richaatkcmos
Electrical
hi all
i am working on solid state transformer stepping 3.3kV ac to 400V ac.
the topology is attached.
the active front end rectifier switches the IGBT based on the zero crossing detection circuit. the zcd circuit works fine. only issue i am facing now is the moment the synchronous brisge start switching (35khz), this high frequency component get coupled back onto the input power supply affecting the zcd.
can anyone suggest why this is the case.
i am working on solid state transformer stepping 3.3kV ac to 400V ac.
the topology is attached.
the active front end rectifier switches the IGBT based on the zero crossing detection circuit. the zcd circuit works fine. only issue i am facing now is the moment the synchronous brisge start switching (35khz), this high frequency component get coupled back onto the input power supply affecting the zcd.
can anyone suggest why this is the case.