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Simulation method for single four-quadrant converter

A four-quadrant converter and converter technology, which is applied in the direction of converting AC power input to AC power output, output power conversion devices, electrical components, etc., can solve the problem of occupying a lot of resources, the converter model is slow, and cannot Convergence and other issues

Active Publication Date: 2011-03-30
ZHUZHOU CSR TIMES ELECTRIC CO LTD
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  • Abstract
  • Description
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Problems solved by technology

The converter model written with S-function is slow in real-time simulation and takes up a lot of resources, especially when the input control pulse signals of the converter are all zero, the simulation data results diverge and cannot converge

Method used

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  • Simulation method for single four-quadrant converter
  • Simulation method for single four-quadrant converter
  • Simulation method for single four-quadrant converter

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Embodiment Construction

[0051] In order to make the above objects, features and advantages of the present invention more comprehensible, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0052] The present invention selects the parameters of the state equation according to the different conduction conditions of the converter switching elements, the positive and negative currents and other access conditions, establishes the mathematical model of the single-weight four-quadrant converter system, and uses the Simulink model to build and realize the simulation of the mathematical model . Considering the convergence of the zero pulse state, the ADMS method is used to solve the differential equation of the single four-quadrant converter model. This solution method can effectively solve the problem of divergence, and has high stability, high real-time performance and high accuracy. specialty.

[0053] see Figure 4 , s...

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Abstract

The invention relates to a simulation method for a single four-quadrant converter, which comprises a converter and an intermediate circuit, wherein the converter consists of four branch circuits which are connected in parallel. The method comprises the following steps of: constructing corresponding state equations according to different conducting states of each switch element in the four-quadrant converter; constructing a state equation judgment module of a simulation model of the single four-quadrant converter by adopting a Simulink module; constructing an adams resolving module of the simulation model of the single four-quadrant converter by adopting the Simulink module; and performing simulation calculation by utilizing the simulation model of the single four-quadrant converter. The modeling method of the invention has visual principle, simple realization step, small real-time calculated amount and accurate and quick simulation, is easy to understand, is favorable for the instantaneity of the simulation, and effectively ensures the convergence during zero pulse.

Description

technical field [0001] The invention relates to the field of single four-quadrant converter simulation, in particular to a single four-quadrant converter simulation method. Background technique [0002] With the rapid development of computer software and hardware technology, computer simulation has been more and more widely used. In the field of power electronics technology, by using computer simulation technology, designers can observe the dynamic and static characteristics of the system at the design stage, seek the optimization of the entire system structure and parameters, reduce costs to the greatest extent, reduce test costs, shorten research and development cycles, and improve efficiency. [0003] AC drive is an important direction for the development of railway traction power in my country. The four-quadrant converter is the power side converter of the AC drive electric locomotive, which acts as a rectifier during traction and as an inverter during regenerative brak...

Claims

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Application Information

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IPC IPC(8): H02M5/458
Inventor 王坚应婷何海兴沈坤张宇
Owner ZHUZHOU CSR TIMES ELECTRIC CO LTD
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