Search found 19 matches

by kywalda
Apr 14 2018 10:07am
Forum: Motor Technology
Topic: build your very own Lebowski controller !
Replies: 376
Views: 62099

Re: build your very own Lebowski controller !

Lebowski wrote:
Apr 14 2018 5:55am
Did the chip correctly find two temp sensors ? Does it display the two identification codes ?
Yes - the codes are there and the displayed values are increasing or decreasing in the right direction in 0.5 steps. I was just wondering about the high values...
by kywalda
Apr 14 2018 4:51am
Forum: Motor Technology
Topic: build your very own Lebowski controller !
Replies: 376
Views: 62099

Re: build your very own Lebowski controller !

Hi Bas, now I connected 2 temperature sensors to the controller. In setup m) c) "temperatur readings" I get quite high values about 120.0. Outside temperature is only 16 degC. Are the readings "raw" not degC (version v2p93) ? Or do I have any mistakes on my cables? Thanks and have a nice weekend, Arne
by kywalda
May 26 2017 2:09pm
Forum: Motor Technology
Topic: Lebowski's motor controller IC, schematic & setup, new v2.A1
Replies: 1820
Views: 225029

Re: Lebowski's motor controller IC, schematic & setup, new v

Or just set the battery regen amps to something the fuse and battery can handle? There is no reason to need to set it really high... Maybe the current sensors are not set properly? This is what I had before. But there was a kind of "rumpling-speed". With regen battery current of 80A is was between ...
by kywalda
May 25 2017 4:18pm
Forum: Motor Technology
Topic: Lebowski's motor controller IC, schematic & setup, new v2.A1
Replies: 1820
Views: 225029

Re: Lebowski's motor controller IC, schematic & setup, new v

Now if you add field weakening it will let you travel faster then the normal max of the back emf would allow and say you are going 70km/h or something you can easily get -150+ battery amps and blow the fuse but when you blow the fuse you will blow the controller as well!!! Don't set your battery re...
by kywalda
May 24 2017 3:35am
Forum: Motor Technology
Topic: Lebowski's motor controller IC, schematic & setup, new v2.A1
Replies: 1820
Views: 225029

Re: Lebowski's motor controller IC, schematic & setup, new v

Dear Bas and friends, just wanted to say thanks a lot for the great contoller, tipps and hints to get my scooter running :D Finaly I solved my two problems (weak power on start and "rumpling" on regen) by pushing up the phase current to 200A (maximum of current sensors). Then I put the regen-battery...
by kywalda
May 10 2017 11:54am
Forum: Motor Technology
Topic: Lebowski's motor controller IC, schematic & setup, new v2.A1
Replies: 1820
Views: 225029

Re: Lebowski's motor controller IC, schematic & setup, new v

Do you have any idea how to make an encoder for my motor? The motor has a built-in resolver, maybe there is a converter resolver to the hall? IMG_6313.JPG I would try to use the built-in resolver. There seems to be 16 sensors. The output has 6 pins. One for Vcc, one for GND, 4 for the signals (para...
by kywalda
May 02 2017 1:48pm
Forum: Motor Technology
Topic: Lebowski's motor controller IC, schematic & setup, new v2.A1
Replies: 1820
Views: 225029

Re: Lebowski's motor controller IC, schematic & setup, new v

As mentioned above, the delay in the system is important. I don't think it comes from the gate drivers, I would have a look at the RC filters in both the hall and current sensor lines... Oups - I don't have any RC filters in the hall lines... The current sensor line filters is this 1K / 10n? Cur-se...
by kywalda
May 02 2017 1:24pm
Forum: Motor Technology
Topic: Lebowski's motor controller IC, schematic & setup, new v2.A1
Replies: 1820
Views: 225029

Re: Lebowski's motor controller IC, schematic & setup, new v

izeman wrote:
kywalda wrote:Why will voltage rise? Isn't it constant (battery voltage)? So when climbing a hill with full throttle in dr3 the phase current will rise to max.
https://endless-sphere.com/forums/viewt ... =2&t=35278
A lot of math! I'll read it next weekend :-)
by kywalda
May 02 2017 1:20pm
Forum: Motor Technology
Topic: Lebowski's motor controller IC, schematic & setup, new v2.A1
Replies: 1820
Views: 225029

Re: Lebowski's motor controller IC, schematic & setup, new v

looking at the hex, your pwm freq is very low at 8kHz, what output stage do you run ? deadtime is extremely low at 300 nsec (for an 8kHz output stage). Typically you see 6kHz adn 2000 nsec deadtime for big IGBT's, or 20kHz and 500 nsec for FETs... there is no fieldweakening current in the hex... As...
by kywalda
May 02 2017 12:53pm
Forum: Motor Technology
Topic: Lebowski's motor controller IC, schematic & setup, new v2.A1
Replies: 1820
Views: 225029

