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The trends in power DC/DC conversion are not only size and weight reduction together with a good efficiency; EMI and mass production are a must as well. In this context, piezoelectric transformers seem to be the ideal solution, since they allow higher switching frequencies (size and weight reduction) while also providing high efficiencies. Additionally, they are not magnetic devices, which facilitates...
Flux harmonic distortion factors (HDFs) of two space vector pulse width modulation (SVPWM) schemes, aimed at sinusoidal output voltage generation with five-phase voltage source inverters, have been evaluated in Part 1 of this paper. Analytical considerations and numerical integration have been applied in order to determine the switching properties of the considered SVPWM methods. It has been shown...
Numerous space vector PWM techniques have been developed in recent time for asymmetrical six-phase induction motor drives. These are in principle based on either 12 or on 24 sectors in the α-β plane. This paper introduces a modified continuous PWM technique, which is based on 12 sectors and which reduces the switching frequency when compared to the existing 12-sector based continuous space vector...
Predictive control techniques have been recently applied with success to electrical drives. The additional degrees of freedom in multiphase drives make the real-time implementation difficult if optimal solutions are sought due to the increased number of iterations. Recent research works propose a restrained search predictive control (RSPC) that restricts the available voltage source inverter (VSI)...
The interest in multiphase drives has re-emerged in the last decade, being the asymmetrical dual three-phase induction motor drive one of the most popular options. Predictive control techniques have been recently implemented in these multiphase drives. Proposed schemes have demonstrated high performance at the expenses of high computational cost, unknown switching frequency and the appearance of large...
Predictive control is becoming an alternative to standard vector control or direct torque control in electrical drives due to its fast torque response and design flexibility. In multiphase drives, where the complexity of the modulation techniques and control schemes is higher, the predictive control has proved to be a promising alternative. The main shortcoming of the standard predictive control (SPC)...
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