User yogece | chat.stackexchange.com

yogece

Sep 16, 2019 04:34

@jippie how are you?

yogece

Sep 16, 2019 04:33

@W5VO okay

yogece

Sep 14, 2019 05:59

1

Q: Is it possible to make an IGBT to work at duty cycles up to 100%?

I am designing an IGBT based chopper with single Low side switching IGBT (chosen low side switching because ease of driving the IGBT.) There are plenty of resources available for SMPS (buck, boost, buck-boost,) PFC chopper, inverters, welding power sources, UPS and motor control applications. ...

yogece

Sep 14, 2019 05:59

@JonRB Any suggestions?

yogece

Sep 14, 2019 05:50

0

Q: IGBT contactor design

I found this circuit in an older post. I was thinking about using this in place of a contactor to break under load. The load would be at 500V 300A DC. There would be overcurrent protection in line with this. I do realize that this would be less efficient than a contactor and maybe more expensive....

switches relay dc igbt contactor

yogece

Sep 14, 2019 03:51

bye for now....

yogece

Sep 14, 2019 03:48

:) if you write any blog or articles can you share me the link

yogece

Sep 14, 2019 03:46

i am from india and i am a member of few whatsapp & telegram technical groups but most of the time people don't help each other.

yogece

Sep 14, 2019 03:44

@Marla Thank you so much indeed for your help. And one thing pestering in my mind for long time "Why do people help the unknown persons without expecting anything from them "

yogece

Sep 14, 2019 03:37

I dont know about the Semikron Semisel simulator. NIST documents talk only about "Saber" simulator

yogece

Sep 14, 2019 03:36

this is the reason for having good hope with simulation tools. Many manufacturers use PLECS based simulator. Infineon uses PLECS online simulator

yogece

Sep 14, 2019 03:33

and one more thing i came to know the manufacturers of IGBT use simulation software's to generate various characteristic graphs of IGBT that means they won't even check every parameters in real time. I got this information from "NIST manual about IGBT model" i have that document with me

yogece

Sep 14, 2019 03:24

i have already sacrificed some IGBTs and learnt few lessons. now i thought of going in a different route that's why i am looking for Simulation versus Real correlation

yogece

Sep 14, 2019 03:19

i am wondering i couldn't find a single resource about IGBT based chopper for DC motor control because there they would be talking about the Duty cycle Vs Temperature and other details

yogece

Sep 14, 2019 03:18

how far the simulation(Thermal and electrical) correlates with the bench setup. i have seen some papers they have mentioned +/- 30% but in that paper they haven't shown the setup and simulation details much

yogece

Sep 14, 2019 03:15

@Marla Thanks for the immediate reply.Your experience is my age:)

yogece

Sep 14, 2019 02:44

5) which topology used? single switch?(high or low side switch?) half bridge or full bridge?

yogece

Sep 14, 2019 02:39

4) How much was Ta?

yogece

Sep 14, 2019 02:39

3)How much was the initial Tc and steady state Tc?

yogece

Sep 14, 2019 02:37

2)How long the device kept @100% duty?

yogece

Sep 14, 2019 02:36

1)How much current flowing through the device and What is the type of Load?

yogece

Sep 14, 2019 02:35

@Marla i understood we can use IGBT in continuous conduction mode at that time Tj &Tc and Vce & Ic are the limiting factors. since you have used the Semikron device @100 duty cycle i have few questions to ask you

yogece

Sep 13, 2019 20:54

@C.Lange Thanks for your inputs. Let me try in the bench setup. If you have some resources regarding DC operation of IGBT kindly share with me

yogece

Sep 13, 2019 20:18

Icrm is 600A

yogece

Sep 13, 2019 20:17

@C.Lange I am having semikron SKM400GB125D its a half bridge module rated 1200V/400A i understood that but that current maynot be achievable in the ambient temperature of 40 deg celcius

yogece

Sep 13, 2019 20:17

Isn't it?

yogece

Sep 13, 2019 20:02

Close to 100 % above 95% is okay for me.but i am looking for some credible reference.

yogece

Sep 13, 2019 19:04

No pulse current rating isnt available for IGBT module

yogece

Sep 13, 2019 18:57

@C.Lange Yes. But it is limited by pulse width and junction temperature

yogece

Sep 13, 2019 18:01

and i couldn't find information regarding correlation of simulation and bench setup

yogece

Sep 13, 2019 18:00

I am not asking for the design help. Just looking for some credible resources regarding near DC IGBT working. I know the junction temperature is the limiting factor for the IGBT i have simulated the design in Semikrons is online simulator.

yogece

Sep 13, 2019 17:56

i am looking for some research publications/articles/video regarding the IGBT for near DC operation. For inverters and motor drive design considerations available from IRF(Now Infineon) irf.com/technical-info/appnotes/an-1202.pdf similarly i am looking for DC chopper

yogece

Sep 13, 2019 17:51

@W5VO thanks for responding

yogece

Sep 13, 2019 02:17

@W5VO i expect some forums specialized for power electronics. Most of the manufacturers of IGBT power modules dont have forum. Infineon having forum but that is not active like TI forum(Many employees of TI members of the forum)

yogece

Sep 13, 2019 02:15

@W5VO i don't even require it to be 100% above 95% also sufficient for me. any pointers regarding this? I am expecting some reference design,application notes or some technical articles about the IGBT operation in the duty cycle range above 95%

yogece

Sep 12, 2019 09:37

can anyone help me with this?

yogece

Sep 12, 2019 09:37

1

Q: Is it possible to make an IGBT to work at duty cycles up to 100%?

I am designing an IGBT based chopper with single Low side switching IGBT (chosen low side switching because ease of driving the IGBT.) There are plenty of resources available for SMPS (buck, boost, buck-boost,) PFC chopper, inverters, welding power sources, UPS and motor control applications. ...

power-electronics igbt powermosfet

yogece

Mar 16, 2019 15:55

Hi all i'm looking for reference design/Application notes/circuit diagram/ SCR triggering using Pulse transformer. I searched in google and in many forums i couldn't get a good resource to know about it. can anyone help me

yogece

Sep 30, 2018 02:11

@TonyEErocketscientist if do so please let me know. Thanks

yogece

Sep 30, 2018 02:10

hi @TonyEErocketscientist you have given answers to EMI/EMC related issues it would be helpful for us if you share your EMI/EMC experience by writing a blog post.

yogece

May 1, 2018 12:23

can i discuss about that question here? in the chat room with that person?

yogece

May 1, 2018 12:22

0

Q: Arduino and phone communication

i just want to ask you if i connect my phone to an internet connection and my arduino too how can i make them communicate with each other if my phone is more than 10km away from my arduino with a different internet connection? But i want to accomplish this without me buying a website and making a...

arduino communication ethernet

yogece

Feb 7, 2016 13:53

i would like to a simple mechanism for a smart lock (dead bolt type) any reference on where to get started?

yogece

Feb 7, 2016 13:51

hi all

yogece

Jun 24, 2015 04:28

hi all

yogece

Jun 9, 2015 20:13

@PlasmaHH oh sorry i thought PCB prototyping. but you are asking about general purpose (proto) PCB board

yogece

Jun 9, 2015 20:09

@PlasmaHH are you designing multilayer board?

yogece

Jun 9, 2015 19:57

interface:any

yogece

Jun 9, 2015 19:57

range max:50kg

yogece

Jun 9, 2015 19:56

accuracy +- 100gm

yogece

Electrical Engineering