Harmonic compensation method and device for PFC circuit, and terminal equipment

A harmonic compensation and circuit technology, applied in the direction of output power conversion devices, electrical components, high-efficiency power electronic conversion, etc., can solve the problems of excessive input harmonics of PFC circuits, etc., to reduce resource overhead and ensure stability Effect

Active Publication Date: 2020-12-01
ZHANGZHOU KEHUA TECH CO LTD +1
View PDF6 Cites 6 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In view of this, an embodiment of the present invention provides a harmonic compensation method, device, and terminal equipment for a PFC circuit to solve the problem of excessive input harmonics of a PFC circuit in the prior art

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Harmonic compensation method and device for PFC circuit, and terminal equipment
  • Harmonic compensation method and device for PFC circuit, and terminal equipment
  • Harmonic compensation method and device for PFC circuit, and terminal equipment

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0023] In the following description, specific details such as specific system structures and technologies are presented for the purpose of illustration rather than limitation, so as to thoroughly understand the embodiments of the present invention. It will be apparent, however, to one skilled in the art that the invention may be practiced in other embodiments without these specific details. In other instances, detailed descriptions of well-known systems, devices, circuits, and methods are omitted so as not to obscure the description of the present invention with unnecessary detail.

[0024] In order to illustrate the technical solutions of the present invention, specific examples are used below to illustrate.

[0025] see figure 1 , an embodiment of the present invention provides a harmonic compensation method for a PFC circuit, including:

[0026] S101: Obtain the current load rate of the target PFC circuit;

[0027] S102: Determine the target carrier frequency of the targ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention is applicable to the technical field of power electronics, and provides a harmonic compensation method and device for a PFC circuit, and terminal equipment. The method comprises the following steps: obtaining the current load rate of a target PFC circuit; determining the target carrier frequency of the target PFC circuit under a current load rate based on the corresponding relationship between the load rate and the carrier frequency; adjusting a target carrier according to the target carrier frequency; superposing the adjusted target carrier with a target modulation signal of thetarget PFC circuit to obtain a PWM control signal; and controlling the PFC circuit according to the PWM control signal so as to compensate current harmonics of the target PFC circuit. According to the harmonic compensation method for the PFC circuit, the frequency of the target carrier is adjusted, so that the switching frequency of the PWM control signal is adjusted, the harmonic component of the circuit can be controlled on the premise of controlling the calculated amount, the resource consumption of a chip is reduced, and the control stability is ensured.

Description

technical field [0001] The invention belongs to the technical field of power electronics, and in particular relates to a harmonic compensation method, device and terminal equipment of a PFC circuit. Background technique [0002] In computer servers, communication power systems and special processing processes, large-capacity DC power supplies are usually required. When the load requires the power supply to provide thousands of amperes or even higher currents, if a single power supply is used, the switching stress of the switch tube and rectifier diode will be become very substantial. The interleaved parallel PFC (Power Factor Correction, power factor correction) circuit can reduce the effective value of the input current ripple and the output capacitor ripple current without increasing the switching loss, increase the frequency of the input current ripple, and improve the power level of the circuit , so the PFC circuit has high application value. [0003] Since the input h...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
Patent Type & Authority Applications(China)
IPC IPC(8): H02M1/12H02M1/42
CPCH02M1/12H02M1/42Y02B70/10
Inventor 卢雄伟唐新雨许永志陈海飞
Owner ZHANGZHOU KEHUA TECH CO LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap