In order to improve the efficiency of dual three-phase permanent magnet synchronous motor (DT-PMSM), a novel overmodulation algorithm is proposed. In non-sinusoidal voltage modulation area, based on the space vector pulse width modulation (SVPWM) algorithm, minimum amount of harmonic voltages injected in the harmonic subspace are calculated using improved four-vector space vectors. In order to simplify the PWM hardware and software implementation, the modulation algorithm is implemented with three-phase decomposition PWM, which can generate symmetric pulse width modulation waveforms. And it can transit from sinusoidal voltage modulation region to non-sinusoidal voltage modulation region smoothly. The effectiveness of the proposed algorithm has been validated in experimental in a Dual-three PMSM driving system. Keywords-Dual-three PMSM; overmodulation; four vectors SVPWM; three-phase decomposition PWM; harmonics suppression
PWM algorithm for Dual three-phase PMSM driving system
02.12.2021
742152 byte
Aufsatz (Konferenz)
Elektronische Ressource
Englisch
Overmodulation Strategies for Dual Three-Phase PMSM Drives
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