Patent ID: 8787045

Claim:
A control method of inhibiting harmonic distortion of an input current for use in a power factor corrector, the power factor corrector being connected with a power conversion circuit and comprising a computing circuit, the power factor corrector being operated in a first mode or a second mode, the control method comprising at least steps of: (a) receiving a current command signal from the computing circuit; (b) comparing the current command signal with an input signal of the power conversion circuit, thereby generating a current error signal; (c) adjusting the current error signal; (d) judging whether the power factor corrector is operated in a transition interval between the first mode and the second mode, wherein if the judging condition is satisfied, an addition operation is performed on the unadjusted current error signal, a feedforward signal and the adjusted current error signal, thereby generating a current control signal; and (e) generating a switch control signal according to the current control signal, and controlling a switching element of the power conversion circuit according to the switch control signal, thereby inhibiting harmonic distortion of the input current.