TL9879 start up time

Announcements

Webinar: Integrated solutions for smaller, simpler low-voltage motor control design.
Join the webinar to experience!

Tip / Sign in to post questions, reply, level up, and achieve exciting badges. Know more

cross mob
lucas_wang
Level 1
Level 1
Distributor - Yuban(GC)
5 replies posted 10 questions asked 5 questions asked
 

 How long it takes to reach the maximum stable speed of a water pump with a maximum speed of 20000 rpm / 130W, using the TL9879. Can it reach full speed within 120ms,How is this time calculated and is there any relevant documentation available for reference?

0 Likes
3 Replies
Raj_C
Moderator
Moderator
Moderator
500 replies posted 50 likes received 250 replies posted

Hi @lucas_wang,

There is no reference document that discusses the Speed vs time curve of the TLE987x device. You will have to tune and test it with your system for different ramp-up rates (acceleration). 

You can refer to the FOC example for TLE987x: MOTIX™ FOC Library for TLE987x, Demo

Please let us know if you have further questions.

 

Thank you

Best Regards

Raj Chaudhari

0 Likes
lucas_wang
Level 1
Level 1
Distributor - Yuban(GC)
5 replies posted 10 questions asked 5 questions asked

hi raj:

   thanks for your help, the example cann't download(Downloads may be restricted. If so, please request access first)。Can we theoretically obtain the startup time, such as a RAM up speed at 500?

0 Likes
rohitrawat
Level 4
Level 4
Distributor
First solution authored 25 replies posted 50 sign-ins

Hey @lucas_wang ,

 

To reach Max RPM you may need to tune the motor by speed filter and Kp and Ki gain factor.

 

Best Regards,

Rohit

 

0 Likes