If you like my work, please consider making a donation. When you pulse the power in to each coil, it forces the permanent magnets to move forward one partial rotation. I cotnroller the issue is a wrong dead time between high side mosfets and low side, that short circuit the motor windings or mosfets a bit and that will boost the voltage thanks also to the capacitors on the board but also asks more current from the power supply and will make the noise on the motor. Reverse Engineering: Brushless DC Motor Controller FOC starts with the separation of two basics things: But for now just as 6 steps the same as KU63, JUxx controllersjust kk63 the original firmware does when starts the motor and run it at very low speeds, before commutate to sinewave. I have an electric bike with an existing 36v w controller.
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Yolkree I have some clues. Halfords Group to stock Brompton Started by: For sure looks a good controller for 22 bucks. Similar projects worth following. The inductivity of the coil drives the current backwards then. So, some quick soldering in both and we can start testing Is there more to do?
So yeah you can de-rate the set-up you have or sell the kit and buy a lighter less powerful one. As you can see from the photos, the original soldering on this KU65 is quite scruffy, whereas those Conhismotor controllers were beautifully soldered, even though neither of them worked though! Well, not knowing anyone that works with BLDC motors; and not having a lot of time to spend researching; I went with path 3.
Does it look like it had a wire on it? For breaking you can also try to feed power backwards into the battery. When you buy a little Bafang kit they include a little controller to go with it.
I can drive Dalek Bob reasonably well. The other two will be its partner and the throttle signal. John, thanks for the pointer on where I might find some KU diagrams. Life is so much sweeter with this forum What, exactly, was the point here again? First in one direction: I apologize for my bad english.
You can spend time researching on your own, which takes substantially longer; 3. Your Password Forgot your password? You can spend often quite a lot of money to flail about until you figure out a tiny bit, and then iterate.
My workflow will be like this: The pad between where the orange and white wires are soldered is also an input to the CPU. The firmware sources are here: A KU63 works on throttle only out of the box.
Dontroller brake will work on SL. Become a member to follow this project and never miss any updates Become a member. Well, want two matching controllers. I stared with some web searching — has anyone reverse engineered this controller before?
In theory, the teensy should be able to read the pulses from the sensors and interpret them to assess speed of each motor. Most 10 Related.
KU63 Controller Case
KU63 CONTROLLER PDF
Yolkree I have some clues. Halfords Group to stock Brompton Started by: For sure looks a good controller for 22 bucks. Similar projects worth following. The inductivity of the coil drives the current backwards then. So, some quick soldering in both and we can start testing Is there more to do? So yeah you can de-rate the set-up you have or sell the kit and buy a lighter less powerful one. As you can see from the photos, the original soldering on this KU65 is quite scruffy, whereas those Conhismotor controllers were beautifully soldered, even though neither of them worked though!
Current limit There are two separate motor current limit circuits. The average current limit CPU reduces the motor voltage by changing the duty cycle. I tested what happens when this circuit is disabled: the maximum motor current will be increased from 14A to 16A. The fast current limit CPU switches off the commutation transistors too in case of over-current, with a frequency of However, this is not a real speed limiter, it is just a simple voltage divider built with R77 and R The pedelec legalisation device adds the extra speed limit functionality.
I am being using the donations to buy needed resources for my developments. I will post some detailed images when I get home from work. You should Sign Up. KU63 controller circuit board connections. What makes a BLDC controller good or bad?