• Welcome to our site! Electro Tech is an online community (with over 170,000 members) who enjoy talking about and building electronic circuits, projects and gadgets. To participate you need to register. Registration is free. Click here to register now.

Help on brushless motor control

Status
Not open for further replies.

marcosmelchiori

New Member
I´m intented to use a FET brigde to control a 3 fase DC brushless, sensorless motor. The project must prevent violent load variation on the motor shaft. I´m in a big doubt. What in fact these variations may cause? If my load is suddenly decreased or increased, may any FET be harmmed?

I will aprecciate any help I can get.

thanks.
 

Phasor

Member
control a 3 fase DC brushless, sensorless motor
3 Phase DC?? Isn't that a contradiction? Perhaps you mean 3-pole (actually 6-pole, as each pole has an opposing pole)?
 

marcosmelchiori

New Member
Thanks

I´d like to thank for the interest you´ve decicated do far.

About the 3 phase term, I believe it´s the most widely used term, even though it might seem incorect. It describes a brushless motor wich has three DC inputs, that´s all.

About the motor ratings, here it goes:

Kv = 839
Io = .65
Rm = .112
Kt = 1.722
Km = 5.15

Thanks.
 

kinjalgp

Active Member
It is better to use IGBT insted of FETs or MOSFETs.
 
Status
Not open for further replies.

EE World Online Articles

Loading
Top