Very interesting, thank you! Do you have more information I can read about phase weakening and BLDC control algorithms?
I ask because I happen to be designing a BLDC motor controller, I am aware of using the back EMF to measure the motor phase, but never considered it as a force slowing the motor down. As a software engineer by trade I was hoping I could perhaps dynamically switch between the two control techniques to get low-end torque and high-end speed? I was also hoping to setup the controller to optimize the various parameters for the specific motor it is controlling by measuring the back EMF.
Check out endless-sphere.com. There are people there doin home-built motors and designing controllers. 99% of the content is just people messing around with their bicycles or arguing over silly things, but there are a few very highly technical people.
Also there is a open source motor controller called VESC from Vedder Electronics.
It's a modern controller with FOC modes and such things.
Originally designed for electric skateboards it has gone through many revisions and is a viable commercial product. The developer has a official vendor for buying the design, but there are many clones and variations of different prices and quality.
There are people on endless-sphere working on variations to scale it up for larger EVs.
I ask because I happen to be designing a BLDC motor controller, I am aware of using the back EMF to measure the motor phase, but never considered it as a force slowing the motor down. As a software engineer by trade I was hoping I could perhaps dynamically switch between the two control techniques to get low-end torque and high-end speed? I was also hoping to setup the controller to optimize the various parameters for the specific motor it is controlling by measuring the back EMF.
Any help is greatly appreciated :)