Can someone point me to a brushless DC generator model (not motor)?

Driving the mechanical port of the AC7 model generates output on the electrical lines, but the output does not correspond to how a generator works. (For example, increasing the ohmic value of the electrical port load increases the power through the load, exponentially.) I suspect the model is only designed to be a motor, not generator. Is there a generator model available modeling a three phase brushless DC motor (of a few hundred watts)? I need to model a BLDC motor braking a mechanical load, using electrical resistance connected to the motor coils. Thanks.

[John Amaro]

Hi @Hwel

Is it possible that you could provide me with your simulink file. I am new to Simulink and I am trying to do a project envolving a brushless DC motor working both in motor and generator mode.

[akram fenni]

Hello,if you can send me the simulation please

Answer 1

[Sambit Senapati]

AC7 is BLDC motor drive not a BLDC motor model. You need to use one of the following:

• FEM-parameterized PMSM of Simscape
• Surface Mount PMSM of Powertrain blockset
• Interior PMSM of Powertrain blockset
• Permanent Magnet Synchronous Machine from simscape/power systems/specialized technology/machines

[Hwel]

Yes, thank you for your response. I found the PMSM of Simscape and it does perform properly in generator mode. Apparently the drive circuitry in the AC7 model fouls generator mode, though looking at the circuit it should work. So, I'm using the AC7 block as a motor, and PMSM as a generator.