THREE-LEVEL DIRECT TORQUE CONTROL BASED ON BALANCING STRATEGY OF FIVE-PHASE INDUCTION MACHINE
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Keywords:
Five-phase induction machine, Five-phase three-level inverter, Direct torque control, Direct current link voltages balancing strategyAbstract
This paper proposes a direct torque control with dc voltages balancing strategy for a five-phase induction machine fed by a five-phase three-level diode-clamped inverter. The goal of the proposed multilevel direct toque control is not only to control the machine flux and torque but also to maintain the dc-bus voltage at the required level. This objective can be achieved by using a three-level direct torque control endowed with a balancing strategy based on the effective use of redundant switching states of the inverter voltage vectors. To make this clear, a set of simulation results is presented and discussed to verify the feasibility and effectiveness of the proposed control scheme.
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