TMS320F28069M: BLDC_SENSORED operation Docs regarding Bemf

thiru senthilvel kumaran p

Prodigy 80 points

Part Number: TMS320F28069M
Other Parts Discussed in Thread: CONTROLSUITE,

Hi,

I required the clarification on BLDC_SENSORED operation Docs regarding Bemf.

1. why they are using bemf feedback in sensored operation as shown below docs screenshot

Need clarification on this.

over 2 years ago

0 Sahil Deshpande over 2 years ago

TI__Expert 6035 points

thiru senthilvel kumaran p said:
BLDC_SENSORED operation Docs

Could you kindly mention the document you are referring to here. Please also mention the device you are working with.

Thanks.

0 thiru senthilvel kumaran p over 2 years ago in reply to Sahil Deshpande

Prodigy 80 points

I am referring the Algorthim and document from Controlsuite BLDC SENSORED Project for TMS320F28069M

/cfs-file/__key/communityserver-discussions-components-files/171/8154._5B00_sprabq6_5D00_-Trapezoidal-Control-of-BLDC-Motors-Using-Hall-Effect-Sensors.pdf

Link is attached here.

1.My question is for Sensored operation in level 2 incremental build , why they showed Bemf A , Bemf B , Bemf c as graph representation.

2. why Bemf is required for Sensored Operation?

0 Sahil Deshpande over 2 years ago in reply to thiru senthilvel kumaran p

TI__Expert 6035 points

Alright, the thread has been assigned to the expert, so please expect a response soon.

Thanks.

0 Yanming Luo over 2 years ago in reply to thiru senthilvel kumaran p

TI__Guru** 116230 points

thiru senthilvel kumaran p said:
1.My question is for Sensored operation in level 2 incremental build , why they showed Bemf A , Bemf B , Bemf c as graph representation.

Just for your reference to know the motor works well in this build level.

thiru senthilvel kumaran p said:
2. why Bemf is required for Sensored Operation?

Sensored BLDC doesn't need BEMF.

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TMS320F28069M: BLDC_SENSORED operation Docs regarding Bemf