Harmonic elimination in a hysteresis-based direct torque Control of matrix converter-fed five-phase

Abstract

A novel direct torque control of matrix converter-fed five-phase permanent magnet synchronous motor (PMSM) is proposed in this paper. Due to some special applications of multiphase motors such as aerospace and ship propulsion, the volume and the weight of these drives are the most important challenging problems. Matrix converters allow a compact design due to lack of bulky dc-link capacitor and therefore can be reasonable alternatives to the conventional Voltage source inverters. Also, matrix converters generate higher number of output voltage vectors. As a consequence besides the control of electromagnetic torque and stator flux, input power factor can be controlled. In the reported direct torque control of five-phase PMSMs in the literatures, large harmonic current is a serious drawback. In this paper a new switching table is achieved that removes this problem. The novelty of this proposed method is characterized by simple structure, using matrix converter, large stator current harmonic elimination, unity input power factor and also torque ripple reduction.