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Power electronic devices and applications, ENM070, MPEPO, VT2008, ENM070

Status: Avslutad
Öppen för svar: 2008-05-13 - 2008-05-20
Antal svar: 28
Procent av deltagarna som svarat: 56%
Kontaktperson: Jörgen Blennow»
Utbildningsprogram som genomför enkäten: Chalmers
Utbildningsprogram studenten tillhör: Elektroteknik 300 hp

Your own effort

1. How many hours per week did you spend on this course?

We mean total time, that is, it comprises the time you spent in class and the time you spent on your own work. Try to estimate the average time over the entire study period.

27 svarande

At most 15 hours/week»3 11%
Around 20 hours/week»5 18%
Around 25 hours/week»8 29%
Around 30 hours/week»6 22%
At least 35 hours/week»5 18%

Genomsnitt: 3.18

- The work load have been very different in different weeks» (Around 25 hours/week)
- lot of time for project» (Around 25 hours/week)

2. How large part of the teaching offered did you attend?

27 svarande

0%»0 0%
25%»2 7%
50%»4 14%
75%»10 37%
100%»11 40%

Genomsnitt: 4.11

- It would have been 100% if I hadn"t had another course colliding.» (75%)
- Had a another course this period and the lectures interferred at some occations.» (75%)

Goals and goal fulfilment

The course syllabus states the course goals in terms of learning outcomes, i.e., knowledge, skills and attitudes to be acquired by the student during the course.

3. How understandable are the course goals?

26 svarande

I have not seen/read the goals»8 30%
The goals are difficult to understand»6 23%
The goals give some guidance, but could be clearer»10 38%
The goals clearly describe what I am supposed to learn»2 7%

Genomsnitt: 2.23

- No clear goals or way to get there.» (I have not seen/read the goals)
- Are there any? The course covers atleast a bit from all around the world, how about narrowing down the field? Or at least clearyfy everything more.» (The goals are difficult to understand)
- confuising to know what is the main parts» (The goals are difficult to understand)

4. Are the goals reasonable considering your background and the number of credits?

Answer this this question and the succeeding one, only if you do know the course goals.

16 svarande

No, the goals are set too low»0 0%
Yes, the goals seem reasonable»14 87%
No, the goals are set too high»2 12%

Genomsnitt: 2.12

- Learn this, learn that? Am i suppose to learn if the teaching varies every week and is not based on privious knowledge?» (No, the goals are set too high)

5. Did the examination assess whether you have reached the goals?

24 svarande

No, not at all»0 0%
To some extent»2 8%
Yes, definitely»0 0%
I don"t know/have not been examined yet»22 91%

Genomsnitt: 3.83

Teaching and course administration

6. To what extent has the lecture been of help for your learning?

27 svarande

Small extent»5 18%
Some extent»18 66%
Large extent»3 11%
Great extent»1 3%

Genomsnitt: 2

- It is very difficult to follow Torbjörn"s lectures, it seems like he is not well prepared and he is jumping back and forth» (Small extent)
- The lectures are badly structured throughout the whole course and there are to many topics on every lecture. The lecturer seem to drift a way at some occations and doesn"t keep the topic.» (Some extent)
- Hard to say since the goals aren"t clear» (Some extent)
- But too fast» (Some extent)
- The lectures are too messy, too much jumping between different parts.» (Some extent)

7. To what extent has the tutorials been of help for your learning?

27 svarande

Small extent»5 18%
Some extent»14 51%
Large extent»7 25%
Great extent»1 3%

Genomsnitt: 2.14

- The correction on the studentportal is much better than the explaination given by Lena» (Small extent)
- Tutors may work systematically, show all steps and explain which was not done...» (Some extent)
- Haven"t felt the connection between the tutorials and the lectures..» (Some extent)
- Lena has done a pretty good job, though I must say that she has to learn more about how to write on the blackboard. Her "*" and "=" signs are sometimes impossible to see.» (Large extent)

