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<p>Rotor position error (RPE) and inaccurate inductance parameters significantly influence the control performance of interior permanent magnet synchronous motors (IPMSMs) in the high-speed range. First, RPE arises from the initial position error and position sensor delay. A novel method is proposed to identify RPE by analyzing voltage characteristics during the zero-current deceleration processes. Second, inductance identification error arises from flux linkage saturation characteristics and RPE. To identify inductance accurately, an approach utilizing voltage variations during the constant-current acceleration processes is proposed. To identify RPE and inductance synchronously, this paper proposes an integrated acceleration-deceleration identification procedure without a test bench. The feasibility and effectiveness of the proposed method are substantiated through experimental validation.</p>

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Synchronous identification of rotor position error and saturation inductance for PMSM drives without calibration

  • 期刊论文

  • 发表日期：

    2026年4月13日

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  • Xingyang Guo,
  • Wei Sun,
  • Dawei Li,
  • Ronghai Qu

摘要

Rotor position error (RPE) and inaccurate inductance parameters significantly influence the control performance of interior permanent magnet synchronous motors (IPMSMs) in the high-speed range. First, RPE arises from the initial position error and position sensor delay. A novel method is proposed to identify RPE by analyzing voltage characteristics during the zero-current deceleration processes. Second, inductance identification error arises from flux linkage saturation characteristics and RPE. To identify inductance accurately, an approach utilizing voltage variations during the constant-current acceleration processes is proposed. To identify RPE and inductance synchronously, this paper proposes an integrated acceleration-deceleration identification procedure without a test bench. The feasibility and effectiveness of the proposed method are substantiated through experimental validation.