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Direct torque control with imposed switching frequency in an 11-level cascaded inverter

Direct torque control with imposed switching frequency in an 11-level cascaded inverter,10.1109/TIE.2004.831733,IEEE Transactions on Industrial Electr

Direct torque control with imposed switching frequency in an 11-level cascaded inverter   (Citations: 25)
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This paper presents the application of direct torque control in an induction motor, using a multilevel cascaded inverter with separated DC sources. The control strategy operates with imposed switching frequency, improving torque behavior. The paper studies the theoretical concepts related to this method, like vector selection, state variables estimation, and commutation time calculation. In addition, this paper presents results for a three- and eleven-level inverter-fed drives, from which it can be appreciated that the increase of levels of the load voltage reduces the torque ripple.
Journal: IEEE Transactions on Industrial Electronics - IEEE TRANS IND ELECTRON , vol. 51, no. 4, pp. 827-833, 2004
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