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

Three-phase Vienna rectifier-based dead-beat forecast direct power control method

A power control and rectifier technology, which is applied in the conversion of AC power input to DC power output, output power conversion devices, and AC networks to reduce harmonics/ripples, etc. waves etc.

Active Publication Date: 2017-11-03
河南纽瑞电气科技有限公司
View PDF4 Cites 23 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The technical effect of this invention relates to improving efficiency by eliminating all power device's energy loss when they switch on or off.

Problems solved by technology

In this patented technical problem addressed in this patents relating to improving the power supply system's characteristics without causing any negative effects like increased electrical stresses caused by noise sources and reduced energy transfer capacity due to improved linearity and impedance properties. There were various ways to achieve these goals through different techniques including design principles, control strategies, and analysis tools.

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
  • Three-phase Vienna rectifier-based dead-beat forecast direct power control method
  • Three-phase Vienna rectifier-based dead-beat forecast direct power control method
  • Three-phase Vienna rectifier-based dead-beat forecast direct power control method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0137] The present invention will be described in further detail below in conjunction with the embodiments and accompanying drawings, but the embodiments of the present invention are not limited thereto.

[0138] figure 1 It is a flow chart of the control strategy of the three-phase Vienna rectifier.

[0139] Step 1: Establish the mathematical model of the three-phase Vienna rectifier in the αβ coordinate system based on Kirchhoff's law and coordinate transformation technology.

[0140] Step 2: Measure the input current i on the AC side through the ammeter and voltmeter x(x＝a、b、c) , three-phase grid voltage e x(x＝a、b、c) and DC side upper and lower capacitor voltage V C1 , V C2 , load voltage V dc .

[0141] Step 3: Transform the AC side grid voltage and inductor current in the abc coordinate system measured in step 2 to obtain e in the αβ coordinate system α 、e β i α i β .

[0142] Step 4: On the basis of the principle of instantaneous active a...

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

A three-phase Vienna rectifier-based dead-beat forecast direct power control method comprises the steps of firstly, building a mathematical model under a two-phase static Alpha-Beta coordinate system according to a working principle of a Vienna rectifier and a coordinate conversion technology; secondly, deducting a dead-beat forecast direct power model in detail on the basis of an instantaneous active power and reactive power principle of a three-phase circuit, estimating an active power at a (k+2)th moment by combining a Lagrange linear interpolation method, and calculating a control voltage vector under the Alpha-Beta coordinate system; and finally, controlling a rectifier switch device by employing space vector width modulation (SVPWM) having an embedded medium point voltage balancing function. By the control method, an error brought by control delay is eliminated to a great extent, the influence of the control delay on power control is improved, the harmonic distortion of an input current is effectively reduced, and the current distortion is eliminated.

Description

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

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
Owner 河南纽瑞电气科技有限公司
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