Abstract
The modulation law of the two-level five-phase voltage source inverters is modelled with two decoupled subspaces and their respective reference voltages. A new voltage-time system based on the duty cycles for this topology is presented in this article. Then, an alternative scheme to the space vector modulation is developed by deriving an analytic solution for the case of study, which is achieved with a low-computational cost algorithm. The strategy reckons the duty periods of the power switches immediately and can be implemented straightforwardly in a digital controller. The zero-sequence voltage is also considered to provide multifrequency operation either in continuous or discontinuous switching modes. The experimental validation, considering the time and frequency responses, supports the theoretical derivations in the introduction of this new method.
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