Selective harmonic elimination techniques applied to five-phase inverter drives

This paper applies the selective harmonic elimination technique to 5-phase, 2-level inverters to assess the ability of the technique to eliminate specific harmonics. Whilst the technique is well-known, there is little information on its application to five-phase drives, where there are specific and important differences to three-phase counterparts. This includes the need to eliminate different harmonics, starting from the 3^rd harmonic, as opposed to the three-phase system where the 5^th harmonic is the first significant harmonic requiring elimination. The paper shows that when eliminating specific sets of harmonics there can be a multiplicity of solution sets where each solution set can generate a different maximum modulation index and a different voltage THD. The paper assesses these issues.