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One of the main distinctive features of multiphase machines is the appearance of new degrees of freedom (voltages/currents) that do not exist in their three-phase counterparts. As a direct consequence, control approaches that apply a single switching state during the sampling period cannot achieve zero average-voltage production. In direct torque control (DTC) this implies that-currents are not regulated, whereas in finite-control-set model predictive control (FCS-MPC) an enhanced-current regulation is feasible only at the expense of disturbing the flux/torque production. Aiming to avoid these shortcomings, this work makes use of the concept of synthetic/virtual voltage vectors (VVs) to nullify/limit the-voltage production in order to improve the current regulation in the secondary planes. Two strategies using two and four virtual voltage vectors (2-VV and 4-VV, respectively) are proposed and compared with the standard case that applies a single switching state. Since standard MPC has the capability to indirectly regulatecurrents, the improvements with the inclusion of VVs are expected to be more significant in DTC strategies. Experimental results validate the proposed VVs and confirm the expectations through a detailed performance comparison of standard, 2-VV and 4-VV approaches for DTC and MPC strategies.

Power electronics and drives have increased their presence at industry both in renewable energies, power systems and electric traction. For this reason, future electrical engineers need to acquire advanced competences in this field. Although chalk-and-board and slides can be used at degree and master level, the inclusion of game-based activities improve the motivation and lifelong learning of students. This paper presents a newly design game to deeply understand the different arrangements and performance of power converter and electric machines. The game-based approach favors the acquisition of cross competences and promotes technical discussion and exposition abilities.