Mod-01 Lec-03 DC -- AC converters

[@debarupasom5068]

don't get why we need the antiparallel diodes when switches on the other side can change the current flow direction

[@seph124]

good lecture. it will be great if you can filter the noise

[@hirenpatel4992]

Thank you somuch Narayanan sir....... I am totally unaware about power electronics... But after watching this video, its totally clear about the concept .... Nice informative and clear in depth ..

[@kevinolivares8793]

Hello, Great lecture! Thanks for sharing! I have a question regarding common ground. I'm rectifying 110VAC and then inverting it using 4 IGBT and 2 IR2101 MOSFET Drivers. I'm also using an Arduino Micro to control the frequency. Should I connect the ground of the rectified 110V to the ground of the Arduino and Drivers power source?

[@kiizabrenda6460]

Hello, can I get a video for the ac to dc conveter

[@mohammedshihab3489]

this the best lectures among all on youtube

[@chandrashekhardasari1345]

My life changing lecture

[@meenaparathodiyil9180]

Very informative and clear .Thank you Sir

[@cut3Shahzad]

Excellent Explanation.

[@madhumatinarule4489]

Subtitles that u have added interrupt all the time while understanding the figure please don't keep it otherwise keep it such that we could see the figure

[@anilraghu8687]

Press c

[@kiizabrenda6460]

Hello, can I get a video for the ac to dc conveter

[@debarupasom5068]

why do we need bidirectional switch?

[@idiragouni5520]

Thank you professor for this excellent explanation of the power part. But how can we control the gates of IGBT or Mosfets with wired logic? My problem is that I don't know what is the reference potential to choose for this logic since we have to apply to the gate of each transistor a voltage of 5Volts or more. If we take as reference -Vdc it is easy to control the gates of the IGBTs connected to -Vc, but how to proceed for those connected to +Vc? Thank you in advance for a possible clarification.

[@sanatghosh9278]

Thank you sir. It is worth attending.

[@AbhijithCRX]

Good!

[@infinity0411]

thank you sir for your lecture and thank you NPTEL

[@nagsaida5542]

Nice, good clarity given by Ur lecture thank you sir

[@peninnahakumute5356]

It's really a wonderful lecture. Thank you Sir

[@powerelectronicsbyprof.jbj9245]

Nice video

[@GiridharRajuNM]

Insightful lecture Dr. Narayanan, Thanks. Looking forward for more practical implementation examples, for example, the waveform is always square in this circuit how do you get a sinusoidal waveform? Thanks a lot anyways.

[@TheKarn07]

+Giridhar Raju N M He mentioned that in order to get a smoother curve with less ripples, the Pulse Width of the multiple notches should be varied that will result in a more sinusoidal kind of a waveform. Also, the voltage level can be modified using the same. This method is also more widely known as the Pulse Width Modulation (PWM) Technique. Hope this helps!

[@GiridharRajuNM]

Thanks karan, That helps.

[@avijitmanna1286]

Nice lectures sir

[@manishpatil9952]

always Best !! Thanks Professor!

[@tanoysen3534]

i have enjoyed mostly sir

[@nosaltiesandrooshere7488]

👍

[@chayakumar1210]

Why capacitor is connected across the load?

[@TonySingh7]

To reduce voltage ripples, a large cap will provide an almost constant voltage to the load which is preferred.

[@vivekartist6893]

To make the output smoother.

[@achalbhoir1359]

From 46:23 it's totally nonsense 😂 I have never seen IGBT with diode in series instead of antiparallel.... Don't get offended.... I already working with 3 phase IGBT BASED BOOST RECTIFIERS AND INVERTERS , AND GOD KNOW WHEN WE WILL ABLE TO BRING TECHNOLOGY TO SOCIETY USING THIS TYPE OF TEACHING SCHEMES IN ENGINEERING COLLEGES

[@sudershandolli10]

The thought (bring technology to society) u have is grt... U can take initiative to share your knowledge to the students ..

[@X-Jack231]

Poor Person with little knowledge claiming to be converter designer is judging professors of IISc 😆😆😆

[@roshanmujeeb]

This is current source inverter. You are saying it for voltage source inverter where the anti parallel diode is used.

[@sri279]

Thank you .... sir...for given this lecture