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marco siqueira
Associate
Jan 7, 2020 12:46 AM UTC
Solved

How to brake a brushless DC motor?

Hello! I'm trying to smoothly brake a three phase brushless motor, by short circuiting the phases. At this moment an overvoltage occurs damaging the power circuit. Is this the right way to do it? Thanks

This topic has been closed for replies.
Karthik DM
Karthik DMBest answer
Associate III
Sep 13, 2020 2:43 PM UTC

Instead of shorting the phases, I have a another option for you.

Use another one switch(external Switch) when switch is opened it will give high command to MCU. During that time your MCU will stop all PWM.

So this method is smooth than short circuiting the phases.

6 replies

Laurent Ca...
Senior III
Sep 11, 2020 6:55 AM UTC

Dear marco siqueira

Do you have still this problem to solve?

Best regards

Laurent Ca...

marco siqueira
Associate
Sep 11, 2020 9:13 PM UTC

Yes, could you help me?

Karthik DM
Karthik DMBest answer
Associate III
Sep 13, 2020 2:43 PM UTC

Instead of shorting the phases, I have a another option for you.

Use another one switch(external Switch) when switch is opened it will give high command to MCU. During that time your MCU will stop all PWM.

So this method is smooth than short circuiting the phases.

Laurent Ca...
Senior III
Sep 23, 2020 5:08 PM UTC

Dear @marco siqueira​ 

Does the solution proposed by @Karthik DM​ OK for you?

Best regards

Laurent Ca...

Laurent Ca...
Senior III
Oct 30, 2020 10:23 AM UTC

Dear @marco siqueira​ 

I guess it does, therefore I consider this thread closed.

If not, feel free to reopen it by posting an answer.

Best regards

Laurent Ca...

SkyWork
Associate III
Feb 15, 2021 10:47 AM UTC

@marco siqueira​ 

Is it possible to share how to smoothly brake a three phase brushless motor?