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Optimal control of three-level PWM inverters

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3 Author(s)
Hálasz, S. ; Dept. of Electr. Machines & Drives, Tech. Univ. Budapest, Hungary ; Hassan, A.A.M. ; Bui Tin Huu

An harmonic loss-minimized optimal PWM strategy for three-level inverters is investigated. The different PWM methods for low-, middle-, and high-speed regions are presented. It is shown that, for three-level inverters, the optimized strategy in all speed regions differs from the optimal PWM strategy of two-level inverters. The developed optimal control ensures a minimum of harmonic losses for a predetermined number of commutations of three-level PWM inverters and for a given value of the fundamental harmonic voltage

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Industrial Electronics, IEEE Transactions on  (Volume:44 ,  Issue: 1 )