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Conventional single-vector-based direct torque control (SVB-DTC) has been widely researched owing to its simple control structure, parameter robustness and fast response. However, the SVB-DTC often features large torque and flux ripple. To suppress the large ripple in torque and stator flux, recently, a duty-cycle-based DTC (DCB-DTC) scheme applying a zero vector and a nonzero vector to the drive...
All the eight voltage vectors of a two-level voltage source inverter are treated as candidate voltages applied to the cost function in the conventional model predictive control (MPC) in order to minimize the error between reference and practical stator current. Due to the usage of zero vector voltage, there are large common-mode voltage (CMV) which will deteriorates the operation performance and reliability...
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