Sensorless three phase brushless DC motor drive simulation problem

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Juncheng
Juncheng 2024-9-21
回答： Joel Van Sickel 2024-10-1
Hi, i am building a simulink model of Sensorless brushless DC motor drive based on six-step communication, basically i use the zero-crossing detection first, and connect it to a state flow chart which states six step of the communiction logical, but i just can not get the back emf right, and there is no difference between three phase, i wonder what is wrong here, the sate flow and bemf on attachment, thank you!
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Shivam Gothi
Shivam Gothi 2024-9-30
Hello @Juncheng,
If possible, can you please provide the simulink model? This will assist in diagnosing the issue you're experiencing and recommending potential solutions to address it.

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回答（1 个）

Joel Van Sickel
Joel Van Sickel 2024-10-1
please start with this example if you are having trouble: https://www.mathworks.com/help/sps/ug/bldc-sensorless-control.html

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