The Exact Model Knowledge of the TMSHVPMSMTR (PMSM) is uncertain.

Dear All,

I started working with Estun  EMJ-04APA22 PMSM motor to develop DTC algorithm. If we anybody can provide information on dq axes inductance of this motor, it would be really helpful.

Phase inductances, that is, d-q inductances of the motor are equal to each other, 7 mH.

To answer the 3+yr old first post,

The motor is manufactured by ESTUN in China. Anaheim Automation is the re-seller to our contract manufacturer, who then boxes and sells to TI.

TO answer Murat,

You can use InstaSPIN-FOC to ID this motor yourself if you like.  We can only identify - today - an average Ls. We have no true information on the saliency (Ls_d vs. Ls_q) for this motor, but based on the construction and our work with algorithms for very highly salient motors, we know that it is quite low and can be treated as nearly identical.

#if (USER_MOTOR == Estun_EMJ_04APB22)                 
#define USER_MOTOR_TYPE                 MOTOR_Type_Pm 
#define USER_MOTOR_NUM_POLE_PAIRS       (4)         
#define USER_MOTOR_Rr                   (NULL)       
#define USER_MOTOR_Rs                   (2.200221)    
#define USER_MOTOR_Ls_d                 (0.008721023) 
#define USER_MOTOR_Ls_q                 (0.008721023) 
#define USER_MOTOR_RATED_FLUX           (0.3846985)   
#define USER_MOTOR_MAGNETIZING_CURRENT  (NULL)        

Thanks Chris.

Dear Chris,

Do you have the parameters for Estun EMJ-04APA22. Could you please provide the value for rated flux.

No, I don't have that specific PN motor. It may be quite similar to the one we re-sell though, and those parameters are above.

Dear Chris,

I confused about "base current"'、"base voltage" and "base torque".

Are they rated current (2.7A)、 rated voltage(200V) and rated torque(1.27Nm)?

If I modify these settings, the results will be different. 

You didn't mention them. I will really appreciate with your applying.

Thanks a lot.

see

Dear Chris:

I know the proportional relationship between code and actual.

But I'm not sure the relationship between base voltage and base current.

My motor (200V、2.7A、400W).

Should I follow P=IV?

If my power supply provide 120V.

My base voltage and base current should set to 120/sqrt(3) and 400/(base voltage)?

Please give me a simple example.

By the way, should I fill out ""# USER_MOTOR_RATED_FLUX           (0.3846985)   "" this value to"" BASE_FLUX ""?

Thanks!

Dear Chris,

Do you have stator inductance (H)?

Not Ld and Lq.

Stator Inductance = Ls_d = Ls_q in InstaSPIN-FOC

for the ESTUN motor this is (0.008721023) H

But I think you are using a controlSUITE project aren't you?

it's very hard to follow what you are doing..

I'm sorry about expressing not clearly, but you got me! Thanks Chris!

I really use controlSUITE project!

I use "HVPM_sensored_servo"  from   C:\ti\controlSUITE\development_kits\HVMotorCtrl+PfcKit_v2.1\HVPM_Sensored_Servo.

I should fill out these parameters as following:

//// Define the electrical motor parametes (Estun Servomotor)

#define RS 2.35 // Stator resistance (ohm)
#define RR // Rotor resistance (ohm)
#define LS 0.0065 // Stator inductance (H)
#define LR // Rotor inductance (H)
#define LM // Magnatizing inductance (H)
#define POLES 8 // Number of poles
//
//// Define the base quantites
#define BASE_VOLTAGE 236.140 // Base peak phase voltage (volt)
#define BASE_CURRENT 20 // Base peak phase current (amp)
#define BASE_TORQUE // Base torque (N.m)
#define BASE_FLUX // Base flux linkage (volt.sec/rad)
#define BASE_FREQ 200 // Base electrical frequency (Hz)

If I use default value, the current loop control(Level 4B lsw=1)  operates strangely.

I assume Iqref = _IQ(0.04), the feedback current will vibrate more and more.

So I think I should modify these parameters correctly.

I really appreciate with your applying!!!!!

Thanks a lot!

Best regards.