Class B Commutation (Basics, Circuit, Working, Waveform & Modes) Explained in Power Electronics

Class B Commutation or Resonant Pulse Commutation or Current Commutation is explained with the following points:

1. Basics of Class B Commutation
2. Circuit of Class B Commutation
3. Working of Class B Commutation
4. Waveform of Class B Commutation
5. Modes of Class B Commutation
6. SCR turn OFF by Resonant Pulse Commutation

Chapter-wise detailed Syllabus of the Power Electronics Course is as follows:

Power Diode, Power BJT, SCR - Silicon Controlled Rectifier, Dynamic Characteristics of SCR, Gate Characteristics of SCR, SCR Triggering methods, Turn of OFF process of SCR, SCR Protection, Thermal Protection of SCR, Two Transistor Analogy of SCR, SCR Mounting, Resistor Triggering of SCR, RC Triggering of SCR, Methods to improve di/dt ratings of SCR, UJT - Uni Junction Transistor, UJT as Relaxation Oscillator, PUT - Programmable Unijunction Transistor, PUT as Relaxation Oscillator, TRIAC in Power electronics, Modes of TRIAC, DIAC in Power electronics, Comparison of SCR, DIAC and TRIAC, SCS - Silicon Controlled Switch, MCT - MOS Controlled Thyristor, Power MOSFET, Comparison of Power BJT and Power MOSFET, IGBT - Insulated Gate Bipolar Transistor, LASCR - Light Activated SCR, GTO - Gate Turn OFF Thyristor, Series Connection of SCR, Parallel Connection of SCR.

Class A Commutation, Class B Commutation, Class C Commutation, Class D Commutation, Class E Commutation, Class F Commutation.

Basics of Converter, Rectifier and filter, Halfwave controlled rectifier, Single phase full wave controlled rectifier, Fullwave bridge controlled rectifier, Symmetrical Semiconverter, Asymmetrical Semiconverter, Three Phase Half wave rectifier, Three phase half wave controlled rectifier.

Series Inverter, Parallel Inverter, Single Phase Half Bridge Inverter, Signal Phase Full Bridge Inverter, Three Phase Inverter 120 Degree Mode, Three Phase Inverter 180 Degree Mode, PWM Inverter.

Control Strategies of Chopper, Step Up Chopper, Step Down Chopper, Class A Chopper, Class B Chopper, Class C Chopper, Class D Chopper, Class E Chopper, Jones Chopper, Morgan Chopper.

Cycloconverter, Basics of Cycloconverter, Step Up Bridge Cycloconverter, Step Down Bridge Cycloconverter, Step Down Cycloconverter, Step Up Cycloconverter, Three Phase to Single Phase Cycloconverter.

Buck Converter, Boost Converter, Buck Boost Converter, Flyback Converter with discontinuous mode, Flyback Converter with continuous mode, Isolated Forward Converter.

On Line UPS, Off Line UPS, SMPS, Comparison of SMPS with Linear Power Supply, Dielectric Heating, Induction Heating, Battery Charger.

Engineering Funda channel is all about Engineering and Technology. Here this video is a part of Power Electronics.

#Thyristor #Commutation #PowerElectronics @EngineeringFunda

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[AkashVerma-lnml]

Thank u so much sir for this explanation using Animation. You see today due to time boundations none of the faculties of any coaching institute urge to teach us with this right way of teaching power electronics. In the world of money and irrelevant time, here is someone who is really making youth engineers a better knowledgeable ones. 🙏🙏

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[AletiBhaskar-bc]

Tell me sir how the diode will go into reverse bias when capacitor across voltage is reaches to vs

[pranavs]

SCR is unidirectional device... Then how will current flow from cathode to anode?

[ranjeetgod]

Very effective way of teaching and is helping a lot for understanding the concept clearly. Thanks a lot Sir🙏

[ghumakkadengineer]

I am a Hindi medium student...I understand ur all words....Ur explanation is in very easy and understandable language...❤️🙏

[ruutu.]

Ek Guru Bhagwaan ke samaan hota hai 🙏 thank u sir ❤️ Jai Shree Ram

[snehasiri-lw]

Very good explanation sir. No one can explain like u sir. I hope more explanation on various concepts on various engineering subjects. Thanks a lot sir 🙏

[rupadarshisamanta]

extremely amazing explanetion sir. this is far better than our college.🔥🔥🔥🔥

[vishnugupta]

Thanks sir i have so many doubts but after seeing ur video i have no doubt thankyou very much sir☺️😃

[surendrasrikakulapu]

I really admire your teaching skills and trying hard to explain complex things. But in this video I found few misinterpretations.
And at 6:26 TA gate pulse given and at that time also Diode is present in circuit but you have not shown in the diagram. At that point it self heavy positive current goes to main Thyristor cathod and it will be turned off.

and another possible thing is as L and C are series the resonant current will become equal to iT1 and iT1- iTL will goes below iTh. then thyristor will be turned off naturally.

Sorry if am wrong and please correct me.

[besmartknowledgeable]

at 08:08 how the current through SCR will follow as SCR is in reverse bias

[bhavaniravichandran]

U are really a gem💎.. Sir...U saved my exams🙏💥

[nachiketart]

15:00 How the Current will flow through SCR from Cathode to Anode ?

[FREEFIREGAMER-ivdx]

Sir how diode is in reverse bias when capacitence gave polarity + and -

[krishnakiriti]

Could you explain why capacitor changes polarity after some time in auxiliary thyristor ckt

[Bengal_Warrior]

can you explain sir how the current is flowing through the Main Thyristor while it is on reverse

[PreetShahBEE]

thanks a lot for all the videos sir, you helped us a lot

[bygrace]

Your explanation make me very easy to understand...thankyou so much sir 🤗