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Communication Dans Un Congrès Année : 2022

Integrated Four-leg Inverter Structure For PMSM Drives with Open-phase Fault-tolerance and Internal Boost Operation

Résumé

An innovative four-leg inverter structure is proposed for three-phase permanent magnet synchronous machine (PMSM) drives in electric vehicles, which integrates the open-phase fault-tolerance and a boost function in the absence of a real boost stage. In this structure, the DC-source is connected between the neutral point of the motor and the fourth leg. The zero-sequence path of the whole structure can be simultaneously used in fault-tolerant and boost operations. To guarantee the stable torque output in post-fault conditions, the q-axis current should be maintained while the d-axis and 0-axis currents are reshaped by injecting different harmonic components. To track the post-fault current trajectories, a differential flatness-based controller is further proposed. Finally, experiments are carried out on a 1.2 kW PMSM to verify the effectiveness.
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Dates et versions

hal-04084644 , version 1 (28-04-2023)

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Citer

Xiaokang Zhang, Jean-Yves Gauthier, Xuefang Lin-Shi, Fei Wang. Integrated Four-leg Inverter Structure For PMSM Drives with Open-phase Fault-tolerance and Internal Boost Operation. 2022 IEEE Transportation Electrification Conference and Expo, Asia-Pacific (ITEC Asia-Pacific), Oct 2022, Haining, China. pp.1-6, ⟨10.1109/ITECAsia-Pacific56316.2022.9941905⟩. ⟨hal-04084644⟩
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