The motor controller power supplies I took these off of was on a bearing roller grinder. The rollers made on that grinder are used in wind turbine shaft bearings. Each roller weighs between 30 to 60 pounds. I also got a bunch of motor braking resistors that came off the same machine. Have to pull one out of the warehouse but I think they are either 2,000 or 2,500 watt resistors. If you want one of them let me know.
couldn't resist! just press attenuate.. a real buzz! yup! agreed! IGBT's are purdy cool! well, except when they'r burnt up! a dip in the pool! good luck mr. fix it ! hand gestures are spot on!
1) 2:48 There's already what appears to be a snubber diode running from emitter to collector. I gather they put some built in protection, but allow you to increase that protection for higher inductive loads? 2) If you search for brake chopper circuit, the transistor actually appears across the DC bus with a brake resistor in parallel with the diode. It doesn't directly drive the motor as per your diagram.
Like you siad, these series of modules from Infineon are meant as brake choppers for traction applications/VFDs and the like, therefore they add the chopper diode internally to the die so you have it as a single package. This is great for cooling and makes a smaller footprint. Big difference between power MOSFETs and IGBTs is the lack of inherent body diode in IGBTs so they also have to be added separately, but they are (almost) always already integrated in IGBT power modules.
0:21 expensive igbt too A dream transistor for a Tesla coil full bridge if you can afford 4 of em They can run higher current too if pulsed via an interrupter circuit With microcontroller you can spit out musical square waves, or even use an 80s soundchip If you got a beefy circuit you can run in continuous wave and play hifi quality audio, plasma speaker has better frequency response, more dynamic range, and is truly omnidirectional
And even run it at 250v mains You can reach close to that 1200v in a Tesla coil primary with inductive spikes after rectification you have about 400 volts or so, and inductive kicks can reach up to 700-800 volts
You could replace the master power switch in the breaker box in your house with that, typical house master breaker is rated about 200 amps 250v Useful if you want to install solar power privately and not back feed it to the power company Add a current sense and esp32 and a voltmeter chip Get the voltage stats, current of every circuit in the house, and when the current sense transformer see a mains power outage switch dat igbt off and switch igbt on for solar And can be operated over Bluetooth on your smartphone And that way the power company can back feed and trickle charge your solar backup, and solar panels only are used when mains don't work, power company ain't going to put solar panels on my house and claim partial ownership of my private property that's how those solar power subsidies technically work They pay for the solar panels, but you don't own it
The power supply might be sweating more than the transistor, unless one reduces the gate voltage. If it is just for the current one could test a power MOSFET like the IRFB3077PBF with 3.3mOhm resistance and 210A continuous current in a TO220AB case (with heat sink). Higher currents for short pulses may be provided with a capacitor bank like when you test the saturation behavior of coils for switching converters.
I wonder if the gates of those monsters is susceptible to static electricity like their smaller MOSFET cousins? Do IGBT's incorporate static protection for the gates?
The motor controller power supplies I took these off of was on a bearing roller grinder. The rollers made on that grinder are used in wind turbine shaft bearings. Each roller weighs between 30 to 60 pounds. I also got a bunch of motor braking resistors that came off the same machine. Have to pull one out of the warehouse but I think they are either 2,000 or 2,500 watt resistors. If you want one of them let me know.
Holy shit, that's one hell of a transistor!
couldn't resist! just press attenuate.. a real buzz! yup! agreed! IGBT's are purdy cool! well, except when they'r burnt up! a dip in the pool! good luck mr. fix it ! hand gestures are spot on!
Part of me says "I want to see the inside" but another part says "Don't destroy this monster."
Once again you've given us a WOW moment!
1) 2:48 There's already what appears to be a snubber diode running from emitter to collector. I gather they put some built in protection, but allow you to increase that protection for higher inductive loads?
2) If you search for brake chopper circuit, the transistor actually appears across the DC bus with a brake resistor in parallel with the diode. It doesn't directly drive the motor as per your diagram.
Like you siad, these series of modules from Infineon are meant as brake choppers for traction applications/VFDs and the like, therefore they add the chopper diode internally to the die so you have it as a single package. This is great for cooling and makes a smaller footprint. Big difference between power MOSFETs and IGBTs is the lack of inherent body diode in IGBTs so they also have to be added separately, but they are (almost) always already integrated in IGBT power modules.
0:21 expensive igbt too
A dream transistor for a Tesla coil full bridge if you can afford 4 of em
They can run higher current too if pulsed via an interrupter circuit
With microcontroller you can spit out musical square waves, or even use an 80s soundchip
If you got a beefy circuit you can run in continuous wave and play hifi quality audio, plasma speaker has better frequency response, more dynamic range, and is truly omnidirectional
And even run it at 250v mains
You can reach close to that 1200v in a Tesla coil primary with inductive spikes after rectification you have about 400 volts or so, and inductive kicks can reach up to 700-800 volts
Open it up!!!
6:25 must be a spectacular failure mode when it blows up
Will it fail open circuit or dead short @ 200 amps
You could replace the master power switch in the breaker box in your house with that, typical house master breaker is rated about 200 amps 250v
Useful if you want to install solar power privately and not back feed it to the power company
Add a current sense and esp32 and a voltmeter chip
Get the voltage stats, current of every circuit in the house, and when the current sense transformer see a mains power outage switch dat igbt off and switch igbt on for solar
And can be operated over Bluetooth on your smartphone
And that way the power company can back feed and trickle charge your solar backup, and solar panels only are used when mains don't work, power company ain't going to put solar panels on my house and claim partial ownership of my private property that's how those solar power subsidies technically work
They pay for the solar panels, but you don't own it
We need a bigger breadboard :-)
I used to use these 20+ years ago with magnetic pulse compression to drive copper vapour lasers. the alernative was to use a thyratron.
$117 on Mouser, less than I expected.
The power supply might be sweating more than the transistor, unless one reduces the gate voltage.
If it is just for the current one could test a power MOSFET like the IRFB3077PBF with 3.3mOhm resistance and 210A continuous current in a TO220AB case (with heat sink).
Higher currents for short pulses may be provided with a capacitor bank like when you test the saturation behavior of coils for switching converters.
mmm... you could drive some hellish big loud speakers with a pair of those!
I wonder if the gates of those monsters is susceptible to static electricity like their smaller MOSFET cousins? Do IGBT's incorporate static protection for the gates?
Pretty neat. I learned a lot today.