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Analiza in simulacije vpliva parazitov na preklopno sekvenco močnostnega MOS tranzistorja
ID BOŽIČ, PETER (Author), ID Buermen, Arpad (Mentor) More about this mentor... This link opens in a new window

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Abstract
V magistrskem delu z uporabo programskega orodja Ansys Q3D Extractor® izvedemo ekstrakcijo modela parazitov tiskanega vezja in ga vključimo v električne simulacije z namenom opazovanja njihovega vpliva na preklopno sekvenco močnostnega tranzistorja. Prisotnost parazitov se kaže v prenapetostih na tranzistorju, v povzročanju oscilacij in elektromagnetnih emisijah. Q3D Extractor® na osnovi Maxwellovih enačb numerično izračuna parazite RLGC strukture. Ekstrakcijo opravimo na prototipnem vezju ene fazne veje močnostnega pretvornika električnega pogona. Model parazitov iz Q3D Extractor®-ja pridobimo v obliki nadomestnega podvezja SPICE. Nanj povežemo komponente funkcionalnega vezja in izvedemo simulacije. Z uporabo zunanje mikrokrmilniške razvojne plošče izvedemo sistem za preizkušanje preklopne sekvence na močnostnem tranzistorju pri preklapljanju induktivnega bremena po metodi dvojnega pulza. Primerjani rezultati simulacij in meritev kažejo dobro ujemanje. V programskem okolju Matlab® napišemo program za simulacije prevodnih emisij, s katerimi opazujemo vpliv parazitnih elementov na nivo emisij.

Language:Slovenian
Keywords:Ansys Q3D Extractor®, Ansys SIwave®, ekstrakcija parazitov tiskanega vezja, simulacije SPICE, simulacije prevodnih emisij EMC
Work type:Master's thesis/paper
Organization:FE - Faculty of Electrical Engineering
Year:2019
PID:20.500.12556/RUL-111109 This link opens in a new window
Publication date in RUL:24.09.2019
Views:1037
Downloads:296
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Secondary language

Language:English
Title:Analysis and simulation of the effect of parasitics on the switching sequence of a power MOS transistor
Abstract:
The thesis addresses printed circuit board parasitics extraction with the Ansys Q3D Extractor® software tool and their integration into electrical simulations to examine their influence on the power transistor switching sequence. The presence of parasitics causes overvoltages on the transistor, oscillations, and electromagnetic emissions. Based on Maxwell’s equations the Q3D Extractor® numerically computes the RLGC parameters of the structure. The extraction is based on a prototype circuit board comprising a single branch of the electric motor drive inverter. The Q3D Extractor® extracts the parasitics in the form of a SPICE equivalent subcircuit model. Then we connect the components of the functional circuit to the model and run the simulations of the obtained circuit. Using an external microcontroller development board we implement the system for testing the power transistor switching sequence while driving an inductive load by the double pulse method. The simulation and measurement results match well. In the Matlab® program, the simulation of the electromagnetic conducted emissions is performed to observe the level of emissions caused by the parasitic effects.

Keywords:Ansys Q3D Extractor®, Ansys SIwave®, PCB parasitics extraction, SPICE simulations, simulation of EMC conducted emissions

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