Simulation method of double four-quadrant converter

A four-quadrant converter and converter technology, which is used in the conversion of AC power input to AC power output, instruments, special data processing applications, etc. slow and so on

Inactive Publication Date: 2011-06-01
ZHUZHOU CSR TIMES ELECTRIC CO LTD
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  • Abstract
  • Description
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  • Application Information

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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 of double four-quadrant converter
  • Simulation method of double four-quadrant converter
  • Simulation method of double four-quadrant converter

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Embodiment Construction

[0064] In order to make the above objectives, features and advantages of the present invention more obvious and understandable, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0065] The 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 double four-quadrant converter system, and uses the Simulink model to build and realize the simulation of the mathematical model. Taking into account the convergence in the zero-pulse state, the adms method is used to solve the differential equation of the double four-quadrant converter model. This solution method can effectively solve the divergence problem, and has high stability, high real-time performance, and high accuracy. Features.

[0066] See Figure 4 , Shows ...

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Abstract

The invention relates to a simulation method of a double four-quadrant converter. The double four-quadrant converter comprises a converter and a middle circuit, wherein the converter consists of four parallel branch circuits. The method comprises the following steps of: constructing a corresponding state equation according to different conducting states of switch elements in the four-quadrant converter; constructing a state equation judging module of a simulation model of the double four-quadrant converter by using a Simulink module; constructing an adams resolving module of the simulation model of the double four-quadrant converter by using the Simulink module; and performing simulation calculation by using the double four-quadrant converter. A modeling method has an intuitional principle, simple implementation steps, small real-time calculated amount and more correct and quick simulation, is easy to understand and is beneficial to instantaneity of simulation, and the convergence during zero pulse is effectively ensured.

Description

Technical field [0001] The invention relates to the field of simulation of four-quadrant converters, in particular to a simulation method of a double four-quadrant converter. 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, with the application of computer simulation technology, designers can observe the dynamic and static characteristics of the system during the design stage, seek the optimization of the entire system structure and parameters, reduce costs to the greatest extent, reduce test costs, shorten the development cycle, and improve effectiveness. [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 AC drive electric locomotives. It acts as a rectifier during traction and an inverter during regenerative brakin...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/50H02M5/458
Inventor 应婷王坚谭娟许为沈坤
Owner ZHUZHOU CSR TIMES ELECTRIC CO LTD
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