Wind driven Induction
Generator with Vienna Rectifier and PV for Hybrid Isolated Generations
ABSTRACT:
Hybrid PV-wind generation shows higher availability
as compared to PV or wind alone. For rural electrifications, researches are
focused on hybrid power system which provides sustainable power. The variable
voltage and frequency of the self excited induction generator (SEIG) is
rectified through Vienna rectifier (three switches) to the required D.C voltage
level and fed to common D.C bus. The variable output voltage of PV module is
controlled by DC/DC converter using proposed fuzzy logic controller and fed to
common D.C bus. The DC bus collects the total power from the wind and photovoltaic
system and used to charge the battery as well as to supply the A.C loads
through inverter. A dynamic mathematical model and MATLAB simulations for the
entire scheme is presented. Results from the simulations and experimental tests
bring out the suitability of the proposed hybrid scheme in remote areas.
KEYWORDS:
1. DC-DC converter
2. Fuzzy logic
3. SEIG
4. PV array
5. Vienna Rectifier
6. Wind energy.
SOFTWARE: MATLAB/SIMULINK
BLOCK DIAGRAM:
Figure
1. Schematic diagram of solar-wind hybrid scheme
EXPECTED SIMULATION RESULTS:
Figure
2: Simulated and Experimental waveforms
Figure 3(a)
Conventional Six Pulse Converter
Figure
3(b) vienna Rectifier
Figure 3(c) per phase input voltage and
current waveforms of vienna Rectifier
CONCLUSION:
A
hybrid scheme for isolated applications, employing solar and wind driven
induction generator with Vienna rectifier, is proposed with fuzzy logic
controller, with optimized rule-base. Hence it is very suitable for the rural
electrification in remote areas where grid cannot be accessed. The photovoltaic
characteristics and capacitance requirements of SEIG are discussed. Using the
mathematical model described the dynamic characteristics of the hybrid scheme
to maintain almost the desired load voltage is also discussed. The simulated
results are focused on both the steady-state and dynamic behavior of the hybrid
scheme which demonstrates the validity of the proposed model. The simulation
and the experimental result of hybrid scheme shows the operation of the
controller for constant load voltage had inherently resulted in balancing of
power between the two sources while supplying constant power to the load.
REFERENCES:
[1]
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2012.
[2]
S.Meenakshi, K.Rajambal, C.Chellamuthu, and S.Elangovan, “Intelligent
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IEEE, pp 8-15, 2006.
[3]
Ashraf A.Ahmed, Li Ran, Jim Bumby, “Simulation and control of a Hybrid PV-Wind
System”, Power Electronics Machines & Drives, PEMD 4th IET conference,
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[4]
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Power Generators Based on PV Array And Wind Driven Induction Generator”,
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[5] Hao Chen,
Dionysios C. Aliprantis , “ Analysis of Squirrel-cage Induction Generators with
Vienna Rectifier for Wind Energy Conversion System”, IEEE Transactions on
Energy Conversion, Vol.26, no.3, 2011.
