Model-free predictive current control of IPMSMs based on an improved extended state observer with parallel resonant controller switching control strategy

IF 4 3区 计算机科学 Q1 COMPUTER SCIENCE, HARDWARE & ARCHITECTURE
Pan Li, Jianyong Su, Han Wang, Guijie Yang
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引用次数: 0

Abstract

Conventional deadbeat predictive current control (DPCC) relies on an accurate model, making it unable to handle both DC and AC unmodeled disturbances present in interior permanent magnet synchronous motor (IPMSM) drive systems. Model-free predictive current control (MFPCC) based on an extended state observer (ESO) with a ultra-local model reduces sensitivity to certain motor parameters and enhances system robustness. Nevertheless, this approach is limited by the bandwidth of the ESO, leading to poor disturbance observation for AC disturbances under multiple operating conditions, resulting in non-negligible current harmonics in the system. This paper introduces an enhanced MFPCC based on an improved extended state observer with parallel resonant controller switching control strategy(PRCSC-IESO). It observes major AC disturbances without amplitude attenuation and phase delay. Additionally, the introduction of a vector resonant controller (VRC) further suppresses current harmonics. The proposed observer can adaptively track AC disturbance frequencies and switch the number of VRCs according to actual rotational speed. The proposed MFPCC eliminates both DC and AC disturbances without requiring additional parameter information. Finally, experiments on a 7.1kw IPMSM validate the effectiveness of this approach in suppressing total harmonic distortion (THD) across various speed ranges and load conditions. Experimental results demonstrate that, compared to the traditional ESO method, the proposed method improves harmonic suppression capability by more than 40%. Additionally, the introduction of the switching control strategy reduces execution time by 24.4% at the rated motor speed, thereby enhancing the system’s operational efficiency.
基于改进扩展状态观测器和并联谐振控制器切换控制策略的ipmsm无模型预测电流控制
传统的无差拍预测电流控制(DPCC)依赖于精确的模型,使其无法处理内部永磁同步电机(IPMSM)驱动系统中存在的直流和交流未建模干扰。基于扩展状态观测器和超局部模型的无模型预测电流控制(MFPCC)降低了对某些电机参数的灵敏度,增强了系统的鲁棒性。然而,这种方法受到ESO带宽的限制,导致多种工作条件下交流干扰的干扰观测效果较差,导致系统中出现不可忽略的电流谐波。本文介绍了一种基于改进扩展状态观测器和并联谐振控制器切换控制策略(PRCSC-IESO)的增强MFPCC。它观察到主要的交流干扰,没有幅度衰减和相位延迟。此外,矢量谐振控制器(VRC)的引入进一步抑制了电流谐波。该观测器可以自适应跟踪交流扰动频率,并根据实际转速切换VRCs的数量。所提出的MFPCC消除了直流和交流干扰,而不需要额外的参数信息。最后,在7.1kw IPMSM上进行了实验,验证了该方法在各种速度范围和负载条件下抑制总谐波失真(THD)的有效性。实验结果表明,与传统的ESO方法相比,该方法的谐波抑制能力提高了40%以上。此外,开关控制策略的引入使电机额定转速下的执行时间缩短了24.4%,从而提高了系统的运行效率。
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来源期刊
Computers & Electrical Engineering
Computers & Electrical Engineering 工程技术-工程:电子与电气
CiteScore
9.20
自引率
7.00%
发文量
661
审稿时长
47 days
期刊介绍: The impact of computers has nowhere been more revolutionary than in electrical engineering. The design, analysis, and operation of electrical and electronic systems are now dominated by computers, a transformation that has been motivated by the natural ease of interface between computers and electrical systems, and the promise of spectacular improvements in speed and efficiency. Published since 1973, Computers & Electrical Engineering provides rapid publication of topical research into the integration of computer technology and computational techniques with electrical and electronic systems. The journal publishes papers featuring novel implementations of computers and computational techniques in areas like signal and image processing, high-performance computing, parallel processing, and communications. Special attention will be paid to papers describing innovative architectures, algorithms, and software tools.
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