need some help with igbt drivers please

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drspastic
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need some help with igbt drivers please

Post by drspastic » Tue, 07 Jun 2016, 01:38

hi, this is a bit off topic because i am building a pump drive for the smallholding but after trying the electronics forums to no practical use, i noticed you guys on this forum are legends in designing your own igbt drives.

cost is an issue and i believe i have most of the parts i need. there are 2 half bridge 600v 100a igbt bricks. there are 4 m57959l hybrid drivers, a pic micro making 50hz spwm and an inverted output.

im pretty experienced in electronics but this is my first time with igbt or high power. i know the drivers will need isolated psu but i need more info on exactly what i can get away with.

of course, its urgent now because my chinese 1500w blew smoke yesterday and now i have no irrigation. opening it revealed 3 caps blown off the pcb and the display pcb regulator a charred mess. also note the pcb said 1000w!

this will all be good practice as i have 3 more even bigger igbt bricks and a saab 9-5 aero with a main bearing crunched just gasping for a 3 phase motor!

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Richo
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need some help with igbt drivers please

Post by Richo » Tue, 07 Jun 2016, 21:46

Recom make dedicated IGBT driver DC/DC's.
The price difference isn't enough to worry about using the 1W.
Try something like RKZ-051509D
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drspastic
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need some help with igbt drivers please

Post by drspastic » Tue, 07 Jun 2016, 23:26

thanks but drat! i just ordered these last night before i saw your message:

B1209LS-1W 12V to9V converter DC DC power module converter 1000VDC Isolation

B1215LS-1W 12V to15V converter DC DC power module converter 1000VDC Isolation

i got 4 of each so everything is isolated! or it will be in 3 weeks when they arrive. the ones you quoted look better.

am i almost out of the woods yet though? i have igbt, drivers, psus soon, pic spwm.







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Richo
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need some help with igbt drivers please

Post by Richo » Wed, 08 Jun 2016, 21:00

Yep that'll work just the same.

4 of each ie isolating only the high side with a spare.
Help prevent road rage - get outta my way! Blasphemy is a swear word. Magnetic North is a south Pole.

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Richo
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need some help with igbt drivers please

Post by Richo » Wed, 08 Jun 2016, 21:22

What are you using for current feed back?
For a cheap drive the ACS756SCA series or similar should be ok.
Help prevent road rage - get outta my way! Blasphemy is a swear word. Magnetic North is a south Pole.

antiscab
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need some help with igbt drivers please

Post by antiscab » Thu, 09 Jun 2016, 22:47

drspastic wrote:
this will all be good practice as i have 3 more even bigger igbt bricks and a saab 9-5 aero with a main bearing crunched just gasping for a 3 phase motor!


If you're interested in AC, EV Shop have a tritium 165kva controller with a matching induction motor (4-pole ~70-80kg ish) going for $6k or there abouts

Matt
2008 Mazda 2 - EV Shop convert
2011 Blade Electron mk6
2007 vectrix - 117'000km
1993 Electrolux - needs batt and charger
1998 Prius - needs batt
1999 Prius - needs batt

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