发表机构
Newcastle University（纽卡斯尔大学）
机构由 AI 辅助整理，请以论文原文为准。AI 中文总结
针对电流源逆变器驱动高速永磁同步电机，提出基于弱谐振近似的无传感器控制方法，仅需直流母线电流和两个端子电压，在100千转/分下位置误差低于5度。
AI 中文摘要
电流源逆变器（CSIs）正成为高速电机驱动中电压源逆变器（VSIs）的有力替代方案，因为它们固有地抑制谐波电流、提供输出电压升压并减少电机侧电磁干扰。CSI供电的永磁同步电机（PMSMs）的无传感器控制仍不如VSI对应方案成熟，主要原因是传统实现需要测量所有电路状态变量。本文提出一种基于弱谐振的近似方法，从逆变器调制命令和前馈电容电流估计中重构定子电流，从而将传感需求降低为直流母线电流和两个端子电压。所提出的观测器-锁相环（PLL）结构在计算复杂度方面进行了分析，并在一个100瓦、100千转/分的基于氮化镓（GaN）的两级CSI原型（降压+CSI）上通过仿真和实验进行了验证。定量结果表明，在保持简化传感器组的同时，实现了精确的转子位置跟踪和高带宽运行。所提方法在仿真和实验中表现良好，在100千转/分时位置估计误差低于5度。
英文摘要
Current source inverters (CSIs) are emerging as competitive alternatives to voltage source inverters (VSIs) for high-speed motor drives because they inherently suppress harmonic currents, offer output-voltage boosting, and reduce motor-side electromagnetic interference. Sensorless control of CSI-fed permanent magnet synchronous machines (PMSMs) remains less mature than VSI counterparts, primarily because conventional implementations require measurement of all circuit state variables. This paper proposes a weak-resonance-based approximation that reconstructs stator currents from inverter modulation commands and feedforward capacitor-current estimation, thereby reducing the sensing requirement to the dc-link current and two terminal voltages. The proposed observer--PLL structure is analysed for computational complexity and validated through simulations and experiments on a 100~W, 100~krpm GaN-based two-stage CSI prototype (buck + CSI). Quantitative results demonstrate accurate rotor-position tracking and high-bandwidth operation while maintaining the reduced sensor set. Proposed method performs well in simulation and experiment, achieving a position estimation error below $5^\circ$ at 100~krpm.
CommentsAccepted, and presented at ICEM 2026
