Homework 3 is announced.

Homeworks/Homework 3/README.md

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+# EE 464 Homework#3
+
+## Single Phase Inverters
+
+### Deadline: 26/05/2023 23:59
+
+Please check [evaluation.md](evaluation.md) for other details and evaluation criteria about the project. Open a **private repository**, which you will put all your work into. Please add [Ogün](https://github.com/OgunAltun) as a collaborator.
+
+
+**1)** A battery bank with 600V DC ratings is utilized to energize a single phase AC load with 50 Hz, 400 V<sub>rms</sub> requirements.  The battery will be interfaced with the load via a single phase full bridge voltage source inveter. The load is modelled by series connection of 12 Ω and 25 mH.
+
+**a)** Find the amplitude modulation ratio (m<sub>a</sub>) for this operation.
+
+**b)** For each case below, simulate the inverter in Simulink with bipolar PWM method. Find the frequency modulation ratio. Plot the inverter output voltage and current for 2 fundamental cycles. Also plot the FFT of the inverter output voltage and current. Comment on the harmonics you observed and compare the results.
+
+* f<sub>s</sub>=1800 Hz
+* f<sub>s</sub>=780 Hz
+
+**c)** Now change the modulation method to unipolar PWM and simulate the inverter in Simulink for the same cases. Find the frequency modulation ratio. Plot the inverter output voltage and current for 2 fundamental cycles. Also plot the FFT of the inverter output voltage and current. Comment on the harmonics you observed and compare the results.
+
+* f<sub>s</sub>=1800 Hz
+* f<sub>s</sub>=780 Hz
+
+**2)** Assume that nominal battery voltage is decreased to 500V and the load requirements are same.
+
+**a)** Find the amplitude modulation ratio (m<sub>a</sub>) for this operation.
+
+**b)** Simulate this operation in Simulink. Use bipolar PWM method and f<sub>s</sub>=1800 Hz. Plot the inverter output voltage and current for 2 fundamental cycles. Also plot the FFT of the inverter output voltage and current. Comment on the harmonics you observed and compare the results with V<sub>dc</sub>=600V case.
+
+**3)** What is the minimum battery voltage that can provide the output requirements? Simulate the inverter for this operation condition. Plot the inverter output voltage and current for 2 fundamental cycles. Also plot the FFT of the inverter output voltage and current. Comment on the results.
+

Homeworks/Homework 3/Teams.md

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+# Homework 3 Team Members
+
+Random generated teams are announced below. It is your responsibility to find your team member.
+If you can not contact your team member, please let me know as soon as possible. Individual homeworks will not be accepted.
+
+| Team No 	| First Member          	|   Second Member       |
+|---------	|-------------------------	|-----------------
+| 1       	|md shazid hasan	|ahmet can yulaf
+| 2       	|mehmet hakan yel         	|ahmet furkan gursoy
+| 3       	|omer sen            	|basak koca
+| 4       	|mehmet emre dogan            	|isa ersoz
+| 5       	|ekin arda comez            	|isik emir altunkol
+| 6       	|fatih erden           	|yasin enes caliskan
+| 7       	|metehan kucukler           	|ozgur gulsuna
+| 8       	|atilla can aydemir     	|gamze celik
+| 9       	|ahmet bilgin            	|ahmetcan akuz
+| 10       	|selin ezgi ozcan           	|baris ozgorgen
+| 11      	|arda kasim   	|behtan umut mercan
+| 12       	|utku deniz altiok          	|ismail macit
+| 13     	|ozan akturk   	
+
+
+If your name is not listed above, please let me know.

Homeworks/Homework 3/evaluation.md

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+
+## Guideline for Homework #3
+
+Here are the important points for homeworks
+
+- You will complete the project in pairs.
+- You are required to create one Github repo in one of the team member's account. Then please add Ogün (/OgunAltun) as contributor. Each partner is required to contribute to the work.
+- You can use any simulation software you want, but it is advised to use MATLAB Simulink.
+- At the end of the project, you are required to submit a project report (in PDF) to ODTUClass. Both this report and your source files in the GitHub repo will be used for grading.
+- Reports will be checked using Turnitin, and copying will not be tolerated. Even if you find a report, so that you can inspire, you are limiting of what you can learn from this course. Don't fool yourself, and do your projects with your team member only.
+- Late submissions will be available in 1 day after the deadline but the homework will be graded over 85 pts. (-15% reduction for late submissions)
+
+## Evaluation
+
+The project will be evaluated using the following guideline:
+
+**Number of Commits (15%):** The number of edits of your project files as seen from the contributors list. For example, if you start making your project in the last few days, you’ll get no credit. If you start early and continue editing your files, you’ll get full credit. The projects are time consuming, so this is a way to encourage you to start early and work regularly. Note that, each student will be evaluated separately according to personal commit number.
+
+**Report Quality (Pass or Rejection):** Text explaining your design decisions, quality of your figures, citing relevant studies and your conclusion section.
+
+**Technical Level (85%):** The detail level of your simulations and your conclusions.
+
+## Number of Commits:
+
+In this project, the minimum expected number of commits on different days is 2. Each days you made at least one commit is 5 points (saturating at 10 points).  The following rules apply:
+
+- Each student will be evaluated personally. So please make sure each team member contributes.
+
+- Your commit has to be a meaningful, and considerable amount of change has to be made compared to the previous version. For example, just changing a few words in your report is not a meaningful commit.
+
+- Number of days that you committed will be evaluated by common sense. For example, a commit at 23:58 and another commit at 00:02 will still count as one.
+
+- Do not try to find a workaround. Just spend time on your project, and improve your models regularly and it should be fine.
+
+You'll get 5 points from the content of your commit messages. You are supposed to write clear and explanatory commit messages, listing what  specific improvements that you made in that version. Please have a look at the following links:
+
+- [Writing Good Commit Messages](https://vip.wordpress.com/documentation/commit-messages/)
+
+![](https://imgs.xkcd.com/comics/git_commit.png)
+
+## Report Quality:
+
+You report quality will be evaluated using the following criteria:
+
+- The report has a separate title page
+- The report has an introduction section that briefly explains the content and the aims of the report
+- The report organized properly with clear sections and subsections
+- All figures and tables have proper captions
+- Figures are given with white background
+- The graphs have proper axes labels and font size of labels is adequate
+- No grammar/spelling errors and very well-written report (hint: use spell-check)
+- Use *Copy Figure* command of MATLAB instead of screenshot
+- No equations or any comments presented as a photo of written copy
+
+If the report is not qualified well enough, the report will be rejected and students will be asked to resubmit the report in three days. The second submissions or late submissions will be evaluated over 85 pts.
+
+## Technical Level:
+
+Following grades will be applied for the technical parts:
+
+- Q1: 65 pts
+	- a) 5 pts
+	- b) 30 pts
+	- c) 30 pts
+
+- Q2: 20 pts
+	- a) 5 pts
+	- b) 15 pts
+
+- Q3: 15 pts