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Open AccessArticle

A Generalised Multifrequency PWM Strategy for Dual Three-Phase Voltage Source Converters

Facultad de Ingeniería, Universidad de Talca, Curicó 3341717, Chile
Facultad Politécnica, Universidad Nacional de Asunción, San Lorenzo 2111, Paraguay
Facultad de Ciencias de la Ingeniería, Universidad Paraguayo Alemana, San Lorenzo 2160, Paraguay
Facultad de Ingeniería, Universidad Nacional de Asunción, Luque 2060, Paraguay
Author to whom correspondence should be addressed.
Energies 2019, 12(7), 1398;
Received: 23 March 2019 / Revised: 7 April 2019 / Accepted: 9 April 2019 / Published: 11 April 2019
(This article belongs to the Special Issue Control of Multiphase Machines and Drives)
Pulse width modulation (PWM) strategies for the control of asymmetrical six-phase drives have been widely studied since the beginning of this century. Nevertheless, space vector modulation (SVM) techniques with multifrequency voltage injection for the control of all the degrees of freedom of the multiphase model is still a subject under research. This paper deals with this topic and introduces a generalised PWM method for a two-level voltage source converters. The architecture was derived by extending a three-phase modulator proposed as an alternative to the widely studied SVM. The proposal computes the duty times straightforwardly with a fast algorithm based on an analytical solution of the voltage-time modulation law. Theoretical derivations supported by experimental results demonstrate the proper synthesis of the multifrequency target voltage in the linear modulation region as well as good frequency behaviour of the presented modulation strategy. View Full-Text
Keywords: multiphase drives; pulse width modulation; dc-ac power converters multiphase drives; pulse width modulation; dc-ac power converters
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MDPI and ACS Style

Riveros, J.A.; Prieto, J.; Rivera, M.; Toledo, S.; Gregor, R. A Generalised Multifrequency PWM Strategy for Dual Three-Phase Voltage Source Converters. Energies 2019, 12, 1398.

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