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Overmodulation Strategies for Dual Three-Phase PMSM Drives
Technical Paper
2022-01-0722
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
A comparative analysis of overmodulation methods is performed in the generalized form in this paper. The generalized form is based on four segmented formulae, which streamlines the execution of the PWM module. The comparative analysis considers five aspects: actual modulation index, harmonic content, transition to six-step operation, modulation index linearization, and execution complexity. The main contributions of this paper are twofold. Firstly, a thorough assessment of conventional overmodulation strategies for dual three-phase PMSM drives is undertaken. Secondly, a modified Minimum Phase Error (MPE) overmodulation method is proposed to extend the overmodulation to six-step operation. The modified MPE is introduced with advantages of wider modulation index range, low harmonic components in voltages and currents, smooth transition to six-step operation, and simple implementation. The comparative analysis and the modified MPE method are validated on a dual three-phase PMSM with two three-phase modulators.
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Citation
Zhang, Z., Taha, W., Mohamadian, M., Nahid-Mobarakeh, B. et al., "Overmodulation Strategies for Dual Three-Phase PMSM Drives," SAE Technical Paper 2022-01-0722, 2022, https://doi.org/10.4271/2022-01-0722.Also In
References
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