Check patentability & draft patents in minutes with Patsnap Eureka AI!

Harmonic state space-based DC/DC converter modeling method

A harmonic state and modeling method technology, applied in the direction of output power conversion device, DC power input conversion to DC power output, instruments, etc., can solve problems such as ignoring ripples, achieve improved accuracy, increased complexity, and large The effect of using space

Active Publication Date: 2019-04-12
NANJING INST OF TECH
View PDF5 Cites 4 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the modeling of DC / DC converters is mainly based on the state-space averaging method, that is, according to the two states of the switching device, the circuit is transformed into an equivalent linear, time-invariant continuous circuit to simplify the model, but this The approach is based on sacrificing accuracy and ignoring the ripple due to normal switching

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 state space-based DC/DC converter modeling method
  • Harmonic state space-based DC/DC converter modeling method
  • Harmonic state space-based DC/DC converter modeling method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0044] This specific embodiment discloses a DC / DC converter modeling method based on harmonic state space, such as figure 1 shown, including the following steps:

[0045] S1: List the steady state equations at different stages according to the working principle of the DC / DC converter;

[0046] S2: Preprocessing the steady state equations in all stages of step S1 to obtain the periodic time-varying state equations, and then performing Fourier transform on the periodic time-varying state equations to obtain the Fourier series triangular form of the periodic time-varying state equations;

[0047] S3: converting the Fourier series triangular form of the periodic time-varying state equation obtained in step S2 into a harmonic state-space equation;

[0048] S4: Solve the harmonic components of the state variables in the harmonic state space;

[0049] S5: Inverse Fourier transform the harmonic component obtained in step S4 to the time domain, and then compare it with the model buil...

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 harmonic state space-based DC / DC converter modeling method. The harmonic state space-based DC / DC converter modeling method comprises the following steps of S1, listing steadystate equations at different stages according to a working principle of a DC / DC converter; S2, pre-processing the steady state equations of all stages in the step S1 to obtain a period time-varying state equation, and performing Fourier conversion on the period time-varying state equation to obtain a Fourier series triangular form of the period time-varying state equation; S3, converting the Fourier series triangular form of the period time-varying state equation obtained in the step S2 to a harmonic state space equation; S4, solving a harmonic component of a state variable in a harmonic state space; and S5, performing Fourier inversion on the harmonic component obtained in the step S4 to time domain, and comparing with a model built by Matlab. The modeling accuracy can be improved as well as the complexity is not improved.

Description

technical field [0001] The invention relates to power electronics technology, in particular to a DC / DC converter modeling method based on harmonic state space. Background technique [0002] With the development of new energy grid-connected technology, the number of distributed power sources connected to the power system is increasing, and the modern power electronic system has become a multi-adjustment, multi-objective, nonlinear complex system. The overall optimization must be achieved on the basis of mathematical modeling and computer simulation, so as to determine the best setting value of each adjustment point. Therefore, power electronics modeling and simulation is becoming more and more important to the application of power electronics technology. [0003] The DC / DC converter is a common power electronic device, which can convert a fixed DC power supply into a variable DC voltage, and change the average value of the output voltage and current by adjusting the duty cyc...

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): H02M3/156H02M1/14
CPCH02M1/14H02M3/156
Inventor 李先允王建宇王书征杨城朱晶
Owner NANJING INST OF TECH
Features
  • R&D
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

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

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com