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

Model Predictive Control Method for Reduced Matrix Converter with Magnetic Bias Control

A technology of model predictive control and simplified matrix, which is applied in the output power conversion device, the conversion of AC power input to DC power output, electrical components, etc., can solve the problems of magnetic bias saturation, unstable switching frequency, etc. problem, the effect of improving RMC immunity

Active Publication Date: 2020-04-21
西安奇点能源股份有限公司
View PDF2 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, one of the shortcomings of model predictive control is that the switching frequency is not fixed. Under the control of this strategy, the RMC transformer has the problem of partial magnetic saturation due to random switching frequency.

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
  • Model Predictive Control Method for Reduced Matrix Converter with Magnetic Bias Control
  • Model Predictive Control Method for Reduced Matrix Converter with Magnetic Bias Control
  • Model Predictive Control Method for Reduced Matrix Converter with Magnetic Bias Control

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0078] The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0079] The present invention provides a simplified matrix converter model predictive control method with bias control, using the grid side input voltage ( Figure 4 middle u sa , u sb , u sc ), current ( Figure 4 middle i sa i sb i sc ), RMC rectifier stage input side voltage ( Figure 5 middle u ea , u eb , u ec ), transformer primary and secondary side voltage and current ( Figure 6 middle u dc i dc , u 1 i 1 ), output voltage and current ( Figure 8 middle u 0 i 0 ) and the switch matrix model of the simplified matrix converter, establish the mathematical model of the simplified matrix converter and discretize it, predict the input reactive power and output current according to the established discretized mathematical model, and establish the input reactive power and output current at the next moment The quality functio...

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 simplified matrix converter model prediction control method with magnetic biasing control. An input filter, a simplified matrix converter preceding converter, a transformer,a post-stage controllable rectifier bridge and a load model as bases, an input voltage and an input current of a network side and an input side voltage and an output current of the simplified matrix converter rectifier stage are sampled, a simplified matrix converter system mathematical model is built and discretized, input reactive power and output current errors are used as target functions, anoptimal switching state is found, a magnetic biasing problem of the converter is solved by using a positive and negative pulse alternative distribution mode, and model prediction control of the simplified matrix converter with magnetic biasing suppression is achieved. According to the method provided by the invention, RMC model prediction control is achieved, so that RMC still can acquire controltarget performance and RMC disturbance rejection can be improved even under the condition of power supply and load disturbance, through adjusting a pulse sequence, the magnetic biasing problem of theRMC transformer under model prediction control can be completely eliminated by using an algorithm.

Description

technical field [0001] The invention belongs to the technical field of power electronics, and in particular relates to a model predictive control method for a simplified matrix converter with bias magnetic control. Background technique [0002] Reduced Matrix Converter (Reduced Matrix Converter, RMC) is a new type of power converter, RMC topology such as figure 1 As shown, it is composed of input filter, RMC rectifier stage, high frequency transformer, and controllable rectifier bridge. The RMC rectification stage completes the conversion of the three-phase AC voltage of the power grid to the positive and negative alternating high-frequency pulse voltage, and realizes the three-phase to single-phase AC-AC conversion. rectified to direct current. Compared with the traditional AC / DC-DC / AC-AC / DC three-level converter, RMC saves the intermediate DC / AC link, simplifies the hardware circuit, and improves the conversion efficiency. RMC also has the following performances: 1) 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
Patent Type & Authority Patents(China)
IPC IPC(8): H02M7/797H02M7/219H02J3/26
CPCY02E40/50
Inventor 宋卫章刘江杜晓斌高大庆吴凤军
Owner 西安奇点能源股份有限公司
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