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ES1
Level 1
Level 1
25 sign-ins 10 replies posted 5 replies posted

I am trying to run motor in low RPM it runs fine but if put a sudden load motor stops and tries to start again and important point is i cannot use current control method only voltage control is possible.

Is there any solution to rectify this problem please let me know.

I have attached configuration file and motor parameters below for your reference.

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1 Solution
Krupashankar
Moderator
Moderator
Moderator
500 replies posted 50 likes received 25 likes received

Hi @ES1,

Yes, Torque variations can be controlled by enabling torque compensation.

For more details please refer to section 2.1.15 Torque Compensation of iMOTION™ Motion Control Engine
Software Reference Manual  

Please let us know if any further details are required.

 

Thanks,

Krupashankar

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3 Replies
Krupashankar
Moderator
Moderator
Moderator
500 replies posted 50 likes received 25 likes received

Hi @ES1,

Can you please make sure that the Parameters given in the motor datasheet are per-phase values?

Please modify these values in MCE Wizard:

  • Ques 7- Motor Back EMF constant Ke - Back-emf constant 1.47 Vs/rad = 88.83 V/KRPM
  • Ques 60 - Flux Estimator Time Constant - 20-25 msec( 4 to 5 times of L/R)

For High torque at low-speed application current control mode is recommended and please tune Kp/Ki based on the load.

At low speed, sensorless operation is not recommended for high torque-demanding applications and please make sure the current sensing parameters are configured correctly for better angle detection.

 

Thanks,

Krupashankar

 

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Hi @Krupashankar 

Thanks for replying  I tried changing the parameter but it doesn't work,

And I want to know if I change Torque compensation gain will it be useful to solve this problem. 

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Krupashankar
Moderator
Moderator
Moderator
500 replies posted 50 likes received 25 likes received

Hi @ES1,

Yes, Torque variations can be controlled by enabling torque compensation.

For more details please refer to section 2.1.15 Torque Compensation of iMOTION™ Motion Control Engine
Software Reference Manual  

Please let us know if any further details are required.

 

Thanks,

Krupashankar

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