flux sector and the motor is running anticlockwise

flux linkage space vector in the direction of rotation. If a decrease in torque is required then zero switching vector is applied, the zero vector that minimize inverter switching is selected. In summary if the stator flux vector lies in the k sector and the motor is running anticlockwise then torque can be increased by applying stator voltage vectors Vk+1 or Vk-1, and decreased by applying a zero voltage vector V0 or V7. Decoupled control of the torque and stator flux is achieved by acting on the radial and tangential components of the stator voltage space vector in the same directions, and thus can be controlled by the appropriate inverter switching. In general, if the stator flux linkage vector lies in the “k” sector its magnitude can be increased by using switching vectors Vk+1 for clockwise rotation or Vk-1 for anticlockwise rotation and can be decreased by applying voltage vectors Vk+2 for clockwise rotation or Vk-2 for anticlockwise rotation.

(Luder and Jayne, 2012). In Accordance with figure 2.1, the general table 2.I can be written.

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It can be seen from table 2.I, that the states Vk and Vk+3 , are not considered in the torque because they can both increase or decrease the torque at the


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