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Nodal analysis method-based voltage definition branch realization method

A technology of node voltage and node method, applied in electrical digital data processing, instruments, calculations, etc., can solve problems such as branch current representation and node analysis methods that cannot be directly realized

Active Publication Date: 2016-10-05
范圣韬 +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When dealing with voltage-defined current-controlled branches such as resistors with a resistance value of zero, ideal voltage sources, etc., the branch current cannot be expressed as a function of the branch voltage, so it cannot be directly implemented in the nodal analysis method

Method used

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  • Nodal analysis method-based voltage definition branch realization method
  • Nodal analysis method-based voltage definition branch realization method
  • Nodal analysis method-based voltage definition branch realization method

Examples

Experimental program
Comparison scheme
Effect test

example 1

[0026] Example 1, the resistance branch R between (i, j) nodes,

[0027] v i -v j -Ri k =0,C ki = 1, C kj =-1,D kk =-R,E k =0

[0028] Can use figure 1 The circuit to achieve:

example 2

[0029] Example 2, the voltage source E between (i, j) nodes k ,

[0030] v i -v j =f(t),C ki = 1, C kj =-1,D kk =0,E k =f(t)

[0031] Can use figure 2 circuit to achieve.

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Abstract

The invention proposes a nodal analysis method-based voltage definition branch realization method, which can be applied to the fields of electromagnetic transient simulation, computer-aided circuit simulation and the like. A nodal analysis method is often used by an electromagnetic transient simulation program and other programs to establish a system admittance equation, which can directly process a current definition voltage control branch. For a voltage definition current control branch element (such as a resistance element with a resistance value being not zero), a voltage definition current control branch needs to be converted into the current definition voltage control branch to be realized in the nodal analysis method; but for certain voltage definition current control branch elements (such as ideal voltage sources), the voltage definition current control branch elements are difficultly realized in a nodal analysis method-based program because voltage definition current control branches cannot be directly converted into current definition voltage control branches. According to the nodal analysis method-based voltage definition branch realization method, a new node is introduced, a branch current of the voltage definition current control branch element is converted into a voltage of the newly introduced node, and a branch constraint is expressed through a Kirchhoff's current law of the newly introduced node, so that the problem in realization of the voltage definition current control branch element with the program constructed based on the nodal method is solved.

Description

technical field [0001] The invention relates to a method for realizing a voltage-defined current control branch based on a node analysis method, and belongs to the fields of electromagnetic transient simulation of a power system, computer-aided circuit analysis technology, and the like. Background technique [0002] The node analysis method is widely used in electromagnetic transient simulation, computer-aided circuit analysis and other software to systematically establish the mathematical model of the network. The node analysis method takes the node voltage as an unknown variable, and establishes the mathematical model of the network by forming the system admittance equation. It has the characteristics of low order of the mathematical model equation and clear physical concept, so it has been widely used. [0003] The node analysis method requires the branch relationship of components to be expressed in the form of current-defined voltage control. For components such as volt...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/50
Inventor 范圣韬
Owner 范圣韬
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