Recent content by Lagoethe

I tried new sequences of my hall sensor. It finally worked. A thousand thanks for your help.

Hello, A few mounths ago i bought an non-working E-Bike I could makethe motors and having torque,using the walk function of it, but the PAS was destroyed. I replaced the PAS sensor, and then i discovered that the controller wasn't giving him its 5V. So i also bought a controller and a throtle...

Thanks for your answer Below a little update considering your answer: The former sensor is a DH sensor http://www.kingmeters.com/project/dh-sensor/ Apparently it's a doublehall sensor On the new one I got only very few information cause i don't have the tool to dismount the crank...

Hello, I bought a non-working electric bakfiets (as we call). The former owner had the cable from his PAS torn off, and he had no time to repair it. He had only time to change the PAS, but the bike wasn't working anymore. So here is where i am now: - The controller: -36VDC -12A...

I'm waiting for last components. They should be home next week. Have you got some schematics of your boards/bread boards? Have a nice day (I can post mine in eagle if someone want)

Talking about plug and play motor was a very bad idea. In fact I'm looking for motor seither DC motor or sensored BLDC,which would have nearly the same characteriscs as Hub motor: rated at ~24/48 V and handles 1000 to 1500W. What suprises me is that I don't find cheap motors like this. In fact...

Hello, From what I have learned in this forum, there are two interesting technologies of motor for our purpose (e-bike): - dc motor. The motor controller "feed it" with a constant Voltage. - The BLDC / Brushless motor, which needs a much more complicated controller. This motor is 3-phases and...

Rhitee, you should check my last post on this thread. (and the attached file). I'm no master, but I really think it can be used to our purpose (you used to say the opposite a few months ago, i'd like you to check again please, and get your advice). You''r right, everything isn't good on...

I apologize to put this thread out of the grave but i'm designing a motor controler and I (once again) am blocked on the capacitors again! In the attached file there is a way to estimate the capacitor ripple current page 539: So this can be used to BLDC motor am I right? Here are my...

I found a solution to my problem, but now I face another one. There are 3 levels of protection depending on V(I_In) If V(I_In)>2.5V after 3 pulses the short circuit current protection is enabled. FCM8201 closes all motor drives and latches the close status. In order to go back to restore...

If someone masters MatLab It seems there is a GREAT work to do with this: https://decibel.ni.com/content/groups/power-electronics-development-center/blog/2012/01/13/3-phase-inverter-conduction-switching-loss-and-thermal-simulation

Hello My previous post was a little bit light, and there are some points you couldn't have guessed. First it's a brushless motor. (you had guessed) It's a hub bike motor. But I don't have the tool to open it. SO the only way I have to figure out how many poles there are without opening it is...

Hello How can I know, how many poles I have on my motor? Have a nice day

Hello everybody, I am designing a new controller using the FCM 8201 chip which seem perfect fo our applications http://www.fairchildsemi.com/an/AN/AN-8201.pdf My problems come quite late in the application note: Page 14 "Braking and instantaneous speed/load change during operation of BLDC...

Hello I've discovered something that looks like a great chip: the FCM8201. http://www.fairchildsemi.com/ds/FC/FCM8201.pdf My problem is that I don't know how to design (value of R) the Shunt resistors used to measure the global current. Page 13 of the doc there are some explanations, which...