Development of DC-AC link converter for wind generator
The usage of wind power as alternative source of energy in Malaysia is very scarce and perhaps limited to several private establishments. There is urgent need to locally develop the low cost wind turbine generator that has the capability to not only supply electricity to respective household but can...
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| Main Authors: | , , , |
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| Format: | Conference or Workshop Item |
| Published: |
2009
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| Subjects: | |
| Online Access: | http://eprints.uthm.edu.my/3284/ http://eprints.uthm.edu.my/3284/1/Development_of_DC%2DAC_Link_Converter_for.pdf |
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| Summary: | The usage of wind power as alternative source of
energy in Malaysia is very scarce and perhaps limited to
several private establishments. There is urgent need to
locally develop the low cost wind turbine generator that has
the capability to not only supply electricity to respective
household but can be connected to power grid so that excess
power could be sold back to the local utility company.
Recent developments of power electronic converters allow
stable supply needed for grid transfer in respect to nature of
wind dynamics, enhanced power extraction and low total
harmonic distortion (THD). In this project, an inverter
circuit with suitable control scheme design is developed to
be used with a wind turbine generator. From DC output of
the generator, the DC-DC boost converter will step up the
voltage to a nominal DC voltage at the grid. The inverter
then will turn the voltage to sinusoidal AC to be transferred
at grid. The duty cycle of signal controlling MOSFET
transistors in the inverter will be controlled voltage source
Pulse-Width Modulated (PWM) signal generated by
microcontroller PIC16F877A based on pure sine wave data
stored in the microcontroller memory. The lab-scale
experimental rig involves simulation wind speed by running
geared DC motor coupled with 500W wind generator where
the prototype circuit will be connected at generator output.
Expected circuit output is single phase 240V sine wave
voltage which is nominal grid voltage. The next phase of the
rig will involve testing the prototype circuit with site
installed 500W wind generator. The necessary performance
parameter will be evaluated. |
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