ABSTRACT:
The sun and wind based
generation are well thoroughly considered to be alternate source of green power
generation which can mitigate the power demand issues. This paper introduces a
standalone hybrid power generation system consisting of solar and permanent
magnet synchronous generator (PMSG) wind power sources and a AC load. A supervisory
control unit, designed to execute maximum power point tracking (MPPT), is
introduced to maximize the simultaneous energy harvesting from overall power
generation under different climatic conditions. Two contingencies are considered
and categorized according to the power generation from each energy source, and
the load requirement. In PV system Perturb & Observe (P&O) algorithm is
used as control logic for the Maximum Power Point Tracking (MPPT) controller
and Hill Climb Search (HCS) algorithm is used as MPPT control logic for the
Wind power system in order to maximizing the power generated. The Fuzzy logic
control scheme of the inverter is intended to keep the load voltage and frequency
of the AC supply at constant level regardless of progress in natural conditions
and burden. A Simulink model of the proposed Hybrid system with the MPPT
controlled Boost converters and Voltage regulated Inverter for stand-alone application
is developed in MATLAB.
KEYWORDS:
1. Renewable
energy
2. Solar
3. PMSG
Wind
4. Fuzzy controller
5. P&O
SOFTWARE: MATLAB/SIMULINK
BLOCK DIAGRAM:
Figure 1. Block diagram of
PV-Wind hybrid system
EXPECTED SIMULATION RESULTS:
Figure 2. PV changing irradiation level
Figure 3. Output voltage for PV changing irradiation
level
Figure 4. Wind speed changing level
Figure 5. Output current wind
Figure 6. Output Voltage wind
Case 1 : PI voltage
regulated inverter
Figure 7. Output voltage for inverter
Figure 8. Power generation of the hybrid system under
varying wind speed and irradiation
Case 2 : fuzzy logic
voltage regulated inverter
Figure 9. Output voltage for inverter
Figure 10. Power generation of the hybrid system under
varying wind speed and irradiation
CONCLUSION:
Nature has
provided ample opportunities to mankind to make best use of its resources and
still maintain its beauty. In this context, the proposed hybrid PV-wind system
provides an elegant integration of the wind turbine and solar PV to extract
optimum energy from the two sources. It yields a compact converter system,
while incurring reduced cost.
The proposed
scheme of wind–solar hybrid system considerably improves the performance of the
WECS in terms of enhanced generation capability. The solar PV augmentation of
appropriate capacity with minimum battery storage facility provides solution
for power generation issues during low wind speed situations.
FLC voltage
regulated inverter is more power efficiency and reliable compared to the PI
voltage regulated inverter, in this context FLC improve the effect of the MPPT
algorithm in the power generation system of which sources solar and wind power
generation systems.
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