Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Full-order dynamic modeling method for universal switching converter in current interrupted mode

A current discontinuous mode, switching converter technology, applied in output power conversion devices, conversion equipment with intermediate conversion to AC, electrical components, etc., can solve problems such as inability to directly apply circuits, and achieve high modeling accuracy and effective frequency band The effect of width, simplification, and efficiency

Active Publication Date: 2020-08-14
NANJING UNIV OF SCI & TECH
View PDF1 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But this nonlinear module has certain limitations, for example, it cannot be directly applied to circuits containing multi-winding inductive elements

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
  • Full-order dynamic modeling method for universal switching converter in current interrupted mode
  • Full-order dynamic modeling method for universal switching converter in current interrupted mode
  • Full-order dynamic modeling method for universal switching converter in current interrupted mode

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0074] In order to verify the effectiveness of the solution of the present invention, taking the Flyback switching converter in discontinuous current (DCM) mode as the modeling object, the modeling steps of the solution of the present invention are described in detail.

[0075] Figure 5 The main parameters of the Flyback switching converter shown are as follows: duty cycle D=0.4, input voltage V g =100V, load resistance R = 30Ohm, output capacitance Co = 100uF, output capacitance equivalent series resistance r esr = 0.02Ohm, the switching frequency is f = 60kHz, and the primary winding inductance of the transformer is L 1 = 980uH, the turns ratio of the primary and secondary sides of the transformer is n = 0.25, and the equivalent conduction loss of the MOS switch is r on =0.01Ohm, the equivalent series resistance of the output diode is r do =0.01Ohm, the input power equivalent loss is r in = 0.01 Ohm. The full-order dynamic modeling of the Flyback switching converter is...

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 a full-order dynamic modeling method for a universal switching converter in a current interrupted mode, and the method comprises the steps: constructing a to-be-modeled targetconverter topology, and expressing a target converter through a TIS module and a linear network; determining internal parameters of the TIS module and an external linear network state equation, and constructing a TIS module equivalent model; constructing a TIS module average model in a DCM mode, wherein the TIS module average model comprises a steady-state model, a large signal model and a full-order small signal model; and substituting the TIS module average model in the DCM mode into the TIS module equivalent model to obtain a steady-state model, a large-signal model and a full-order small-signal model of the target converter in the DCM mode. Modeling of a complex nonlinear part in the switching converter is completed in advance. The difficulty of user modeling can be greatly simplified,the efficiency of modeling analysis is improved, the method is suitable for steady-state and dynamic modeling of the switching power supply comprising a transformer and a coupling inductor, the frequency bandwidth of the finally obtained model can reach 1 / 2 switching frequency or above, and compared with a traditional modeling method, the method has higher modeling precision and effective frequency bandwidth.

Description

technical field [0001] The invention relates to a power converter modeling technology, in particular to a full-order dynamic modeling method for a general switching converter in a discontinuous current (DCM) mode. Background technique [0002] According to whether the inductor current is continuous, the converter can be divided into three different working modes, namely continuous working mode (Continuous Conduction Mode, CCM), discontinuous working mode (Discontinuous Conduction Mode, DCM) and critical conduction working mode (Boundary Conduction Mode). Mode, BCM). Compared with the CCM mode, the DCM mode has a sub-interval in which the inductor current is zero, so that the output sorting diode naturally satisfies the zero current shutdown (ZCS), and under the same peak value, the average inductor current in the entire cycle is smaller , so it is widely used in light load conditions. So it is necessary to study the converter modeling in DCM mode. [0003] Compared with t...

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): G06F30/20H02M1/00H02M3/28
CPCG06F30/20H02M1/00H02M3/28
Inventor 姚佳石亚洲郑凯升李科唯何新
Owner NANJING UNIV OF SCI & TECH
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com