4 ms·

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

by bArray 7y ago

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. Any help is greatly appreciated :)

balfirevic 7y ago
Read this: https://krex.k-state.edu/dspace/bitstream/handle/2097/1507/JamesMevey2009.pdf;jsessionid=EC8BB0F5202A11CBF4AEE02B0EB2863F?sequence=1 https://krex.k-state.edu/dspace/bitstream/handle/2097/1507/J... It's a thesis from James Mavey titled "Sensorless field oriented control of brushless permanent magney synchronous motors". Other good resources: http://build-its-inprogress.blogspot.com http://build-its-inprogress.blogspot.com http://discourse.odriverobotics.com/ http://discourse.odriverobotics.com/ https://things-in-motion.blogspot.com https://things-in-motion.blogspot.com
deleted 7y ago
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natermer 7y ago
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. http://vedder.se/2015/01/vesc-open-source-esc/ http://vedder.se/2015/01/vesc-open-source-esc/ 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.

by bArray 7y ago

balfirevic 7y ago

Read this: https://krex.k-state.edu/dspace/bitstream/handle/2097/1507/JamesMevey2009.pdf;jsessionid=EC8BB0F5202A11CBF4AEE02B0EB2863F?sequence=1 https://krex.k-state.edu/dspace/bitstream/handle/2097/1507/J... It's a thesis from James Mavey titled "Sensorless field oriented control of brushless permanent magney synchronous motors". Other good resources: http://build-its-inprogress.blogspot.com http://build-its-inprogress.blogspot.com http://discourse.odriverobotics.com/ http://discourse.odriverobotics.com/ https://things-in-motion.blogspot.com https://things-in-motion.blogspot.com

deleted 7y ago

[deleted]

natermer 7y ago

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. http://vedder.se/2015/01/vesc-open-source-esc/ http://vedder.se/2015/01/vesc-open-source-esc/ 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.