Gen2 Nissan Leaf inverter

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trseven   1 µW

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Gen2 Nissan Leaf inverter

Post by trseven » Jan 30 2018 11:27pm

I'm attempting to use the stock gen2 Nissan Leaf inverter with a lebowski controller. I've seen Tomdb do this with a Chevy Volt inverter (my backup plan, I've seen them cheap used) I still have to build a control board but I'd like to share my findings on the free inverter that came attached to my Nissan Leaf motor. Bear with me as even with an electronics background, I'm struggling a bit to understand.

The cable that plugs into CN601 on the control board connects to the power stage in the last picture. Pin out is as follows one wire going to each driver input :
pin 1) WN
pin 2) WP
pin 3) VN
pin 4) VP
pin 5) UN
pin 6) UP
pin 7) blank
pin 8) ground?? see photo, goes to each of the 6 drivers

Each IGBT is connected by a row of pins on each driver, this row of pins is labeled CNWN and so on for each driver. I've seen each phase labeled as W, V, and U. I'm guessing the N is negative and the P is positive. The IGBT is one long unit under both the positive and negative drivers.

Connector CN101 at the control board supplies 12V and ground:
Pin 1 and 2: 12V
Pin 4 and 5: ground

Connector CN151 at the control board has the 2 current sensors, one on V and the other U. 4 wires from each current sensor. I haven't looked to much at these yet but wondering why there are 4 wires.

Then there is a connector CN501 with 12 wires that plugs into the far right of the first picture, all these are unknown.

So with the proper lebowski controller will this power stage work? I already have it, it bolts nicely to the motor, I'd like to use it. I like Arlo's controller build, not beyond me but looks like a lot of work and money that I could use elsewhere.

Thanks,
Gerry C
Attachments
Labeleddriverboard.jpg
driverstage.JPG
drivesignalconnector.JPG
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amberwolf   100 GW

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Re: Gen2 Nissan Leaf inverter

Post by amberwolf » Jan 31 2018 2:09am

trseven wrote:
Jan 30 2018 11:27pm

Connector CN151 at the control board has the 2 current sensors, one on V and the other U. 4 wires from each current sensor. I haven't looked to much at these yet but wondering why there are 4 wires.
Look up "four wire measurement" techniques for the details (here on ES or elsewhere on teh web) but basically it makes readings more accurate/precise.

trseven   1 µW

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Re: Gen2 Nissan Leaf inverter

Post by trseven » Jan 31 2018 10:46pm

Thanks! I haven't discovered any info on the four wire measurement yet but I'll keep looking. One of the four on each sensor is tied to ground. It doesn't help that there is minimal info on the parts inside and the numbers that are there do not pull up any info on the parts.

Thanks again!
Gerry

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Re: Gen2 Nissan Leaf inverter

Post by liveforphysics » Feb 01 2018 12:38am

Each carcinogen vapor exposure includes a dice roll for cancer.

Each mutagen vapor exposure includes a dice roll for reproductive genetic defects in your children.

Each engine start sprays them into a shared atmosphere which includes beings not offered an opportunity to consent accepting these cancer experiences and defective genetics life experiences.

Every post is a free gift to the collective of minds composing the living bleeding edge of LEV development on our spaceship.

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Re: Gen2 Nissan Leaf inverter

Post by amberwolf » Feb 01 2018 2:03am

trseven wrote:
Jan 31 2018 10:46pm
I haven't discovered any info on the four wire measurement yet but I'll keep looking.
A simple google of the phrase itself finds enough:
https://www.google.com/search?q=four+wi ... 8&oe=utf-8

It's possible the 4 wires are for something else, but it's most likely this.
It doesn't help that there is minimal info on the parts inside and the numbers that are there do not pull up any info on the parts.
They could have custom markings on teh parts, or custom-made parts.

pm_dawn   100 W

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Re: Gen2 Nissan Leaf inverter

Post by pm_dawn » Feb 01 2018 9:38am

Regarding the four wires for each current sensor.

