I am working on the MEB front drive, but I am replacing the driver board and the control board with my own design. The control of the IGBT module and the resolver is already working well, now it's time to continue with software development and control of the asynchronous machine.

Here is the ...

After some time of silence, I would like to get back to you with a small update.
I was able to drive the asynchronous machine in a U-f control system using the driver board and control board. The next steps are to connect the drive to a braking machine so that I can measure the electrical parameters ...

Thank you!

I based the excitation on a design suggestion from TI.
tidrvx9.pdf
However, I have adapted my circuit diagram slightly and will be happy to share it here.
Resolver_schematic.pdf

As a driver for the excitation winding, I used the ALM2402 circuit, which is advertised for this purpose ...

Small status update: Resolver excitation and position measurement is working.

There is news again. Since my last post I have designed a control board, which is now manufactured and assembled. It fits well into the inverter housing and is already connected to the encoder and temperature signals from the motor and the DC voltage measurement. The biggest challenge here was ...

Yes, that's right. The Tesla Model 3 motor could also be a good fit, even if it would certainly be bored with my 40 kW drive requirement :D.

Progress has also been made with the driving of the IGBTs in the MEB inverter. I have assembled the adapter board and installed it as a test.

IMG_20240918 ...

After some time has passed, I would like to get back to you with a basic update.

In the meantime, I have had the opportunity to talk to someone who has already converted a Barkas to an electric drive. He used a system from the company Fleck GmbH (https://www.fleck-elektroauto.de/). The company ...

Reverse Engineering of the Schematic of the existing driver board (Parts, Connections, etc.) is way more complicated for me than just design an equivalent driver board. Some ICs don't have a part number and i don't have a x-ray machine to follow the signal traces.

To the phase output side it is so large because of the mounting of the current sensors. On the DC-side i could have spared some millimeters, but it was easier and quicker in the design process to just make a rectangular shape. And the cost of the PCB isn't increased very much. I think it also helps ...

The adapter boards arrived today. After a short moment of tension, the certainty that all the holes are in the right place

After testing and function verification i will keep my promise.

A short question regarding the status of the production. The coupler is shown out of stock in the webshop. Is there a rough guess, when the next batch of couplers will be available?

Thank you very much!

Small update: I have finished designing the replacement driver board version 1 for the IGBT module.
Ansicht_TOP.jpg
Piggybacked onto this board are SKYPER 12 R drivers from Semikron. I also managed to remove the original driver board, which was pressed on using a press-fit connection, without ...

I would like to adapt one of my existing control boards. With a corresponding circuit to read out the Leaf resolver. So far I have only had experience with encoders. I program on the C2000 series from Texas Instruments. I would like to continue this in the future because I am very familiar with the ...

You're right, an EMC measurement is necessary in this case. However, as you rightly suspect, I have a good contact with a nearby EMC lab. I have already discussed this with the director. However, in the case of a private conversion, a relatively simple and quick measurement of the radiated emissions ...

Here are a few more pictures of the ID4 front inverter. This drives an asynchronous motor and has a rated output of 80kW.
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The IGBT power module FS660R08A6P2FLB is used together with the LEM current sensor HAH3DR 660-S07 ...

Hello friends of the electric drive.
I discovered this forum while researching the Leaf motor and, like many others, would now like to present my personal project. I am fascinated by how many enthusiasts are out there who want to convert their own special vehicle. I would like to use the forum for ...