Synchronous Optimal Modulation: Frequency or Time Domain, Global or Constrained Optimization? 40 Years to the First Formulation

Khamitov, Anvar; Ruderman, Alex

doi:10.1109/tie.2017.2696513

Cited by 11 publications

(2 citation statements)

References 13 publications

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“…In this case the overall approach to define the switching times is based on the minimization of a suitable objective function which typically represents system losses [1]. Applying optimal PWM techniques for ac drive systems has been investigated since the seventies of the last century [16], [17], [18], [19], [20], [21], [22], [23], [24]. An overview of optimal modulation techniques is given in [20].…”

Section: B Optimal Pwmmentioning

confidence: 99%

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Optimization of PWM for the Overmodulation Region of Two-Level Inverters

Stumpf

Halasz

2018

IEEE Trans. on Ind. Applicat.

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Three optimized PWM techniques for the overmodulation region of two-level inverter-fed ac drives are introduced and investigated from harmonic loss minimization point of view. The optimization is elaborated for the lowest loss-factor, which is proportional to the square of rms value of current harmonics. The loss-factors are computed for different switching numbers as the function of the motor fundamental voltage. It is shown that, respect to the motor heating and torque ripples, the acceptable drive condition can be guaranteed by relatively low value of inverter switching frequency up to 96-97% of maximal possible motor voltage. Furthermore, it is shown that, the so-called Three vector methods have considerably better performance in the lower part of the overmodulation region than the so-called Two vector method for the same number of switching. The performance of the techniques is compared with other existing PWM techniques. The paper discusses the implementation details of the proposed optimal PWM techniques. The theoretical results are verified by experimental and simulation tests.

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Section: B Optimal Pwmmentioning

confidence: 99%

“…Paper [25] presents a synchronous optimal PWM method with practical implementation issues for modular multilevel converters. A comparison between time and frequency domain based optimization of PWM techniques is given in [24].…”

Section: B Optimal Pwmmentioning

confidence: 99%