Extensão da Transformada dq para Máquina Síncrona de Imãs Permanentes Não Senoidal com Corrente de Sequência Zero

Abstract

This work proposes a novel generalized extension of the Park transformation (dq), which facilitates the control of permanent magnet synchronous machines with open-end winding or Y-connected machines with an accessible neutral, where the back electromotive force (BEMF) waveform is non-sinusoidal. The proposed transformation, called dqy, enables the utilization of all harmonic components present in the back electromotive force for electromagnetic torque production. The proposed extension is applied to a permanent magnet synchronous machine through a magnitude amplification coefficient and a rotation angle. The new coordinate system allows for the reduction of power losses in the stator winding, as all current flowing through the machine contributes to the production of electromagnetic torque. The results obtained through simulation and experimental testing validate the effectiveness of the proposed vector control.