Direct Torque Control with Space Vector Modulation (DTC-SVM) of ...

DSP implementation of DTC-SVM control
Influence of sampling time for torque control loop in cascade DTC-SVM
The influence of sampling time on experimental torque tracking performance is
illustrated in Fig. 7.13-7.15. The dynamic test has been carried out for the same
condition ( Ω = 0rpm
) as for simulation shown in Fig. 5.24. The controller parameters
m
has been set according to Table 5.2. In all oscilograms we may see proper operation of
the torque control loop for different sampling time used in practice.
Figure 7.13. Experimental torque tracking performance of PM synchronous motor for zero
speed at sampling time Ts
= 100µ
s( fs
= 10kHz
). Reference torque from 0 to nominal value.
From the top:1- reference torque (4Nm/div), 2 - estimated torque (4Nm/div)
Figure 7.14. Experimental torque tracking performance of PM synchronous motor for zero
speed at sampling time Ts
= 200µ
s( fs
= 5kHz
). Reference torque from 0 to nominal value.
From the top:1- reference torque (4Nm/div), 2 - estimated torque (4Nm/div)
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