IGBTs explained and IGBT based heater controller

Just explaining a little about IGBTs because so many people seem confused about them, I know it's not perfect and It could have been alot better but don't criticize me too much, I'm not good infront of cameras

Also a demonstration of my IGBT based heater control, hopefully soon I will be able to use PID control in conjunction with it.

Category:

Science & Technology

Tags:

• IGBT
• PWM
• VFD
• VVVF
• Motor
• Control
• Heater

[high1voltage1rules]

Hey the mate it's blackmesa25. Yeah sorry mate iv had to make another account! As I was getting a lot of bad flagging and comments! So here I am with another one!! Hope it hasn't coursed any problems mate. And will try to bring some great videos.

Take care friend and be safe ;-)

[subcooledheatpump]

@high1voltage1rules Glad you're back. I was watching your videos and one day your channel disappeared. I was wondering what happend. I'll be waiting for some videos form you, if you're still making videos, I'll watch them.

[mrCbeems]

Also, what gate driver are you using? Would an IR2101 gate driver work for this project? Do gate drivers eliminate noise from the pwm? According to the IR2101 datasheet.. its Vs is wired directly to the load and the emitter of one of the IGBT's. how is this possible?

[subcooledheatpump]

@mrCbeems This won't be easy but, here goes. The gate driver for this project is an HCPL-3120 optically isolated gate driver. an IR2101 is a half bridge driver, this circuit is whats called an "IGBT Chopper" it doesn't use the upper element, only the upper diode.So an IR2101 would work but you'd have to disconnect the "High output". As for how the IR2101 works, it uses a "bootstrap circuit" that takes power from the DC bus to charge a capacitor in a pulse this gives power to the high gate driver

[high1voltage1rules]

Subscribed* ;-)

[subcooledheatpump]

@blackmesa25 Well I was thinking about making another video, but you've just sealed the deal, now I'm for sure making another one. I'll be playing with some more interesting electronic toys and I'll try to explain everything a little better in the next video, thanks for watching, I'm glad you are enjoying my videos.

[stridermt2k]

Very cool video!

Definitely forwarded my understanding of IGBTs

Thanks for taking the time to make this video.

[umbuzi]

Your presentation is crap but you have a wonderful gift for teaching. As an instructor and a producer of television based video training material you have what it takes to inspire a learner. Good on ya from Aus!

[subcooledheatpump]

@blackmesa25 The SKM400 is a big IGBT.Driving that from 555 is possible in theory, but the switching frequency would need to be very low (1Khz max) and it would only drive the lower IGBT. What I would do, use a halfbridge driver like SG3525, get two opto isolaters, and two gate drivers like CLA360-ND. Then use two isolated power supplies to power each gate driver. feed the singal from the 3525 to the optical isolaters, then from the isolaters to the gate drivers. Good Luck, Thanks

[mrCbeems]

@subcooledheatpump Thanks.. that was fast. Do you know what gate drivers your modified controller is using for your motor?

[subcooledheatpump]

@mrCbeems There is indeed a schematic of this heat controller, On my channel, watch the video "IGBT PWM controller finished" In the description there is a link at the bottom for a schematic.