POP Analysis of AC-DC Converters: Difficulties

For AC-DC converters:

  • The POP period is now (half) the AC line cycle
  • For POP to succeed in e.g. a constant switching frequency system, the switching frequency must an integer multiple of the line frequency
  • I.e. for any control scheme, we need a whole number of conversion cycles per AC line cycle
    • Not guaranteed in a real system