Lecture 1: Introduction to Power Electronics

MIT 6.622 Power Electronics, Spring 2023
Instructor: David Perreault

The primary function of power electronic circuits is the processing and control of electrical energy. This class discusses the history, evolution, needs, and goals of power electronics.

License: Creative Commons BY-NC-SA

[mitocw]

MIT 6.622 Power Electronics, Spring 2023
Instructor: David Perreault


The primary function of power electronic circuits is the processing and control of electrical energy. This class discusses the history, evolution, needs, and goals of power electronics.

License: Creative Commons BY-NC-SA

[opiwahn]

It's really remarkble these days, when you are able to watch first class educational lessons done by an MIT professor for free. Thank you very much for sharing this content!

[MrSomethingdark]

Whoever made the move to publish this deserves a Nobel peace and environment prize. This is what humanity should feel like. Free!

[Martin-yfzk]

Am I dreaming?!! A 'FREE' electronics course from MIT! I swear this is what I call a miracle! There truly wonderful humans in this world. Thank you to whoever determined that this a great idea! Share the wealth of knowledge

[VedanshSrivastava-zies]

00:14 Course logistics and assessment details
02:43 Homeworks and assessments have different collaboration policies
07:31 Power Electronics focuses on efficient electric power conversion and conditioning
09:45 Power electronics play a crucial role in a wide range of energy conversion systems.
14:20 Power electronics are essential for efficient and reliable energy usage from various sources.
16:47 Power electronics involves storing, transforming, and controlling energy for various applications.
20:50 Power electronics involves transforming DC voltage to other DC or AC voltages for various applications.
23:11 Using transistors to create a variable resistor for voltage division.
27:47 Efficiency is key in power electronics design
30:00 Introduction to Switching Function in Power Electronics
35:02 Filter blocks AC component and allows DC component to pass through
37:21 Ideal switches and LC filters are lossless elements in power electronics.
41:49 Introduction to switching power converters and the core of Power Electronics.

[pipejaimes]

Praise to the camera operator for perfectly capturing the stage, chalkboard drawings, and making smooth and controlled movements while keeping the professor in focus.

[reggiemustard]

I graduated electrical engineering a few years ago up in Canada. While I don't do any proper electrical engineering anymore, its always interesting to go back and watch these lectures to get a refresher, and to see how it's taught at a great school like MIT

[shahidnasir]

🎯 Key points for quick navigation:

00:00 *📅 The course schedule and homework guidelines are detailed. Homeworks are due weekly, collaborations are encouraged but each student must submit their own solutions.*
02:22 *📚 Assessments are weekly take-home quizzes starting March 1, with strict no-collaboration policies.*
04:43 *🔍 Grading breakdown: 40% for homeworks, 50% for assessments, and 10% for a final project synthesizing course knowledge.*
07:02 *🌍 Power electronics are crucial in modern energy applications from milliwatts in portable devices to gigawatts in grid-scale applications.*
09:24 *💡 Historical and current applications of power electronics span from consumer electronics to advanced scientific and industrial systems.*
13:15 *🚗 Power electronics play a vital role in electric and hybrid vehicles, significantly impacting efficiency and performance.*
15:12 *⚡️ Renewable energy systems heavily rely on power electronics for efficient energy conversion and management.*
17:06 *📏 Power converters consist of energy storage elements, semiconductor switches, control circuitry, and filters to manage energy flow effectively.*
21:51 *🎓 The course aims to equip students with the skills to design power electronics for various real-world applications.*
25:39 *📉 Efficiency is crucial in power electronics; it's defined as output power divided by input power.*
28:30 *🔄 Linear power supplies, while simple, suffer from low efficiency due to energy wastage.*
30:24 *⚡ Pulse Width Modulation (PWM) adjusts average voltage by varying switch timing.*
34:32 *🛠️ Filters like LC filters help convert pulsating DC to smoother DC outputs in PWM systems.*
36:23 *💡 Switches and filters in ideal conditions can achieve near 100% efficiency in voltage conversion.*

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[walter]

First time at this channel and the prof is amazing. I am a retired high school teacher whose specialty was digital electronics. I always tried to get concepts across to my students using simple language then explaining what the industry terminology is, and using analogies. The students who excelled at math excelled in my programme.

[JaluelAchak-kezj]

Whoever published this deserves more than appreciation. Thank you so much sir I'm almost to go to the exams exactly on 20s of January and I was so worry about this course

[danpedersen]

This is great! I've been messing around with electronic circuits on a hobby basis for years, born in 69, I knew stuff !!! and learned stuff too. Not the last lecture for me, love it !

[satishyerra]

About electronics ohm's law v=ir is enough for working of a electronic device, capacitor is used to store energy microcontroller measure the current in energy store device like capacitor for wifi we can use alternating current like inverter circuit or reverse diode which is my technology and bluetooth is also same the emitting current curve is different for camera sensor we use a transparent plastic paper and red green blue with two green and red and blue after that when the light falls on that light diode detects it and then we program software accordingly and then we have image

[realestalex]

All of this knowledge for free.Little nuggets like this is what keeps my faith in humanity going

[edenglish]

Estas faixas de áudio são uma benção de verdade para a humanidade! viu!🙌🏼🙌🏼🙌🏼

[DannyWilliamH]

I'm an amateur electronics enthusiast (mostly repair, some design/engineering) and this is amazing. I definitely never went to MIT or warranted the ability to based on my academic performance on high school (lol). Thank you for these.

This professor is very good at his job, btw. I'm about to binge all of these videos and then probably repeat them.

[josepha]

Watched out of curiosity and glad I did. I studied electronics in high school 1972-1976. We were still learning vacuum tubes first, then transistors. Integrated circuits of course existed but were not yet part of the curriculum. To this day I still remember Ohm's law, RC filters and the formula for calculating impedance. Hats off to this instructor, very straightforward and knowledgeable.

[a_bar]

The best educational institution in the world, and it still uses the old method of education...truly education is based on desire and love of knowledge.

[PeteLehmann]

This is friggin AWESOME! Thank you, MIT, for being willing to offer this incredible opportunity to those without the means or opportunity to attend your campus!

[MohammadrezaParsa-kp]

Thank you, MIT.
I am incredibly grateful for the tremendous effort to make high-quality education accessible to people all around the world! 🌍

At the end, I have a small request. I believe it would be fantastic if you could share the video lectures of the 6.011 (signals, systems & inference) class.

[tekvax]

This instructor is an excellent teacher.