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Thyristor Circuits Modelling for Fast Simulation of Controlled Rectifiers


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DOI: https://doi.org/10.15866/iremos.v15i4.22120

Abstract


This paper presents the mathematical modeling of thyristor circuits as the core to the development of a JavaScript application to be used as a pedagogical tool for teaching and self-studying of thyristor controlled rectifiers. The adopted methodology is based on the resolution of the Ordinary Differential Equations (ODE) related to a set of selected rectifier topologies. The roots of the ODEs are found in real time by a numerically routine as a function of the source parameters, the load parameters and the thyristor firing angle set by the user. This approach enables the determination of the rectifier operating mode and the representation of the waveforms of the circuit variables. It is possible to simulate all the theoretical possible scenarios since there is no limitation of any kind to the range of variation of the circuit parameters. Since the application is implemented in JavaScript, it is not required any installation and runs in any web browser, either on a PC or on a mobile phone, thus facilitating the autonomous study of students. With the proposed approach, the software is extremely fast where the results are updated almost instantaneously in response to the user’s actions, promoting a deep understanding on how the rectifier control determines the converter operation. The presented features make the developed application unique and innovative when compared to similar applications published in the literature, as well as a very interesting alternative to usual electronic circuit simulators.
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Keywords


Modeling; Thyristors; Simulator; Rectifiers; ODE

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References


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