Unlock instant, AI-driven research and patent intelligence for your innovation.

A Predictive Control Method for Matrix Converter with Active Damping Function

A matrix converter and predictive control technology, applied in the field of matrix converters, can solve the problems of not fully realizing active damping and reducing the suppression effect, and achieve the effect of suppressing LC filter oscillation and improving control accuracy

Active Publication Date: 2018-03-13
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
View PDF3 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, although the existing active damping control method can suppress the oscillation to a certain extent, it has not fully realized the active damping, which reduces the suppression effect.

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
  • A Predictive Control Method for Matrix Converter with Active Damping Function
  • A Predictive Control Method for Matrix Converter with Active Damping Function
  • A Predictive Control Method for Matrix Converter with Active Damping Function

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0035] Embodiments of the present invention will be described in detail below, and the embodiments described below with reference to the accompanying drawings are exemplary, and are only used to explain the present invention, and cannot be construed as limiting the present invention.

[0036] The system control structure proposed by the present invention is as figure 2 As shown, the output current i can be obtained from the figure o and load voltage u L The differential equation for is:

[0037]

[0038]

[0039] The instantaneous apparent power of the load s L The expression is:

[0040]

[0041] Among them, superscript c indicates conjugation; p L and q L are the instantaneous active power and reactive power of the load, respectively. From formula (1) and (2) can get s L The derivative of is:

[0042]

[0043] From formula (3), we can see that the real part and imaginary part of formula (4) are p L and q L The derivative of , then:

[0044]

[0045...

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 matrix converter prediction control method with an active damping function. The method includes: the prediction of the load active power, the reactive power, and the input reactive power and active damping control are realized via the acquisition of output current and voltage, power supply current and voltage, and converter input voltage. According to the method, the on-off state of a switch is selected when the sum of error absolute values (namely the index function) between the power mean value and the given value thereof is minimum, the adjustment of the weight of the index function is not needed, and good input and output current performances can be obtained; active damping control can be accurately realized, an equivalent circuit is controlled according to active damping, and the given values of the input reactive power and the load active power are corrected so that the oscillation of an input LC filter caused by the prediction control technology is suppressed; and the realization of prediction control is simplified, the oscillation at the input side can be effectively suppressed, and safe and stable operation of the system can be guaranteed.

Description

technical field [0001] The invention relates to a matrix converter, in particular to a predictive control method for a matrix converter with an active damping function. The method is also applicable to a traditional matrix converter and belongs to the technical field of matrix converter control. Background technique [0002] Matrix Converter (Matrix Converter, MC) is a direct AC-AC power converter, which has the advantages of sinusoidal input / output, energy can flow in both directions, compact structure without DC energy storage components and high reliability, and is considered as a traditional AC power converter. - A promising alternative to AC converters. The MC topology studied in the present invention is an indirect matrix converter (Indirect Matrix Converter, IMC). A typical IMC application structure is as follows figure 1 As shown, it mainly includes power supply, input side LC filter, converter main circuit, load, feedback detection and control circuit. [0003] C...

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): H02M5/458
CPCH02M5/4585
Inventor 朱奕琦周波雷家兴卞金梁
Owner NANJING UNIV OF AERONAUTICS & ASTRONAUTICS