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Research and Implementation of the method of computer-aided analysis of power electronic devices

Author: MaJian
Tutor: HuangJin
School: Zhejiang University
Course: Motor and electrical
Keywords: Power electronic devices Simulation Device Model Petrie network Phase analysis Module
CLC: TM769
Type: Master's thesis
Year: 2006
Downloads: 241
Quote: 1
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Abstract


With the rapid development and application of power electronics technology, computer simulation of power electronic circuit analysis and research has been increasingly widespread attention. Although some simulation software has powerful features, you can use them to complete some analysis of some of the power electronic devices such software, but due to the limitations of the device model and the complexity of the load of the power electronic devices, and can not complete our all analysis requirements for power electronic devices to be carried out, especially when it is used for simulation of power electronic devices malfunction run. In response to these problems, the paper on the basis of the research device modeling and device simulation method, the use of C language developed a specialized program for simulation analysis of power electronic devices. The the topic First for modeling a variety of power electronic devices. Circuit theory and modeling methods known to seize the main characteristics of the specific power electronic devices to build the circuit and logic simulation model based on in-depth study of the various components characteristics. Since this thesis is the study of the characteristics of the power electronic devices as a whole, so the modeling process in the circuit model of the device using high level of the circuit model, i.e. ideal switch model and bipolar resistor model. The logical model of the device is achieved by Petrie network, according to the purpose of the simulation can establish different degrees of fine logic model. Taken the logical model of the device modeling process step-by-step refinement of the principles of object-oriented programming in a top-down, stepwise refinement of thinking coincide, so the simulation program using C language created device model will be described. Complexity for the nonlinearity of the power electronic devices, pathological characteristics and its load, the idea of ??using phase simulation program design. Determining the overall structure of the simulation program, and achieve a modular design of the program. The state change detection using a common module and compatibility detection module to determine the precise moment of the change of the circuit configuration in the program, they are independent of a specific circuit structure. The equation of state module and the output equation module associated with a specific circuit configuration, but can also be designed as a module in the form of, for different circuit structure only change module for a description of the state equation and output equation. Given the importance of the numerical method for the simulation results, this paper discusses the characteristics and scope of application of several numerical integration methods and procedures used to write several commonly used algorithms for the user to select. Wagner chopper, three-phase full-controlled rectifier bridge and three-phase half-controlled rectifier bridge simulation simulation program correctness and practicality.

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CLC: > Industrial Technology > Electrotechnical > Transmission and distribution engineering, power network and power system > Power system automation > Computer application in power system
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