Discrete State-space simulation of a Three-Phase Diode Rectifier Input

Baines, J; Cade, M; Deng, X; Mecrow, BC

doi:10.1049/icp.2024.2200

Discrete State-space simulation of a Three-Phase Diode Rectifier Input

Lookup NU author(s): Jack Baines, Dr Mike Cade, Dr Xu Deng ORCiD, Professor Barrie Mecrow

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Abstract

© The Institution of Engineering & Technology 2024.In industry there are countless numbers of modelling software packages designed to achieve tasks relating to design of all aspects of engineering. Despite this the end user of the product may not necessarily have access to such software or the expertise to use it or interpret the results. The rectifier at the input to industrial equipment is non-linear, and so the input currents and their effect on the supply at the point of common connection cannot be calculated using a closed-form solution. This paper details the use of discrete state-space modelling to simulate the front end of an electric drive and how it interacts with the grid. This data can be used to estimate impact on harmonic content of the input current waveforms and determine whether certain choices will conform to standards. Since this is uses fundamental circuit analysis it does not require additional toolboxes or libraries and could be embedded into a software application and given to customers. The model produces practically identical results to the Simscape electrical toolbox.