| 杨公德,孙伟,王朋.基于准谐振扩张状态观测器的永磁同步电机电流谐波抑制研究[J].电子测量与仪器学报,2026,40(4):68-78 |
| 基于准谐振扩张状态观测器的永磁同步电机电流谐波抑制研究 |
| Current harmonic suppression in permanent magnet synchronous motorsbased on quasi-resonant extended state observer |
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| DOI： |
| 中文关键词: 永磁同步电机 逆变器非线性 准谐振扩张状态观测器 周期性扰动 电流谐波抑制 |
| 英文关键词:permanent magnet synchronous motor inverter nonlinearity quasi resonant extended state observer periodic disturbance current harmonic suppression |
| 基金项目:国家自然科学基金项目(52107039)、国家自然科学基金重点项目(51937002)、福建省自然科学基金项目(2025J01524)资助 |
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| Author | Institution |
| Yang Gongde | 1.College of Electrical Engineering and Automation, Fuzhou University, Fuzhou 350108, China;
2. Fujian Key Laboratory of New Energy Generation and Power Conversion, Fuzhou University, Fuzhou 350108, China |
| Sun Wei | 1.College of Electrical Engineering and Automation, Fuzhou University, Fuzhou 350108, China;
2. Fujian Key Laboratory of New Energy Generation and Power Conversion, Fuzhou University, Fuzhou 350108, China |
| Wang Peng | Department of Electrical and Electronic Engineering, University of Manchester, Manchester M13 9PL, UK |
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| 中文摘要: |
| 针对现有扩张状态观测器难以兼顾周期性与非周期性扰动抑制能力，尤其对电压源逆变器非线性引发的特定频率谐波观测与补偿精度不足的问题，提出一种基于准谐振扩张状态观测器（quasi-resonant extended state observer, QRESO）的永磁同步电机电流谐波抑制方法。通过将准谐振控制器嵌入扩张状态观测器（extended state observer, ESO）中，构建兼具低频扰动观测和高频谐波抑制能力的准谐振扩张状态观测器，并在无模型预测电流控制框架中实现扰动前馈补偿。所提方法通过低频积分环节与高频谐振模块的协同作用，可精准提取6次谐波扰动，同时保持系统稳定性。实验结果表明，与现有扩张状态观测器相比，在
1、2和6 μs死区时间条件下，准谐振扩张状态观测器使交轴电流6次谐波分别降低95%、97%和97%，相电流5次和7次谐波含量下降至1%以下，显著改善了电流波形质量与总谐波畸变率，验证该方法在改善电流质量方面的优越性能。 |
| 英文摘要: |
| Aiming at the difficulty of existing extended state observers in balancing the suppression capabilities for both periodic and aperiodic disturbances, particularly the insufficient observation and compensation accuracy for specific frequency harmonics caused by nonlinearities in voltage source inverters, a current harmonic suppression method based on a quasi-resonant extended state observer (QRESO) was proposed. By embedding a quasi-resonant controller into the extended state observer (ESO) architecture, a QRESO with both low-frequency disturbance observation and high-frequency harmonic suppression capabilities was constructed, and disturbance feedforward compensation was implemented within a model-free predictive current control framework. The proposed method can accurately extract 6th-order harmonic disturbances through the synergistic action of low-frequency integral and high-frequency resonant modules while maintaining system stability. Experimental results demonstrate that compared with traditional extended state observers, under dead time conditions of 1, 2 and 6 μs, the QRESO reduces the 6th-order harmonic of q-axis current by 95%, 97% and 97% respectively, while decreasing the 5th and 7th harmonics of phase current to below 1%, it significantly improves the current waveform quality and total harmonic distortion, verifying the superior performance of this method in improving current quality. |
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