4.6 Article

Selective Harmonic Mitigation: Limitations of Classical Control Strategies and Benefits of Model Predictive Control

期刊

IEEE TRANSACTIONS ON INDUSTRY APPLICATIONS
卷 59, 期 5, 页码 6082-6094

出版社

IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/TIA.2023.3280893

关键词

Harmonic analysis; Switches; Modulation; Predictive control; Codes; Control systems; Power system harmonics; Selective Harmonic Mitigation PWM; Model Predictive Control; Linear Control; Stability Analysis

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This article surveys the application of selective harmonic mitigation pulsewidth modulation (SHMPWM) combined with model predictive control (MPC) in grid-connected power converters. The existing strategies are categorized and compared, and their performance is evaluated through hardware-in-the-loop (HIL) experiments.
Selective harmonic mitigation pulsewidth modulation (SHMPWM) combined with model predictive control (MPC) is a promising approach for grid-connected power converters. SHMPWM can guarantee grid code compliance in steady state, e.g. grid harmonic injection, with a reduced output converter filter, while MPC improves dynamic response and allows grid code compliance in the event of grid transients. This article presents a survey of the MPC strategies already published in the literature developed for their use with SHMPWM. The existing strategies fall into two categories: direct model predictive control with an implicit selective harmonic mitigation modulator, and direct model predictive control based on finite control set (FCS-MPC). One representative control strategy of each group is compared to each other and to the performance of classical proportional-integral (PI) controllers combined with SHMPWM. The goal is to identify the potential benefits of MPC for grid-connected power converters, and determine the main advantages and limitations of the two selected state-of-the-art control strategies. Their performance is assessed through hardware-in-the-loop (HIL) experimental results in terms of real-time implementation, harmonic content grid code compliance, dynamic response and performance under grid transients.

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