Re: Lebowski's motor controller IC, schematic & setup, new v

This should protect the FETs from overheating and automatically reduces phase current when they get hot (so limiting the time the controller can output the really high current) wouldn't the very high phase current only occur during start in drive2? phase current will go down to battery current line...
by kywalda
May 02 2017 12:11pm
Forum: Motor Technology
Topic: Lebowski's motor controller IC, schematic & setup, new v2.A1
Replies: 1820
Views: 225029

Re: Lebowski's motor controller IC, schematic & setup, new v

Lebowski wrote: Did you have the fieldweakening turned on to get to 70km/h ?
Yes - about 50% of phase current.
by kywalda
May 02 2017 12:04pm
Forum: Motor Technology
Topic: Lebowski's motor controller IC, schematic & setup, new v2.A1
Replies: 1820
Views: 225029

Re: Lebowski's motor controller IC, schematic & setup, new v

I also noticed, that if you put in erpm menu a 0 to 0 value to the reverse ramp (I do not use the reverse function), the controller will not work in forward. So I entered some "dummy values" to the reverse ramp. Just for your information.
by kywalda
May 02 2017 11:54am
Forum: Motor Technology
Topic: Lebowski's motor controller IC, schematic & setup, new v2.A1
Replies: 1820
Views: 225029

Re: Lebowski's motor controller IC, schematic & setup, new v

About this 'block time'... If you want something like that it can be done: - put in bigger current sensors for 200 or even 300A (the peak phase current must ALWAYS be in current sensor range) - still keep the 50A battery current though. This will give you lots of torque at start but keeps the lower...
by kywalda
Apr 30 2017 2:27am
Forum: Motor Technology
Topic: Lebowski's motor controller IC, schematic & setup, new v2.A1
Replies: 1820
Views: 225029

Re: Lebowski's motor controller IC, schematic & setup, new v

I also think it's a timing problem.
maybe this is another feature request.

In the hall menu a "shift hall angles" with values from -60 to 60 degree. This is added to all of the measured angles...
by kywalda
Apr 29 2017 5:23pm
Forum: Motor Technology
Topic: Lebowski's motor controller IC, schematic & setup, new v2.A1
Replies: 1820
Views: 225029

Re: Lebowski's motor controller IC, schematic & setup, new v

The motor is a chinese 4 KW brushless DC: http://www.proud-eagle.com/product.asp?plt=31&pone=5 I did not open it, but it seems to have 30 poles (30 ticks on the halls per revolution). My main fuse is rated at 50A. I was not suprised when it could not stand my 80A max battery current. With the origin...
by kywalda
Apr 29 2017 2:08pm
Forum: Motor Technology
Topic: Lebowski's motor controller IC, schematic & setup, new v2.A1
Replies: 1820
Views: 225029

Re: Lebowski's motor controller IC, schematic & setup, new v

Thanks so much for your hints! What I did to increase the torque of drive_2: lowered the transition erpm -> no success calibrated hall sensors with low phase current -> no success changed PLL bandwidth -> no success increased kerpm max difference in hall menu -> littel success recallibrated halls wi...
by kywalda
Apr 29 2017 7:44am
Forum: Motor Technology
Topic: Lebowski's motor controller IC, schematic & setup, new v2.A1
Replies: 1820
Views: 225029

Re: Lebowski's motor controller IC, schematic & setup, new v

Hi Bas, finaly I got your controller running on my E-Max scooter :D It is running very smooth and quick (about 70km/h at 16s LiFePo). Regen works like a charme. But it has a very low torque when starting at sensored mode. What are the parameters to give more power in this mode. And how can I define ...
by kywalda
Jun 07 2016 2:33pm
Forum: Motor Technology
Topic: build your very own Lebowski controller !
Replies: 376
Views: 62099

Re: build your very own Lebowski controller !

Have a look at the two stacked zener diodes and the resistor. Did you calculate the resistor for 60 V ? Did you put zenerdiodes and not (accidently) a normal diode ? All diodes the right way around ? And finally, it is better to have a little bit of load, so did you put both power indicator LEDs in...
by kywalda
Jun 07 2016 2:01pm
Forum: Motor Technology
Topic: build your very own Lebowski controller !
Replies: 376
Views: 62099

Re: build your very own Lebowski controller !

Yesterday I started to build my very own Lebowski controller... and failed already at the power supply :( The 5V part is perfect. It is constant from 20V to 36V input. And it is constant with or without any load :D But --- the 15V output rises with a rising Input voltage. When about 36V input it is ...