EE 5711: Power Electronic and Systems
I. SIMULATION PROJECTS FOR 2025
II. PROJECT OBJECTIVES
• Students should be able to develop the analytical models of Power electronics systems
• Student should be able to carry out simulation/computer-based calculations
• Students should be able to evaluate the analysis and performance
• Student should be able to write a report
III. AREA OF WORK
• To study application of Modelling and Simulation of Power electronic systems
• You can choose any of the 4 areas of applications given below
• You will have to develop a model in Python or Octave or MatLab (m files only. Any Simulink based simulations will not be given any marks)
• Using the model, you will need to carry out performance analysis of the system
• You can carry out incremental changes in the power electronics system models and compare the performance
• As the objective is to learning by doing, you can refer to published work and use that as a basis of your problems
IV. TOPICS TO BE SELECTED FOR THE PROJECT
For projects we will focus on developing averaged small signal models so that we can study stability, control performance in most power converter systems. Another area we will can choose to study is performance of PWM methods. We will not combine both of these as the models become very complicated and will be beyond the scope of this module Broad themes for selection of the project topics is listed below
• DC DC converter system modelling
– Small signal stability analysis of DC - DC system (could be applied to battery charging/Solar PV etc/DC microgrid with 1 source, 1 load and 1 storage)
– Small Signal Control model and analysis (you can select any controller)
– PWM and spectral analysis of DC-DC converter
• DC to AC system
– PWM analysis using FFT using Space vector Modulation or other modulation
– PWM analysis in multilevel inverter
– Averaged Models based control methods and analysis
• AC to DC system
– Averaged model based control for applications like Battery charging, energy storage system
• If you want to do circuit based simulation, you may choose a circuit that you ant to simulate and use open source software like NgSpice or Xpice based Spice OPUS. Alternatively, you can use academic version of PSIM
V. TASKS TO BE DONE AND ASSESSMENT
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Task
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Assessment
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A 6 page report 2 columns,12pt (IEEE Journal Paper format)
Computer based Analysis & simulation (code Python, Octave, MatLab(Octave compatible))
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50%
50%
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Total
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100%
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VI. WHAT SHOULD THE REPORT HAVE?
• The theoretical derivation of the system model
• Flow chart or pseudo-code of Model implementation
• Results
• Analysis and Evaluation
• The Report should be submitted in pdf format....Word doc or any other format may cause loss of equation fonts, hence will not be accepted
VII. HOW TO STRUCTURE AND WRITE THE REPORT?
Even if you are doing a team project, each student will submit an individual report. So are all the reports submitted by the team members same? NO. The how to write the report?
In practice, when engineers work in a team, do they all sit around a table and watch one guy do all the coding? No, if that is the case, why would the company pay the guys sitting and watching? A Team project is usually will have some work distribution. It may not be perfectly equal distribution (which happens only in a math problem on paper). As team members you should try to do a equitable distribution. So do not distribute the work like one does literature research, and other does theoretical derivation and the 3rd does coding. This is not an equitable distribution. A better way to distribute work is:
• Choose a project that has Power Electronic systems (Circuit and Control)
• The problem formulation stage is important. It should be done in a way that all members of the team has a system to work on.
• When you write a report, you will start with the system of system descriptions which will be similar to all (but is not cut-copy-pasted). The student submitting the report then starts with the system the student is responsible for. Hence the report will have the write as the first author and the other team members as co-authors.
• In a well defined project, each student would get a sizeable chunk of work (almost equal) of a subsystem of the Power Electronic system. You can discuss with me if you get stuck at this stage.
• Assessments are individual hence each student submits project folder with report and code.
VIII. WHAT SHOULD THE SIMULATION CONTAIN
• You can either submit a Jupyter notebook with Python code and comments
• Working Octave or Matlab code with results
• You can create a git and share the link for the code.
• You can do the project with no more than 2 persons per group. But each students need to submit one report each
• When submitting your report you mention your name first and your partner’s name as second.
IX. HOW TO CHOOSE A PROJECT?
Scan IEEExplore journals that focus on analysis, modelling and/or control of a power electronic system. Use Google scholar to search wit key words such as Dual Active Bridge or ANPC etc. Then find the paper in IEEEXplore by clicking the Google scholar link. Scan the papers and see which topic appeals to you. Start with the paper and then do you own analysis
• Steady state equivalent circuit and waveform analysis and simulation
• Small signal analysis modelling simulation and control
This is only a guideline, if you have any problem of your own interest, you can take that up. But this scope of EE5711 is not the same as a Thesis project. So be careful in scoping the project
REFERENCES
[1] FFT in python https://docs.scipy.org/doc/scipy/reference/tutorial/fft.html
[2] H. W. van der Broeck, H. -. Skudelny and G. V. Stanke, ”Analysis and realization of a pulsewidth modulator based on voltage space vectors,” in IEEE Transactions on Industry Applications, vol. 24, no. 1, pp. 142-150, Jan.-Feb. 1988, doi: 10.1109/28.87265.
If you gave any questions, please put them on the Module Forum so that all can benefit from the questions and answers.