A control method, device, equipment and storage medium for power factor correction
A technology of power factor correction and control method, applied in the field of power factor correction control and computer-readable storage media, can solve the problems of reducing power factor correction control accuracy and affecting system stability, so as to improve control accuracy and improve Stability, the effect of reducing frequency ripple
Active Publication Date: 2022-06-03
INSPUR SUZHOU INTELLIGENT TECH CO LTD
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Problems solved by technology
Because the voltage loop of the traditional power factor correction control does not deal with the part of the input frequency, there will be twice the frequency ripple (ripple) of the input voltage at the DC output terminal, which will greatly affect the stability of the system and reduce the power factor. Corrected Control Accuracy
Method used
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[0048] Step 101: Obtain the input voltage value, input current value and output voltage value of the power factor correction circuit.
[0049] Wherein, the power factor correction circuit in this step can be a circuit for completing the power factor correction function.
[0055] The processor may also calculate the electrical
[0059] In this embodiment, the embodiment of the present invention is based on the input voltage value, the output voltage value and the preset voltage reference value,
[0061] Step 201: Obtain the input voltage value, input current value and output voltage value of the power factor correction circuit.
[0066] That is to say, this step may include: using the output voltage value and the preset voltage reference value to perform voltage loop control
[0068] Step 203: According to the original current reference value, use the Proney algorithm to calculate the angular frequency.
[0077] Specifically, this step is similar to step 103, and will not be repeate...
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The invention discloses a power factor correction control method, device, equipment and computer-readable storage medium. The method includes: acquiring the input voltage value, input current value and output voltage value of the power factor correction circuit; according to the input voltage value, Output voltage value and preset voltage reference value, use the Prony algorithm to obtain the current reference value of the current loop control; use the current reference value and input current value to perform current loop control, and output the corresponding pulse width modulation signal to control the power factor correction circuit The switching tube in the switch correspondingly turns on or off; the present invention uses the Prony algorithm to determine the frequency of the input voltage, and determines the range of the band-stop filter, so that the calculated current reference value can be used to inject the corresponding compensation amount, reducing the power factor correction circuit. The frequency ripple in the DC output improves the stability of the system and the control accuracy of power factor correction.
Description
A control method, device, device and storage medium for power factor correction technical field The present invention relates to the technical field of power electronics, in particular to a control method, device and device for power factor correction. devices and computer-readable storage media. Background technique In the prior art, the power factor correction (Power Factor) of the power supply (power supply unit) Correction, PFC) control is calculated through the voltage loop control, output to the current loop control calculation, and finally the current The result of the loop calculation is reflected on the switch that controls the power factor correction circuit to adjust the pulse width (Pulse Width). Modulation, PWM) duty cycle to control the controllable switch (such as MOS tube) of the power factor correction circuit, so as to achieve the power factor for the purpose of correction. As shown in Figure 1, the dual-loop control method of traditional power ...
Claims
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IPC IPC(8): H02M1/42H02M1/14H02M1/15
CPCH02M1/4208H02M1/143H02M1/15H02M1/0025Y02B70/10
Inventor 何承叡
Owner INSPUR SUZHOU INTELLIGENT TECH CO LTD