Other Parts Discussed in Thread: TMS320F280049C, C2000WARE
Hello team,
We are using TMDSHVMTRINSPIN+TMS320f280049C we are following the examples presented in below path
C:\ti\c2000\C2000Ware_MotorControl_SDK_3_00_01_00\solutions\tmdshvmtrinspin\f28004x\ccs\sensorless_foc
We are using lab08 (over modulation), we have attached the results in below.
- With changing the modulation index motor speed is increased with TMDSHVMTRINSPIN hardware
- Whereas with my own hardware if we increased Modulation index there is slight change in speed
- We set all current and voltage scale factors correctly by following the “SPRUHJ1H”
- What might be the reason for speed not changed in my hardware?, can you please suggest?
Results with my Hardware:
I/P AC |
Iac(A) |
Vry(V) |
Vyb(V) |
Vbr(V |
Ir(A) |
Iy(A) |
Ib(A) |
Speed setting (Hz) |
Theoretical RPM |
o/p freq |
Actual RPM |
MI |
DC_bus |
229 |
0.56 |
195 |
195 |
197 |
0.18 |
0.19 |
0.16 |
30 |
90 |
26.7 |
77 |
0.5 |
309 |
231 |
0.5 |
203 |
202 |
203 |
0.16 |
0.18 |
0.18 |
30 |
90 |
29.29 |
80 |
0.57 |
312 |
229 |
0.58 |
203 |
203 |
202 |
0.194 |
0.2 |
0.2 |
30 |
90 |
27 |
80 |
0.66 |
307 |
Results with TI-hardware:
I/P AC |
Iac(A) |
Vry(V) |
Vyb(V) |
Vbr(V |
Ir(A) |
Iy(A) |
Ib(A) |
Speed setting (Hz) |
Theoretical RPM |
o/p freq |
Actual RPM |
MI |
DC_bus |
230 |
195 |
197 |
195 |
0.16 |
0.16 |
0.16 |
30 |
90 |
25 |
78 |
0.5 |
318 |
|
230 |
222 |
223 |
222 |
0.18 |
0.18 |
0.18 |
30 |
90 |
29.7 |
89 |
0.57 |
324 |
|
230 |
233 |
233 |
233 |
0.188 |
1.89 |
0.19 |
30 |
90 |
30 |
90 |
0.66 |
325 |
Below are my Motor parameters:
USER_MOTOR_TYPE MOTOR_TYPE_PM
USER_MOTOR_NUM_POLE_PAIRS (20)
USER_MOTOR_Rr_Ohm (0.0)
USER_MOTOR_Rs_Ohm (6.50093718)
USER_MOTOR_Ls_d_H (0.020496008015)
USER_MOTOR_Ls_q_H (0.020496008015)
USER_MOTOR_RATED_FLUX_VpHz (4.8)
USER_MOTOR_MAGNETIZING_CURRENT_A (NULL)
USER_MOTOR_RES_EST_CURRENT_A (2.0)
USER_MOTOR_IND_EST_CURRENT_A (-2.0)
USER_MOTOR_MAX_CURRENT_A (20.0)
USER_MOTOR_FLUX_EXC_FREQ_Hz (20.0)
USER_MOTOR_NUM_ENC_SLOTS (2500.0)
USER_MOTOR_INERTIA_Kgm2 (3.10002e-03)
USER_MOTOR_FREQ_MIN_HZ (5.0) // Hz
USER_MOTOR_FREQ_MAX_HZ (30.0) // Hz
USER_MOTOR_FREQ_LOW_HZ (2.5) // Hz
USER_MOTOR_FREQ_HIGH_HZ (25.0) // Hz
USER_MOTOR_VOLT_MIN_V (30.0) // Volt
USER_MOTOR_VOLT_MAX_V (260.0) // Volt
// PWM frequency is 5KHz
thank you