Digital frequency conversion control method for power factor corrector
A technology of power factor correction and digital frequency conversion, which is applied in the direction of output power conversion devices, high-efficiency power electronic conversion, electrical components, etc., can solve the problems of high control costs, devices are susceptible to external interference, and are susceptible to environmental interference, etc., to achieve improved Control accuracy and power factor, reduce the control of peripheral circuit devices, and ensure the effect of efficiency and power factor
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[0022] A non-limiting embodiment is given below in conjunction with the accompanying drawings to further illustrate the present invention.
[0023] refer to Figure 1-4 As shown, the flow chart of the digital frequency conversion control method of an embodiment of the present invention specifically includes the following steps:
[0024] First define the following parameter quantities:
[0025] P o - output power, f s - switching frequency, D - duty cycle, L - input boost inductor, u i - input voltage analog, u o - output voltage analog, i L -Inductance current analog quantity, i o - Output current analog, u iD - input voltage digital quantity, u iD(min) -minimum input voltage digital quantity, u oD - output voltage digital quantity, i LD - Inductor current digital quantity, i oD -Output current digital quantity, △u-voltage link deviation signal, △i-current link deviation signal, K p - Adjustable scale factor, T i - Adjustable integral time constant.
[0026] Step...
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