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

Single Strategy Model Predictive Control Method for Buck Converter

A technology of model predictive control and converter, which is applied in the direction of control/regulation system, conversion of DC power input to DC power output, instruments, etc., can solve problems such as complex design of model predictive control strategy, and achieve simple and easy error compensation method, The mathematical model is simple and the calculation amount of solution is small

Inactive Publication Date: 2019-02-01
XIAN UNIV OF TECH
View PDF3 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a single-strategy model predictive control method for Buck converters, which solves the problems in the prior art that need to be combined with other compensation strategies to eliminate control errors and the design of model predictive control strategies is complicated

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
  • Single Strategy Model Predictive Control Method for Buck Converter
  • Single Strategy Model Predictive Control Method for Buck Converter
  • Single Strategy Model Predictive Control Method for Buck Converter

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0095] The Buck converter system parameters of the present embodiment are as follows: input voltage V in =24V, inductance L=100μH, inductance parasitic parameter is 0.2 ohm, output capacitor C=50μF, capacitance equivalent parasitic parameter is 0.07 ohm, switching period T=10μs, rated output current 2A, system output voltage expectation V ref =12V.

[0096] The circuit topology of an ideal Buck converter is as follows figure 2 shown.

[0097] image 3 It is the voltage output result when the converter starts with rated load R=6Ω.

[0098] Figure 4 For the converter with a rated load R = 6Ω, the input power is from V in = 24V sudden drop to V in The voltage output result of the converter when =15V.

[0099] Figure 5 for the input power supply as V in =24V, the voltage output result of the converter when the load resistance suddenly increases from the rated load R=6Ω to R=9Ω.

[0100]The single-strategy model predictive control method for the BUCK converter proposed...

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 single strategy model predictive control method for a Buck converter, which is specifically implemented according to the following steps: Step 1: Establish an ideal simplified discrete model of the Buck converter under the current continuous operation mode; Step 2: Determine the voltage and current characteristics of the simplified discrete model ; Step 3: Determine the objective function of the model predictive control; Step 4: Solve the duty ratio of the predictive control; Step 5: Correct the control error. The present invention is based on the simplified discrete model of the ideal Buck converter for predictive control strategy decision-making, the mathematical model is simple, directly provides an analytical formula for predictive control decision-making, the amount of calculation for solving optimization problems is small, and error compensation is performed only by correcting the expected value of the optimized objective function. Online computing for control decisions can be realized.

Description

technical field [0001] The invention belongs to the technical field of DC power converter control, and in particular relates to a single strategy model predictive control method for a Buck converter. Background technique [0002] With the rapid development of power electronics technology and microelectronics technology, switching power supply systems are increasingly used in aviation, military, civil and other fields. At present, the high-frequency development characteristics of switching power supply also promote the development direction of its miniaturization, which makes its application in energy saving and other fields also play a decisive role. However, the power system often works in a harsh environment. The harsh working conditions and stress environment greatly challenge the performance and reliability of the power system. The core part of the switching power supply is the DC-DC converter. The operating characteristics of the converter determine the product quality...

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 Patents(China)
IPC IPC(8): H02M3/157
CPCH02M3/157H02M1/0025
Inventor 冷朝霞刘庆丰
Owner XIAN UNIV OF 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