An Optimization Formulation of Converter Control and Its General Solution for the Four-Leg Two-Level Inverter

This brief proposes an optimization formulation of the control problem for power electronic converters. A benefit of the approach is a systematic method for the control of high-switch-count static converters. In the case of the three-phase, four-leg, two-level inverter, the framework provides a char...

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Bibliographic Details
Published in:IEEE transactions on control systems technology 2018-09, Vol.26 (5), p.1901-1908
Main Authors: Bouarfa, Abdelkader, Bodson, Marc, Fadel, Maurice
Format: Article
Language:English
Subjects:
Automatic
Control allocation
Converters
Electric power
Engineering Sciences
four-leg two-level inverter
Harmonic distortion
Inverters
Linearity
median-voltage injection
Modulation
Optimization
Pulse width modulation
pulsewidth modulation (PWM)
Resource management
simplex algorithm
Switches
voltage control
voltage-source inverter
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Summary:This brief proposes an optimization formulation of the control problem for power electronic converters. A benefit of the approach is a systematic method for the control of high-switch-count static converters. In the case of the three-phase, four-leg, two-level inverter, the framework provides a characterization of all the possible solutions that yield a maximal extension of the inverter linearity range. The method makes it possible to recover well-known modulation strategies as well as to discover some new ones having different properties and distinct advantages. The characteristics resulting from different design choices are evaluated in simulations, with consideration being given to the linearity range, total harmonic distortion, and switching losses. Key principles of extension of the proposed method to multilevel, multileg converters are given, as well as motivations for a field-programmable gate array-based hardware implementation enabling real-time pulsewidth modulation control.
ISSN:1063-6536
1558-0865
DOI:10.1109/TCST.2017.2738608