Sorry for the delay, life got in the way of personal projects. Many thanks. If you're asking me, I can share my design no problem, but I'm just using a Teensy and generating the UVW signals with it. I'm calculating the angle, applying the MTPA formula and then outputting that to the UVW signals (the...

So, played a bit more. I cleaned up the wiring, most of all removed the crocodile clips. Bottom line: the higher the load, the lower the efficiency. That is probably down to the filtering inductance being too high? Also the higher the input voltage, the better the efficiency. Best figure was 91.8% ...

I got my boards from JLCPCB! Took longer than last time I ordered some, but they are more complex too.

140 degrees? Thats wayyy too much! 40 degrees should be about the most it can offset. And thats with upwards of 1200 phase amps. 130 degrees total advance is including the 90 degrees that FOC code already adds. But either way the Added chip has to convert the resolver signal into UVW signals anyway....

Well, anyway, it wasn't comfortable at all to use manual mode. Using normal mode on the other hand did feel fairly safe and I could do a set of measurements with re-flashed firmware if someone has better MTPA parameters for this particular motor. With a well tuned syncofs, spin it up with zero fiel...

If I went from 0 to 100A in an instant I'd need hearing protection and the fish scale might destruct. There's quite some bending and momentum in this test setup. Also, for some reason I couldn't get firmware updates to work so I'll probably skip modifying the code. The idea is a lower current to ta...

Try this spreadsheet to get a feel for Id vs Iq for your testing. Lower currents don't have as much effect, but also taper off with more current.

Maybe try just 2 steps, pre-loading with 100 amps for a second to take up all the slack, then do the full torque.

Flux linkage is rpm per volt, so that can be calculated pretty easily. At that point you should only have to manipulate lq minus ld to tune the torque for higher currents.

In the side, “O” is energized and “X” is not energized Oops, then it's all high gear all the time at the moment. But given we're not PWMing control of the line pressure, maybe this is for the best at the moment? With PWMing the electric oil pump, you should be able to leave the pressure control sol...

In the side, “O” is energized and “X” is not energized

Another option is the GS450h gearbox with a divorced transfer case. Most Ive seen are 1:1 High and around 2:1 or more in low.

Ha. I just re-read the data sheet again for the logic level translators. They have a built in pull up of 4k, so have to recalculate my RC filter for a 4K resistor (but I don't have to have an external resistor now). I also found an 8 port one in stock at JLC, updating it for that too.

Ok, got my PCB layout done. Its called Lebowski_Resolver_PCB_Final (the one on the bottom of the link).

I am sending the throttle signal to the teensy. It has a pwm port with an RC filter for throttle signal to the lebowski chip. I also have a CANbus, but need to figure out the CAN signalling hes using (he did say it was wasn’t off the shelf CANbus).

I see your theory and it is sound. But what I want to know how to convince DSpic30 to switch transistors early. How do you intend to change lebowski closed loop? Will you step up resolver position count? How will you get it back down without a hickup? Edit: don't think I am negative about this. I w...

Another question. How do you intend to tell the brain you advanced the current angle. As i remember this is changed by applying more id into the mix and this changes your reluctance torque. But you are correct. Lebowski does not correct start for IPM motors. IPM should see best torque angle on star...

Really good! Lebowski rulez in sensorless drive! For now i run my car on Lebowski directly. I have no outside interface because Volt inverter can trip desat all by itself and i wired another transistor to pull reset line to GND. I even dont use precharge circuit because Volt inverter can raise volt...

Hello, I'm sharing my inverter project. It uses the Lebowski brain (I really want the sensorless control) and it uses the power stage from a Volt/Amp era. I have based somewhat it on Bas' original design, but I have added components from Arber's design, Damien's designs, and some of Johnannes design...

https://youtu.be/TH14ry6TOy8 There is a resolver to UVW, I can’t remember if it does the other way around. Also, it wouldn’t be too difficult to take an arduino/stm32/teensy to take the signal input and convert it to resolver signal. Also could estimate the position between UVW signals based in cur...

It reports negative speed for MG1, as it does spin backwards with the input shaft locked (as compared to MG2).

The GS450h does have a mechanical parking pawl actuated buy the mechanical linkage like a traditional automatic transmission

Lads hope u are well ... lads am going to build a boat thinking of auris inverter converter an battery a gs450h gearbox an about 300hp am I mad . Wylie The only issue I see is the continuous duty nature of boats. Its worth a shot though! You have an unlimited supply of cool water to help out!

Thanks for the insight, I hadn't thought of working it out theoretically using the figures shown in the video. Ok it gives me some reassurance I'm on the right path! Read the ORNL study of the LS600H gearbox at the bottom (its the same trans, just with a transfer case). You can see the torque MG2 m...

Hello, I have committed to building an EV around the Lexus GS450H gearbox, donor vehicle is already bought, but I am curious to understand if any body has actually completed a project and done any kind of dyno test to understand the power achieved? I have eagerly watched all of Damiens Bexus and Le...