Optimization control method for Boost PFC comprising active energy storage unit

An optimized control and unit type technology, applied in the field of power conversion and AC-DC power conversion, can solve the problems of slow phase cutting speed, complex conditioning circuit, slow dynamic response of BoostPFC, etc.

Active Publication Date: 2017-10-17
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
View PDF4 Cites 17 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The present invention improves on the problems of sinusoidal reference distortion in the current Boost PFC control method; slow dynamic resp

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
  • Optimization control method for Boost PFC comprising active energy storage unit
  • Optimization control method for Boost PFC comprising active energy storage unit
  • Optimization control method for Boost PFC comprising active energy storage unit

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0142] Example 1:

[0143] The optimized control method in the present invention is implemented on a three-phase interleaved parallel Boost PFC converter with Buck / Boost active energy storage units, and its topology diagram is shown in Figure 1.1 ; It is mainly composed of EMI filter, active rectifier bridge, three-phase interleaved parallel Boost PFC converter, Buck / Boost type active energy storage unit.

[0144] The main design parameters of this converter are shown in Table 1. In order to make each phase of Boost have a good current sharing effect, each phase must have good symmetry, so the design is based on the premise that each phase handles the same power, so as to use the same parameters and types of devices to achieve good results. Equalizing effect.

[0145] Table 1 Design parameters

[0146]

[0147]

[0148] The interleaved parallel Boost PFC section is designed in a conventional manner. It should be noted here that the bus capacitance C obtained accordin...

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 discloses an optimization control method for a Boost PFC comprising an active energy storage unit, and belongs to the field of AC-DC power conversion. The invention aims at a problem of reference distortion, caused by the condition that an output voltage of a rectifier bridge is taken as a sine reference, in a conventional Boost PFC mean current control method. The method comprises the steps: converting an input sine voltage into a square signal through a square wave conditioning circuit, enabling a digital controller to capture the rising and falling edges of the square signal, and generating a pure sine signal as a sine reference through an anti-error capturing phase-locking algorithm, so as to improve the reference distortion; deducing an input feedforward and load feedforward algorithm on the basis that a sine reference control method is generated, so as to improve the capability of an output voltage in resisting input and load disturbance and increase the tangential velocity of a light load tangential algorithm. The method achieves the deduction of an input current of the active energy storage unit as the reference through the generated sine signal and the output current, and saves a band-pass filter circuit which samples the input current reference of the active energy storage unit. Moreover, the method improves the power density and efficiency of a converter.

Description

technical field [0001] The invention belongs to the technical field of power conversion, in particular to the technical field of AC-DC power conversion. Background technique [0002] Electric energy is one of the most important energy sources in the current society, among which the AC grid occupies a dominant position. However, direct current is widely used in many occasions in daily life, such as computer power supply, server power supply, communication power supply, and electric vehicle charging piles. In recent years, with the rapid development of cloud computing, communication, electric vehicles and other industries, people's demand for direct current is also increasing day by day, and higher and higher requirements are placed on the efficiency, power density and power quality of the conversion device. [0003] The most commonly used single-phase AC-DC rectification topology is Boost PFC. The staggered parallel Boost PFC can evenly distribute the heat source due to the...

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
IPC IPC(8): H02M7/217H02M1/14H02M1/42
CPCH02M1/14H02M1/4233H02M7/2176Y02B70/10
Inventor 任小永白雷惠琦李坤奇吴羽郭哲辉
Owner NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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