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Improved DTC Control Strategy of B12 Inverter Fed BLDC Motor Drives Considering Commutation Torque Dips

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Figure

Figure 1: B12 inverter with BLDC motor connected.
Figure 2: Back-EMFs, phase currents and the corre-sponding Hall-effect signals of BLDC motor .
Figure 4: The current flowing during sector I in thecase of a torque decrease under Legend (a): the DTC-1 scheme, (b): the proposed DTC-2 scheme.
Table 4: The DTC-2 strategy vector selection table.
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