Endless Sphere

Haha guys slow down please... i want to ABuse Prius inverter. I will not use it as it was intended. Instead i want to keep top transistor open to conduct in both directions and use Lebowski brain with FW to power the motor. BUT while car will be charging i want to use this halfh bridge to charge the...

Amber this needs to be isolated! That's why I posted the circuit! Depends on how far reaching you want your power stage blowup to be :wink: Arber, i dont really understand the distinction beween the 400 and 650, but the controller ic needs to see the power stage supply voltage. :?: I guess my comme...

Arlo1 wrote: ↑

Oct 01 2019 11:12am

Amber this needs to be isolated!

That's why I posted the circuit!

Nope, Prius driver stage takes care of this for me. I just reap the fruits of its labour . It is similar to Volt driver stage, even better protected.

Arber, I think you misunderstand. When you want to deal with a 400 V battery you need to divide this voltage down by a factor 80. The controller IC will then work correctly for battery voltages between 200 and 400V, as these map in the 2.5 - 5 V range. You should not map 0 - 400V on 2.5 - 5V ! You'...

Ah and you use resistors to set the division for your viable input range. I get it! No need to worry about 2.5V range if you are never there. Thank you Arlo. However i am working now on Prius inverter and it has nice 0 - 5V voltage detection output which describes 0V - 650Vdc on the HV side and 0V -...

Hi Lebowski What kind of circuit would you use with analog voltage signal 0-5V for values from 0-400Vdc? You say your circuit only sees signal from 2.5V to 5V. That would mean i can only use signal from 200V to 400V! Could i translate 0-5V signal to 2.5-5V effectively? Suggestion? Should i use one A...

Maybe show a quick schematic of your intentions wrt the current sensors and the 2k2 resistors ? And I dont understand the bit about the 4k7 capacitors ? Sorry not caps, but resistors. 4K7 per channel is what Volt main board has installed just after the connector. So i replicated it and it does seem...

I think i used 1 kOhm and 10 nF in the (single) current sensor lines... for two sensors each sensor would need its own 2.2kOhm resistor in series with its output and then connect to the 10 nF. The resistor is a bit higher because two 2.2kOhm's in parallel is roughly 1 kOhm. This way by using equal ...

Hah, great minds truly think alike. I see he used some lenght of cable before he attached in paralel. I wonder if this is what Paul was describing when he told about his AC controller being used as DC motor controller. He paraleled uppe and lower IGBTs to get like 1000A push pull unit. He told he ha...

Dont thjnk parallelling two output stages is a problem, but I would definitely use all 6 current sensors then ! You can add the current sensor outputs using resistors. Hm... so i could just connect sensors in the same order they are connected to outputs. I.e. sensor A1 of one IPM would be parallel ...

I would like to ask if someone has experience with paralelling IGBTs for more power. My intention is to put 2x 6bridge (3phase) inverters in paralel. Controler in question is Lebowski with Chevy Volt 2x 600A inverter bridges which are sharing DC link. I would connect 3 phases on the output. Also i w...

Point 1 may still be caused by motor resistance not correct, you will need to experiment a bit. Or have a look in the saved conkout data (main menu y, only if you online saved else itll just be the old data) to see what happened. About takeoff, if at full current the torque is not enough it wont go...

1. Tripping Both; i mean tripping overcurrent at some 4Krpm as well as conking out at 8Krpm. 2. eRPM setting Now i have erpm set to 35Kerpm, which is some 8K motor rpm. But it is set exactly to the value. Thanks for explanation, i will set the difference ramp for all you explained. 3. What about the...

Interesting drive in what way ? There was lots of power available once motor started reving. From the stop however i would still have to start with 1st or 2nd. 3rd would stall the motor. Is that just the way FOC works or are there some settings to file out...? Also like i said if i would take the m...

I spend some time in Mazda RX8 yesterday. I did like you said and corrected/updated all menus. I put 300A to field weakening, some 75% and i found out motor wanted to turn to 9000rpm on 200Vdc! I reduced erpms then to 35kerpm and it is turning healthy up to 8Krpm. After a short but interesting drive...

You power two motor phases to align and lock position of rotor and then zero the sensor by shorting a set of zeroing pads. At least on RMC22 sensor, guess same here. works beautifully :D Exactly that! But i figured also that Lebowski controler can find and correct a bit of offset if you just use ze...

I got my motor in the Peugeot 406 now. Soon i will be able to test for myself the full extent of RPM and power the motor will provide.
https://leafdriveblog.wordpress.com/201 ... ame-is-in/

That's pretty cool. Looks like you could use that on almost any motor. I think they made it just that way because you always have access to the rear shaft somehow. Sensor outputs UVW signal as well as ABZ encoder signal for usual inverters. You just have to select correct wires. It is supplied by 5...

Guess it's this one: https://www.rls.si/en/rmf44-rotary-magnetic-module-on-metal-flange Yes this is the one. RMF44 I chose the U version that has commutation output and D means it reads 4 pole pairs. 12B is 12bit sensor and A12 means it is fitted with molex connector. With it you can buy a 4mm magn...

Yeah... well i lost my calm and went on to buy RLS encoder with commutation output. RMF44UD12BA12. I made a fitting that slides onto resolvers place. On the shaft i fit a polarised magnet that encoder senses. https://leafdriveblog.wordpress.com/2016/11/16/encoder/ That worked so good that car starte...

Here is the file from last settings from the drive in the video. Bas would there be any vital settings to change if i use 200Vdc vs if i use 380Vdc? Where in the FOC would i have to change if i wanted to get a similar response? Right now i get good take off with phase current set to 400A and i get o...

Ok I can now report that i made some improvement and some not so much... 1. I tried to change PLL frequency and damping. It didnt work I got serious vibration on any change. I reset this to 100hz and 0.8 2. I changed n setting in control loops to 0 or to 24 and 48. The best was at 48. With 0 motor w...

Guys i have to finish my work until tomorrow, then i can get to my friend and test the manual FOC range with Mazda in drive mode.
Also i suspect my results might be different since i use 360Vdc battery and he has 200Vdc.
Untill then...

A

OK i tried to measure leaf motor ohm resistance. I used 30V and 10A as a reference. Result was 110.5mV. I tried all phase wires variations. Therefore if i use ohm law.... and get 0,01105ohm = 110.5mohm Then i divide this to get one legs worth of 55.25mohm! Would that be correct? I dont have more po...

OK i tried to measure leaf motor ohm resistance. I used 30V and 10A as a reference. Result was 110.5mV. I tried all phase wires variations. Therefore if i use ohm law.... and get 0,01105ohm = 110.5mohm Then i divide this to get one legs worth of 55.25mohm! Would that be correct? I dont have more pow...