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Inverter filter help

Christina

Jul 26, 2013
1
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Jul 26, 2013
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Sir,
I am doing a project on single phase grid tied inverter(H bridge).
circuit and waveform are attached.
I am using a 24V, (0-3A) DC supply source. It is inverted to 22V ac and is stepped up to 230V ac using a transformer. PWM technique is used for inverting, with the help of microcontroller AT89c51. I obtained the voltage waveform, which needs to be filtered to get sinusoidal wave. I tried designing LC filter, but as I inserted the filter, input dc current increased to high value. so I turned off dc supply. Please help me in designing filter. And how can I connect my inverter to 230V

Christina
 

Attachments

  • inverter.jpg
    inverter.jpg
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  • output voltage.jpg
    output voltage.jpg
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