8. To what extent has the computer exercises been of help for your learning?

27 svarande

Small extent»8 29%
Some extent»15 55%
Large extent»4 14%
Great extent»0 0%

Genomsnitt: 1.85

- We don not have the time to solve them, and the supervision is almost inexistance » (Small extent)
- The last one were interesting but too big to get in to the schedule to be good in learning point of view.» (Some extent)
- This was better. The project was beyond all work-load. If one was suppose to do everything so that one could understand and get deeper knowledge about things, then this project was a waste of time.» (Some extent)

9. To what extent has the main project been of help for your learning?

27 svarande

Small extent»3 11%
Some extent»8 29%
Large extent»13 48%
Great extent»3 11%

Genomsnitt: 2.59

- i think i got lost in the middle and the guidance was not actually very good..» (Small extent)
- My part to some extend. But if i was to learn anything wider than that, wich the idea probably was, then it was useless.» (Some extent)
- Too much try and see, not enough calculations...» (Large extent)
- Nice to have a big project, and to get marks for it.» (Large extent)
- It"s been fun and intresting to do that part, keep it for next year but please with clearer instructions concerning the report.» (Large extent)

10. To what extent has the the course literature and other material been of help for your learning?

27 svarande

Small extent»2 7%
Some extent»3 11%
Large extent»16 59%
Great extent»6 22%

Genomsnitt: 2.96

- The problem is that the explainations given by the teacher ARE THE SAME THAN IN THE BOOK ... so it is not helpfull.» (Small extent)
- The book mainly. Even though it feels like it skips a lot of details and therefore you don"t always find the answers you should. » (Large extent)
- the book is good..» (Large extent)
- The book is the bible, the lecture material needs more work and specifications.» (Great extent)

11. How did the coordination between lectures-tutorial-computer-exercises-project work ?

26 svarande

Very badly»4 15%
Rather badly»7 26%
Rather well»12 46%
Very well»3 11%

Genomsnitt: 2.53

- Probably the most messy course I"ve ever attend. Better cooperation between all involved people!» (Very badly)
- felt like three different things..» (Very badly)
- I did not take part in them yet» (Rather badly)
- Over and all, the work load was to much.» (Rather badly) (den här kommentaren har blivit redigerad i efterhand)

12. How well did the course administration, web page, handouts etc work?

27 svarande

Very badly»0 0%
Rather badly»3 11%
Rather well»11 40%
Very well»13 48%

Genomsnitt: 3.37

- I would prefer some handouts on the web from the lectures.» (Rather badly)

Study climate

13. How were the opportunities for asking questions and getting help?

27 svarande

Very poor»2 7%
Rather poor»3 11%
Rather good»11 40%
Very good»11 40%
I did not seek help»0 0%

Genomsnitt: 3.14

- It is good if involved personel could prioritize questions from students during the time of the course» (Rather good)
- Lena has been helpful.» (Very good)
- But better answers are to be preffered.» (Very good)

14. How well has cooperation between you and your fellow students worked?

27 svarande

Very poorly»1 3%
Rather poorly»2 7%
Rather well»3 11%
Very well»21 77%
I did not seek cooperation»0 0%

Genomsnitt: 3.62

- Ok with some. But all and all the courss collieded with other courses or personal problems and things which slowed the pace down.» (Rather poorly)

15. How was the course workload?

27 svarande

Too low»0 0%
Low»1 3%
Adequate»11 40%
High»8 29%
Too high»7 25%

Genomsnitt: 3.77

- But far too much material, so it doesn"t mean that I feel that I know much. » (Adequate)
- It was unreasonable load» (Too high)
- Its like we were studying the whole book» (Too high)
- Not clear that the computer excerices wasn"t composedly to do » (Too high)
- Less subjects and the same workload, then we"ll be alright.» (Too high)
- extremly high» (Too high)

16. How was the total workload this study period?

27 svarande

Too low»0 0%
Low»0 0%
Adequate»10 37%
High»10 37%
Too high»7 25%

Genomsnitt: 3.88

- For me personally it was a bit higher since I also took part in an additional 4.5 hec course.» (Adequate)
- Because the course of Power Electronics has very high load» (Too high)
- Project here project there. Computer exercise here, computer exercise there. Lab-report here computer report there. Did you guys ever discuss with one and other, the HVT guys in generally?» (Too high)
- PEDA + High voltage Technology is too much.... exept if we spend days and night to study ... but some of us have a life !!!» (Too high)
- I have been forced to choose, and will do this exam for real in august...» (Too high)

