PWM rectifier model prediction method and device based on fixed vector synthesis

A fixed vector, rectifier technology, used in output power conversion devices, conversion of AC power input to DC power output, electrical components, etc.

Active Publication Date: 2017-01-11
NORTH CHINA UNIVERSITY OF TECHNOLOGY
View PDF3 Cites 5 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there is no better method that can meet the following requirements simultaneously: 1) No need for a large number of e...

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
  • PWM rectifier model prediction method and device based on fixed vector synthesis
  • PWM rectifier model prediction method and device based on fixed vector synthesis
  • PWM rectifier model prediction method and device based on fixed vector synthesis

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0084] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be described in further detail below in conjunction with specific embodiments and with reference to the accompanying drawings.

[0085] It should be noted that all expressions using "first" and "second" in the embodiments of the present invention are to distinguish two entities with the same name but different parameters or parameters that are not the same, see "first" and "second" It is only for the convenience of expression, and should not be construed as a limitation on the embodiments of the present invention, which will not be described one by one in the subsequent embodiments.

[0086] refer to figure 1 As shown, it is a schematic flow chart of a PWM rectifier model prediction method based on fixed vector synthesis in an embodiment of the present invention, including steps:

[0087] Step 101, according to the mathematical model of the rectif...

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 PWM rectifier model prediction method and device based on fixed vector synthesis. According to a mathematical model and an instantaneous power theory of a rectifier, complex power Sk at the k moment, a complex power prediction value Sk+1 at the k+1 moment and a complex power reference value Sref are solved; according to the complex power prediction value Sk+1 and the complex power reference value Sref, a reference voltage vector vref is obtained; according to the reference voltage vector vref, SVPWM duty cycle information is obtained through prediction and control of a PWM rectifier model using fixed vector synthesis, and action time tx of a non-zero vector Vx and action time t0'' of a zero vector V0' of a double-vector method are obtained; according to the action time tx of the non-zero vector Vx and the action time t0'' of the zero vector V0', a drive signal of each switch tube of the whole rectifier is constructed. Thus, the method and device do not need a lot of enumeration calculation processes, is based on fixed vector synthesis SVPWM and has the function of freely switching between SVPWM and double vectors.

Description

technical field [0001] The invention relates to the technical field of power electronics, in particular to a PWM rectifier model prediction method and device based on fixed vector synthesis. Background technique [0002] Among the existing PWM rectifier control strategies, model predictive control is an online optimization control algorithm. Due to the advantages of simple concept, fast dynamic response, and easy implementation, it has attracted a large number of domestic and foreign scholars in the field of power electronics in recent years. applications were studied. However, the algorithm of the traditional model prediction scheme is relatively complicated, and a large number of enumerations are required to calculate the optimal voltage vector, resulting in a large amount of calculation. The traditional SVPWM control has the disadvantages of complex sectors of the judgment vector and a large amount of calculation. These shortcomings lead to the limitation of the specific...

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): H02M7/217
CPCH02M7/217H02M1/0012
Inventor 张永昌刘杰高基豪
Owner NORTH CHINA UNIVERSITY OF TECHNOLOGY
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