Power Factor of AC Controllers for Inductive Loads

A general relationship for the input power factor of ac controllers with inductive loads is derived in this paper. Its simplified form is given for the phase angle, integral cycle, and symmetrical pulsewidth modulated controllers. The latter may or may not have a freewheeling path for the load.

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[2]  T. G. Bland,et al.  Power Factor of Thyristor-Controlled Loads with Sinusoidal Supply Voltage and Integral-Cycle Triggering , 1977, IEEE Transactions on Industrial Electronics and Control Instrumentation.

[3]  G. N. Revankar,et al.  Symmetrically Pulse Width Modulated AC Chopper , 1977, IEEE Transactions on Industrial Electronics and Control Instrumentation.