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A Novel Driving Scheme for Three-Phase Bearingless Induction Machine with Split Winding

2021; Multidisciplinary Digital Publishing Institute; Volume: 14; Issue: 16 Linguagem: Inglês

10.3390/en14164930

1996-1073

Francisco Elvis Carvalho Souza, Werbet Luiz Almeida da Silva, Andrés O. Salazar, José Alvaro de Paiva, Diego Antonio de Moura Fonsêca, Elmer Rolando Llanos Villarreal,

Electric Motor Design and Analysis

In order to reduce the costs of implementing the radial position control system of a three-phase bearingless machine with split winding, this article proposes a driving method that uses only two phases of the system instead of the three-phase traditional one. It reduces from six to four the number of inverter legs, drivers, sensors, and current controllers necessary to drive and control the system. To justify the proposal, this new power and control configuration was applied to a 250 W machine controlled by a digital signal processor (DSP). The results obtained demonstrated that it is possible to carry out the radial position control through two phases, without loss of performance in relation to the conventional three-phase drive and control system.