Modeling and numerical methods for power electronic devices

A scalable I-V model for latch-up in non-collinear PNPN devices is adapted from a previous model for collinear SCR devices. The model is applied to 14-nm FinFET test structures. Layout scaling trends for key latch-up metrics, such as holding and trigger voltage, are captured by the model in circuit simulation. TCAD simulation is used to gain physical insight into the behavior of non-collinear PNPN devices. The dynamic behavior of switched-mode power supplies is simulated by adopting a state-space representation. Piecewise linear models are used to represent the nonlinear switching devices within the power supplies. With state-space representation models, averaging techniques can be used to speed up simulation time. A reduced-order averaged model is used to predict the dynamic turn-on behavior of a flyback converter. A correction factor is added to the model to account for the effect of the snubber circuit. An Elementary Effects algorithm and a Bayesian inference routine are used to fit the averaged model to a more expensive netlist model. State-space models can also be used with the sampled-data method for state vector simulation. This approach is more accurate than the averaged model, but more computationally expensive. Computation time is reduced by calculating the matrix exponential using a decomposition method. With an efficient means of computing the matrix exponential, switching instances are updated reliably from previous computed values, providing a very quick means for event-detection state vector simulation.

Name thesis:degree_name

Ph.D.

Level thesis:degree_level

Dissertation

Discipline thesis:degree_discipline

Electrical & Computer Engr

Grantor

University of Illinois at Urbana-Champaign

Year dc:date

2019

Author dc:creator

• Reiman, Chloe Michelle

Contributors dc:contributor

• Rosenbaum, Elyse
• Krein, Philip
• Hanumolu, Pavan
• Banerjee, Arijit

• silicon controlled rectifier
• SCR
• PNPN
• latch-up
• 14-nm
• switched-mode power supply
• SMPS
• flyback
• boost
• state vector simulation
• event detection

Statement dc:rights

• Copyright 2019 Chloe Reiman

Language dc:language

eng

Handle dc:identifier

http://hdl.handle.net/2142/105674

OAI identifier oai:identifier

oai:www.ideals.illinois.edu:2142/105674