BLDC motor control using PWM

Oct 27, 2005 5 Replies

Hi,



When I control a BLDC using 3 PWM signals, do my PWM signals have to be phase shifed by 120 degrees?



I have a hall sensor to decide when to switch the MOSFETS.



Thanks.



Yes, a phase shift of 120degrees is needed. See

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Vriendelijke groeten ;-) Ron van Sommeren
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int. electric fly-in near Nijmegen, the Netherlands

I'm confused. A three phase dc motor?

In fact the same as a brushed motor but instead ofa commutator it uses an electronic commutator (controller, inverter) that gets his sync signals from the motor.

Vriendelijke groeten ;-) Ron van Sommeren

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int.electric fly-in

Everything you need to know........

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Regards Daveb

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