To proceed the single phase voltage controller, the upper SCR present in the antiparallel connection is conducting but the lower SCR is not conducting..Can you please answer this question ?
note:Eventhough delay angle of 0.015 seconds is provided for the lower SCR of antiparallel connection it is not conducting.During the negative half cycle ouput follows the input .
I provided time delay of 0.005s ,pulse width of 0.01s total time period of 0.02s,but it's not conducting
I replaced different switches instead of SCR.,but no change in the output
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