Summarizing questions

17. What is your general impression of the course?

27 svarande

Poor»4 14%
Fair»9 33%
Adequate»3 11%
Good»10 37%
Excellent»1 3%

Genomsnitt: 2.81

- Didn"t live up to the name of the course, not any applications at all.» (Poor)
- No main goal combined with poor lectures and VERY bad tutorials and alot of workload made this otherwise interresting subjects (excuse me) A PAIN IN THE ASS.» (Poor)
- Trying to be positive..» (Fair)
- Confusing, loaded, boring (difficult to study)» (Fair)
- Somehow the lectures are hard to get anything out of. Same with the book. Maybe it´,s me.» (Fair)
- I haven"t learned as much as I"d wanted.» (Adequate)
- The course is good but the lecture material is too much that there is no time to know it well. All that the student can do is swallow without chewing. » (Good)

18. What should definitely be preserved to next year?

- The project and tutorials.»
- guest lectures»
- I think the literature is ok»
- the project work should be expanded further.»
- dc-dc converters, dc-ac, ac-dc protecion of components»
- The project and guest lecturer»
- the project»
- Computer exercise with goals within reason.»
- project (with marks), guest lecture (HVDC)»
- study visit»
- The project. It gives a practical overview of the course and I thinck that it is an important subject. It allows apply the knowlegdes to a good real problem, with a real board. The time for lectures and tutorials is really well distributed.»
- study trip»
- The project, HVDC study visit, computer excercise, free handouts.»

19. What should definitely be changed to next year?

- Lecturing, slide material and less time and focus on the internal behaviour of the semiconductors.»
- A better structure of the course: What to learn and what areas that are the most important to now about.»
- computer exercise»
- 1.The course should be splitted into two courses: a.Power semiconductor device b.Power electronics applications This will be really helpful to grasp the topic 2..The project work should be changed or improved. 3.The assistant contribution must be improved... 4.The lecturer way of teaching was not that useful. 5.Computer excercises were not designed properly »
- the tutorial sessions were not helpful to me. the tutor should be one who can explain more what he/she is doing.they just come and write what they have. if this is the case, then i can simply print them from the homepage, and i usually do that. »
- Project, it doesnt help much to understand the things. We need more help/instruction to understand or to know what and how to deal with the work!»
- More cooperation and education in teaching technology of involved personel, clearer goals of the course, practical applications of the thechnology»
- The content of the course should be revised otherwise its difficult for students to learn. »
- to add more time in power electronics application, especially in home appliance and industry application.»
- No semicondcution part didn"t match with the rest of the course.»
- Lenas tutorials. Like i said nothing personal, but that attitude combined with false calculations and wrong statements made the tutorials very dull and non educational.»
- computer exercise 2 and 3»
- I wouldn"t change anything»
- More serious help on the project.»
- Remove the semiconductor part completely!! The calculation part of it feels really of no use. This is most likely nothing that we will do. Put more focus on FACTS rather. Some of the semiconductor theory is really good to have, but the calculations with regions and such feels really unnecessary.»
- Computer exercices: supervision. Tutorials: supervision... And the contain of the course (speak more about power electronic home/industry applications)» (den här kommentaren har blivit redigerad i efterhand)

20. Your comments on the study visit

- Did not attend. For next year, put the study visit in the first or second week and maybe go to Ringhals instead.»
- VERY BAD that Torbjörn didn"t manage to find a visit that ALL students could attent. Now the number of participants for the visit was "filled" very quick and I couldn"t come along. He would have booked two occations from the start. Now he only emailed us and told us to email him if we where intressted in a 2nd visit. In this case it"s really hard for us to know when it is and to plan our time.»
- I havent participated»
- Not visited yet»
- It brings the theory to reality. Its good»
- it"s very useful to understanding about the theory.»
- Nice but have fitted better in the PSO course. »
- DNA»
- Nice »
- good »
- I did not go»
- Interesting! but Vattenfall should be sending two persons to guide us.»
- Great! Really intresting! Many things from it helped me get a better understanding both from a PEDA but also HV perspective.»