Isn't it for Hall Effect current sensors, so they need supply voltage and then a measurement signal.

look at this pdf.

http://www.lem.com/docs/products/hass_50_600-s.pdf

Regards
/Per

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fechter   100 GW

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Re: Gen2 Nissan Leaf inverter

Post by fechter » Feb 01 2018 9:46am

Yes, those sensors look like hall effect sensors, not a shunt resistor.

What are the numbers on the sensor? Is there a manufacturer logo?
If there is no data available, it should be possible to trace out the connections and at least figure out which pins are the power and which one is the signal.
"One test is worth a thousand opinions"

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Re: Gen2 Nissan Leaf inverter

Post by trseven » Feb 01 2018 8:20pm

Thanks for all the good info! And thanks amberwolf for some search help! But they do look like Hall Effect current sensors. I took your example pm_dawn and followed the pinout from the pdf. It looks like it matches up. At least ground is on the sensor pin 3. I have 190K ohms between pin 2 and 3. Followed pin 4 back to the control card, checking resistance it looks like I'm charging a cap with the meter. Pin 1? Says its a reference? Output on pin 2. There isn't anything on the outside of the current sensors except for a barcode with 00059466 on one and 00059465 on the other. It does look like the cover snaps together so I could investigate further if I need to. I still need to get a pcb made for the lebowski controller, figure out a precharge circuit, then some testing!

Thanks again!
Gerry
Attachments
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currentsensor2.JPG
currentsensor2.JPG (70.44 KiB) Viewed 1523 times
IMG_2949.JPG
IMG_2949.JPG (83.46 KiB) Viewed 1523 times
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IMG_2946.JPG (68.65 KiB) Viewed 1523 times

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amberwolf   100 GW

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Re: Gen2 Nissan Leaf inverter

Post by amberwolf » Feb 02 2018 12:53am

trseven wrote:
Feb 01 2018 8:20pm
I still need to get a pcb made for the lebowski controller
There's a few of those available here on ES, if you poke around for lebowski pcb in the titles or first post of threads.

figure out a precharge circuit
,
Tehre's also a number of threads aobut various precharge circuits, incluidng electronic ones by Fechter and Methods. (possibly others I've missed).

Nuts&Volts   100 W

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Re: Gen2 Nissan Leaf inverter

Post by Nuts&Volts » Feb 06 2018 9:01am

Just found an awesome paper detailing the differences between the Gen1 (11-12 MY) and the Gen2 (13-17? MY)

http://saegtl.org/ev/data/uploads/ev-co ... 1-1879.pdf

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Re: Gen2 Nissan Leaf inverter

Post by Arlo1 » Jun 15 2018 5:21pm

Nuts&Volts wrote:
Feb 06 2018 9:01am
Just found an awesome paper detailing the differences between the Gen1 (11-12 MY) and the Gen2 (13-17? MY)

http://saegtl.org/ev/data/uploads/ev-co ... 1-1879.pdf
Link broken
My Leaf motor controller build. http://endless-sphere.com/forums/viewto ... 27#p963227
My YSR build http://www.youtube.com/watch?v=BRo8r5g4NBg
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Nuts&Volts   100 W

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Re: Gen2 Nissan Leaf inverter

Post by Nuts&Volts » Jun 16 2018 10:20am

https://www.sae.org/publications/techni ... 4-01-1879/

That link should work. You have to buy the paper or find another means to get ahold of it

jhuebner   1 µW

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Re: Gen2 Nissan Leaf inverter

Post by jhuebner » Sep 18 2018 10:57am

Hi,

I came here searching for the pin header part numbers, no luck so far.
Anyway, I thought I would post some info I've discovered.
Besides PWM I found a signal for link voltage and possibly one for heatsink temp.
PWM is active low, driven by open collector outputs and common 5V.

https://www.youtube.com/watch?v=CFqhGHBDIxQ

Pin 8 - 5V, Pin 1-6 - Phase 1, 2, 3 Lowside, Highside (L1, H1, L2, H2, L3, H3).
12V on the 5-Pin Header red and pink UDC on 2-level header yellow
Current sensors: 5V on red and pink, GND on black and grey, I1, I2 on white and blue

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