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

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DSP implementation <strong>of</strong> <strong>DTC</strong>-<strong>SVM</strong> control<br />

Figure 7.35. Experimental speed reversal for PMSM motor controlled via <strong>DTC</strong>-<strong>SVM</strong> <strong>with</strong> the<br />

estimated speed signal taken to the feedback ( Ω<br />

m<br />

=−1200rpm → 1200rpm<br />

). From the top: 1-<br />

stator flux component Ψ<br />

sα<br />

(0.25Wb/div), 2- measured speed (360rpm/div), 3 - electromagnetic<br />

torque (20Nm/div), 4- motor phase current (20A/div).<br />

Figure 7.36. Experimental response to load torque step change <strong>of</strong> PMSM motor controlled via<br />

<strong>DTC</strong>-<strong>SVM</strong> <strong>with</strong> the estimated speed signal taken to the feedback at Ω = 300rpm<br />

.<br />

( M = 0Nm → 10Nm<br />

). From the top: 1- reference speed (180rpm/div), 2- measured speed<br />

l<br />

(180rpm/div), 3 - electromagnetic torque (10Nm/div), 4- motor phase current (10A/div).<br />

m<br />

159

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