21. What did you think of the guest lectures?

- Missed ABB. The other one about siliconcarbide didn"t give me that much. »
- Bad that the time for one of them where rescheduled so that I couldn"t attend. The one I attended was good and I leared alot.»
- very interesting»
- The ABB lecturusefule on FACTS was good The other two lectures from Volvo and Transic were not that »
- their topics are very interesting.but they must have the capability to explain it. some make it very boring. they must be entertaining.»
- The one from ABB abt HDVC is quite good but the one from TranSic is rather poor!»
- ok»
- Its a good idea because it shows the students that what is learnt in class exists in real life.»
- it"s very useful.»
- Good»
- Good, exactly what we need at the end of our studies.»
- HVDC was good»
- good connection with companies»
- Interesting. It gives an idea about last trends of the course topics in the industry.»
- ok»
- Intresing, all of them, especially the FACTS one, but also TranSiC.»

22. Which part(s) of the course contained to few application examples ?

- The applications part in General»
- chapter 10, the control part is one of the most important ones,yet few was done on it.»
- ups, converters, »
- ac-dc converters, dc -ac ups»
- home application and industry application (manufacture industry) »
- didn"t feel the real application connection at all. Not what the are used for.»
- Maybe the guest tutorials otherwise, none.»
- Almost all »
- dunno»

23. Which part(s) of the course contained to many unnecessary details ?

- semiconductor...»
- Drive ciruits »
- Hard to say, think over this when planning the course and don"t forget to include it in the goals of the course»
- power electronics component.»
- semi conducting part»
- The course itself contained alot of unnecessary details. Narrow it down and concentrate on the important things.»
- Component power part of power electronic.»
- the last part semiconductor »
- the last part , which delt with the physics of the power semiconductors»
- dunno yet»
- Semiconductor part. Can skip the calculations there and focus on other things.»

24. Which part(s) of the course was/were most difficult ?

- All the parts where you didn"t get enough guidance and had to sit in hours to solve a problem.»
- Power semiconductor devices, because it was told in four lectures only.»
- Curve forms... »
- resonance component and power electronics component»
- Nothing special was difficult, just to damn much to do.»
- ZVS/ZCS, design, MOSFET (many things to know)»
- EMI»
- resonant converters»
- Resonant converters.»

25. Which part(s) of the course was/were most interesting ?

- snubber circuits and other areas that you might come in contact with and easily can simulate.»
- HVDC or chapter 18 in general»
- snubber and gate driver circuit and power electronics application»
- the short part about HVDC applications and like that...»
- The guest lecture from TranSiC.»
- snubber, battery applications, and the few examples (would be better to get more)»
- The last part, semiconductor devices»
- hvdc»

26. Which part(s) of the course was/were least interesting?

- semiconductors»
- Power semiconductor devices»
- semiconductor physics»
- power electronics component.»
- semi conduction part»
- The tutorials.»
- Design, ZCS/ZVS»
- resonant converters»
- semiconductors»

27. Additional comments

- The handouts were not as helpful as they use to/should be. Toooo many and without any helping text... The lectures are a bit messy and cover far too much.. Give out more solutions to problems and the right answers to all relevant problems...!! Without at least the right answers no»
- i want to say something on this course. it is very interesting course where i was fond of during my undergraduate studies. but now i fill like am begining to hate it because of some part of the lectures and the tutor,she was not helpful to me. one more thing, the lectures are some times disturbing because the lecturer,sometimes he is in chapter 28 then goes back to 21. the text book is arranged in order that details go further to the end of the book. there are things we have to know in, say chapter 27 before going to chapter 29. so i recommend that lectures be given in line with textbooks.May be the project has made such disorders because it has to begin early.but i think it is not helpful in this way.»
- the course is good»
- The course was too deep. I won"t be a power electric designer.»
- Common guys, you can do alot better.»
- The explaination from the lectures and turoials are the same in the bookand on the handouts, so should we skip them and study onle at home ????? It should not be like that»
- nope»

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