What does this research mean for the field?

A torque-preserving flux-weakening control strategy combining q-axis current compensation and adaptive voltage regulation reduces torque fluctuation by 22.1% and improves transient stability in IPMSM drives compared to conventional methods. Novelty: ClaimNovelty.METHODOLOGICAL. Consensus alignment: ConsensusAlignment.NEUTRAL.

What question did this study set out to answer?

To develop a flux-weakening control strategy that prevents transient torque deviation and suppresses current overshoot in interior permanent magnet synchronous motor (IPMSM) drives.

August 29, 2026World Electric Vehicle JournalOpen Access

Torque-Preserving Flux-Weakening Control for IPMSM Based on q-Axis Current Compensation and Adaptive Voltage Regulation

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Authors

XJXiao JuShanghai University of Engineering Science BHBo HuangShanghai University of Engineering Science SXShen XuMinistry of Education of the People's Republic of China

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Implication

Experimental study demonstrates reduced torque fluctuation and faster disturbance recovery in synchronous motor drives, indicating improved transient stability during high-speed flux weakening.

Key Points

To develop a flux-weakening control strategy that prevents transient torque deviation and suppresses current overshoot in interior permanent magnet synchronous motor (IPMSM) drives.
Derived an analytical q-axis current compensation law based on a torque-preservation condition to mitigate current-vector variation effects.
Designed a speed-dependent tuning law for the voltage closed-loop regulator using frequency-domain analysis with voltage-loop bandwidth as the primary design parameter.
Evaluated transient torque stability, current overshoot, and sudden-load disturbance rejection experimentally against the conventional negative d-axis compensation method.
Reduced torque-fluctuation amplitude from 2.35 N·m to 1.83 N·m (a 22.1% reduction) and eliminated the approximately 9% q-axis current overshoot seen in conventional flux weakening.
Decreased maximum speed dip under sudden load from 66 r/min to 61 r/min (a 7.6% reduction) and shortened recovery time from 0.28 s to 0.25 s (a 10.7% reduction).

Cite This Study

Ju et al. (2026) studied this question.

synapsesocial.com/papers/6a92be7b8e5d7d1fc0c122f5 https://doi.org/10.3390/wevj17090444

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Implication

Experimental study demonstrates reduced torque fluctuation and faster disturbance recovery in synchronous motor drives, indicating improved transient stability during high-speed flux weakening.

Torque-Preserving Flux-Weakening Control for IPMSM Based on q-Axis Current Compensation and Adaptive Voltage Regulation

Discussion

Member takes

Implication

Key Points

Cite This Study

Torque-Preserving Flux-Weakening Control for IPMSM Based on q-Axis Current Compensation and Adaptive Voltage Regulation

Discussion

Member takes

Implication

Key Points

Cite This Study

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