The motor can't start normally

user4708725

Evaluation board: drv8301-hc-evm revd

Lab 10a Overmodulation

The working speed of the motor is 400 rpm,When I Disable forced angle,The motor can't start normally,Why?

The reference manual says that the motor can be started at full load.Please give a solution.

The reference manual says that the motor can be started Load valid offsets and disable offset recalibration,But,When I

CTRL_setFlag_enableOffset(ctrlHandle,FALSE); The motor can't start normally,Why?

over 6 years ago

0 Yanming Luo over 6 years ago

TI__Guru** 117110 points

1. The rotor position can't get correctly when the motor is zero or very low speed, so using force angle to generate the rotor angle for the startup with load at low speed.

2. You should set the correct offset value in user.h according to each board if you want to disable offset recalibration and get a good performance, especially you didn't use higher resolution parts for current and voltage sensing.

0 user4708725 over 6 years ago in reply to Yanming Luo

Expert 1030 points

1.When I Disable forced angle,The motor can't start normally,How to solve this problem?

2.Right.

0 Yanming Luo over 6 years ago in reply to user4708725

TI__Guru** 117110 points

As replied to you, the force angle must be enabled for the startup, especially the motor startup with a heavy load.

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The motor can't start normally