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Nowadays, there is an increasing interest toward multiphase drives, particularly for medium- and high-power applications. In this paper, some modulation strategies for multiphase voltage-source inverters are compared and the modulation strategy with the minimum switching losses is determined. If the switching devices of the inverter are insulated-gate bipolar transistors or bipolar junction transistors,...
A generalized multi-phase space vector theory is considered for developing the space vector modulation of a nine-phase voltage source inverter (VSI). The space vector modulation (SVM) is based on the control of the voltage vector in the first d-q plane, imposing to be zero the voltage vectors in second, third, and fourth d-q planes, as in the relevant case of balanced sinusoidal load voltages. The...
In this paper an analytical approach to predict the current ripple in an inductive load fed by a matrix converter controlled with space vector modulation is presented. The analysis aims at determining the optimal modulation strategy that minimizes the rms value of the load current ripple. The minimization procedure is based on the analysis of the locus described by the current ripple in the d-q reference...
A generalized multi-phase space vector theory is considered for developing the space vector modulation of a seven-phase voltage source inverter. The modulation is based on the control of the voltage vector in the first d-q plane, imposing to be zero the voltage vectors in both the second and the third d-q planes. The proposed switching pattern includes one-leg commutation at a time, with the possibility...
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