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Oktober 2016

Dear students,

please log in to Bilda using your KTH account. You should be able to find the web activity in power semiconductor devices there. The name of the activity is EJ2301 Power Electronics HT2016.

You probably have to use the choose event roll-down menu om the left side of the screen to find it.

Have fun!

/Hans-Peter Nee

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Hans-Peter Nee taggade med web activity. 26 oktober 2016

September 2016

Dear students,

please find an updated version of the course description for EJ2301 Power Electronics..

I also wish you welcome to the next lecture tomorrow Monday Sept. 5th at 13:15 in lecture room B23.

Those of you who haven't signed up for a clicker can do that on Tuesday Sept. 6th at 12-13 in room Q26.

/Hans-Peter Nee

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Assistent Hans-Peter Nee skrev inlägget 4 september 2016

September 2015

Dear Students,

please find an updated version of the course program.

Welcome to the lecture this afternoon at 15 in lecture room Q2.

Course program EJ2301 autumn 2015

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Hans-Peter Nee taggade med Updated course program. 4 september 2015

Januari 2015

Here are a few old exams of the old power electronics course (EJ2300). The exam of the new course looks the same, but it does not include resonant converters.

T140107

T131026

T130108

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Jingxin Jin kommenterade 14 januari 2015

Dear professor,

I wonder whether there is a mistake in solutions. For the solution of problem 4, January 2013, shouldn't it be VL(1)=4/pi*Vd instead of VL(1)=0.9*Vd?

Thank you!

Sander Claeys kommenterade 14 januari 2015

4/piVd is the amplitude, whilst you are looking for the RMS value. If you divide it by the root of 2, you get VL=4/pi/sqrt(2)Vd=0.9*Vd.

Jingxin Jin kommenterade 15 januari 2015

That is right. I should have noticed. Thank you!

Bernhard von Mutius kommenterade 15 januari 2015

I have a question concerning problem 4 in the T131026. In the problem description it is stated that we should calculate "the voltage at the motor terminals during the time the dc current is zero."

But I think that the solution calculates the voltage during the time the dc current is not zero, as it is integrated over the interval from alpha to pi+alpha/2. The time period of zero dc current is however alpha/2 to alpha. Or am I wrong?

Dear students, here are the solutions to the peer assessments:

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Lärare Hans-Peter Nee skrev inlägget 14 januari 2015

November 2014

Dear students, the web activity on power semiconductor devices has been activated i BILDA.

Please, check that you can find it (EJ2301 Power Electronics) when you log in to BILDA.

You may have to click on "My events" on the left side of the page to find it.

Browse through the different parts of the work in order to get an overview of the material.

Note, that there are several tests to pass before the whole activity is completed.

Good luck!

/Hans-Peter Nee

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Lärare Hans-Peter Nee skrev inlägget 17 november 2014

September 2014

Dear students,

welcome to the first lecture in Power Electronics EJ 2301 today at 15:15 in lecture room M3.

Please, find the course description here:Course description EJ 2301.

Best regards,

Hans-Peter Nee

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Lärare Hans-Peter Nee skrev inlägget 3 september 2014