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How start the motor in sensorless mode when the motor is roating?

tytzjs
Associate
Posted on October 30, 2014 at 09:36

hello:

   Air condition out fan motor is roating because of wind . I start up the motor will appear start up failed. How can I do?
3 REPLIES 3
Gigi
ST Employee
Posted on December 12, 2014 at 11:48

Ciao

We call this feature: ''Startup on the fly'' and untill now has been provided only under request.

We plan to have it as official feature of the next release planned for Q1 '15.

Ciao

Gigi  

mikemike9141
Associate III
Posted on March 13, 2015 at 10:11

good to hear, I also recognized this and am now eagerly waiting for the update :)

Regards

Frank

mikemike9141
Associate III
Posted on March 13, 2015 at 10:12

Question: will this require board changes like measuring phase voltages via ADC, or have you found a pure software based solution? When thinking about this, it seems difficulty to me. For example, which initial phase voltages to set when enabling the power stage...

Regards

Frank