 12: ABSTRACT

The PV module provides 100kW and the boost converter convert 92kW of energy

Comparison of the measured output of PV module with output of boost converter

Page 13: ABSTRACT

Simulation under decreasing solar irradiance

(A) Decreasing of solar irradiance (B) Duty cycle of boost converter

The figure shows the decreasing solar irradiance (1000 W/m2- 800 W/m2 -250 W/m2).

Page 14: ABSTRACT

(A) The measured output of PV Module (B) The respond of IC MPPT tracking algorithm

Page 15: ABSTRACT

The figure shows the power, voltage, current of boost converter. Under (1000 W/m2- 800 W/m2 -250 W/m2) of solar irradiance, the booster convert around 92kW - 80 kW - 25 kW of power. The

booster maintains the output of voltage to be 500 V to the PV inverter.

Output from boost converter

Page 16: ABSTRACT

The PV module provides 100kW (1000 W/m2) 80kW (800W/m2) 25kW (250 W/m2) and the boost converter convert 92kW, 74kW, 20 kW

Comparison of the measured output of PV module with output of boost converter

Page 17: ABSTRACT

Simulation under different solar irradiance

Figure B shows the duty cycle of boost converter responding to different solar irradiance. In fact, an extreme variation of solar irradiance occur rarely.

The figure A shows the variations of solar irradiance (600 W/m2- 800 W/m2 - 400 W/m2 -600 W/m2)

Page 18: ABSTRACT

(A) The measured output of PV Module (B) The respond of IC MPPT tracking algorithm

Page 19: ABSTRACT

The figure shows the measurement output from boost converter. The figure shows the power, voltage, current of boost converter. Under (600 W/m2- 800 W/m2 - 400 W/m2 -600 W/m2) of solar irradiance, the booster maintains output voltage to be 500 V constantly.

Output from boost converter


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