The aim of this work is to foresee the electromagnetic effects of partial discharges (PDs) in printed circuit boards (PCBs) by modeling all the related components with lumped-circuit elements. Magnetic field computation is the main target among the electromagnetic effects because it enables PD localization with non-intrusive measurements. The model is tested in a simulation environment developed in Matlab/Simulink and Matlab/Simscape that eases the interchangeability of components to observe the behavior of currents, voltages and magnetic field under different configurations. Moreover, the programming environment provides two approaches to cross-check results. The thesis modeled a PCB with the presence of partial discharges localized between traces. All the main elements involved as traces, power cables and termination were modeled electrically and converted into MIMO systems in order to simulate the response against the stimulus of the partial discharge. Traces and power cables were represented as coupled pair of transmission lines made of lumped-parameters circuit elements. Finally, loop currents and magnetic field with their respective power spectral densities were investigated under different configurations of number of elements per transmission line, type of termination and simulation time horizon.
Lo scopo di questo lavoro è prevedere gli effetti elettromagnetici delle scariche parziali (PD) nei circuiti stampati (PCB) modellando tutti i relativi componenti con elementi a circuiti concentrati. Il calcolo del campo magnetico è l'scopo principale tra gli effetti elettromagnetici perché consente la localizzazione della scarica parziale con misurazioni non intrusive. Il modello è testato in un ambiente di simulazione sviluppato in Matlab/Simulink e Matlab/Simscape che facilita l'intercambiabilità dei componenti per osservare il comportamento di correnti, tensioni e campo magnetico in diverse configurazioni. Inoltre, l’ambiente di programmazione prevede due approcci per il controllo incrociato dei risultati. La tesi ha modellato una PCB con la presenza di scariche parziali localizzate tra le tracce. Tutti i principali elementi coinvolti come tracce, cavi di alimentazione e terminazione sono stati modellati elettricamente e convertiti in sistemi MIMO per simulare la risposta allo stimolo della scarica parziale. Tracce e cavi di alimentazione sono stati rappresentati come coppie accoppiate di linee di trasmissione costituite da elementi circuitali a parametri concentrati. Infine, le correnti di anello e il campo magnetico con le rispettive densità spettrali di potenza sono stati studiati in diverse configurazioni di numero di elementi per linea di trasmissione, tipo di terminazione e tempo di simulazione.
Modeling and simulation of partial discharges produced in PCBs
Trujillo Arboleda, Camilo
2022/2023
Abstract
The aim of this work is to foresee the electromagnetic effects of partial discharges (PDs) in printed circuit boards (PCBs) by modeling all the related components with lumped-circuit elements. Magnetic field computation is the main target among the electromagnetic effects because it enables PD localization with non-intrusive measurements. The model is tested in a simulation environment developed in Matlab/Simulink and Matlab/Simscape that eases the interchangeability of components to observe the behavior of currents, voltages and magnetic field under different configurations. Moreover, the programming environment provides two approaches to cross-check results. The thesis modeled a PCB with the presence of partial discharges localized between traces. All the main elements involved as traces, power cables and termination were modeled electrically and converted into MIMO systems in order to simulate the response against the stimulus of the partial discharge. Traces and power cables were represented as coupled pair of transmission lines made of lumped-parameters circuit elements. Finally, loop currents and magnetic field with their respective power spectral densities were investigated under different configurations of number of elements per transmission line, type of termination and simulation time horizon.File | Dimensione | Formato | |
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Executive_summary_Modeling_PDs_MSc_thesis_Camilo_Trujillo_A.pdf
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Modeling_PDs_MSc_thesis_Camilo_Trujillo_A.pdf
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https://hdl.handle.net/10589/215020