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Sensorless robust control for PMSG wind energy conversion systems based on smith predictor ADRC and SMO-PLL estimation 基于smith预测器自抗扰控制器和smoo - pll估计的PMSG风能转换系统无传感器鲁棒控制

COMPEL Pub Date : 2023-11-16 DOI: 10.1108/compel-10-2022-0353

Abdeldjabar Benrabah, Farid Khoucha, Ali Raza, Mohamed Benbouzid

{"title":"Sensorless robust control for PMSG wind energy conversion systems based on smith predictor ADRC and SMO-PLL estimation","authors":"Abdeldjabar Benrabah, Farid Khoucha, Ali Raza, Mohamed Benbouzid","doi":"10.1108/compel-10-2022-0353","DOIUrl":"https://doi.org/10.1108/compel-10-2022-0353","url":null,"abstract":"<h3>Purpose</h3>\u0000<p>The purpose of this study is to improve the control performance of wind energy conversion systems (WECSs) by proposing a new sensorless, robust control strategy based on a Smith predictor active disturbance rejection control (SP-ADRC) associated with a speed/position estimator.</p>\u0000<h3>Design/methodology/approach</h3>\u0000<p>The estimator consists of a sliding mode observer (SMO) in combination with a phase-locked loop (PLL) to estimate the permanent magnet synchronous generator (PMSG) rotor position and speed. At the same time, the SP-ADRC is applied to the speed control loop of the variable-speed WECS control system to adapt strongly to dynamic characteristics under parameter uncertainties and disturbances.</p>\u0000<h3>Findings</h3>\u0000<p>Numerical simulations are conducted to evaluate the speed tracking performances under various wind speed profiles. The results show that the proposed sensorless speed control improves the accuracy of rotor speed and position estimation and provides better power tracking performance than a regular ADRC controller under fast wind speed variations.</p>\u0000<h3>Practical implications</h3>\u0000<p>This paper offers a new approach for designing sensorless, robust control for PMSG-based WECSs.</p>\u0000<h3>Originality/value</h3>\u0000<p>A new sensorless, robust control is proposed to improve the stability and tracking performance of PMSG-based WECSs. The SP-ADRC control attenuates the effects of parameter uncertainties and disturbances and eliminates the time-delay impact. The sensorless control design based on SMO and PLL improves the accuracy of rotor speed estimation and reduces the chattering problem of traditional SMO. The obtained results support the theoretical findings.</p>","PeriodicalId":501376,"journal":{"name":"COMPEL","volume":"28 11","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-11-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138523655","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Improving the accuracy for amplitude and frequency of analytical equation of single-ended ring oscillators based on circuit and transistor parameters 提高了基于电路和晶体管参数的单端环形振荡器振幅和频率解析方程的精度

COMPEL Pub Date : 2023-07-12 DOI: 10.1108/compel-02-2023-0072

Mehrdad Moradnezhad, Hossein Miar Naimi

{"title":"Improving the accuracy for amplitude and frequency of analytical equation of single-ended ring oscillators based on circuit and transistor parameters","authors":"Mehrdad Moradnezhad, Hossein Miar Naimi","doi":"10.1108/compel-02-2023-0072","DOIUrl":"https://doi.org/10.1108/compel-02-2023-0072","url":null,"abstract":"<h3>Purpose</h3>\u0000<p>This paper aims to find a closed-form expression for the frequency and amplitude of single-ended ring oscillators when transistors experience all regions.</p>\u0000<h3>Design/methodology/approach</h3>\u0000<p>In this paper, the analytical relationships presented for ring oscillator amplitude and frequency are approximately derived due to the nonlinear nature of this oscillator, taking into account the differential equation that governs the ring oscillator and its output waveform.</p>\u0000<h3>Findings</h3>\u0000<p>In the case where the transistors experience the cut-off region, the relationships presented so far have no connection between the frequency and the dimensions of the transistor, which is not valid in practice. The relationship is presented for the frequency, including the dimensions of the transistor. Also, a simple and approximately accurate relationship for the oscillator amplitude is provided in this case.</p>\u0000<h3>Originality/value</h3>\u0000<p>The validity of these relationships has been investigated by analyzing and simulating a single-ended oscillator in 0.18 µm technology.</p>","PeriodicalId":501376,"journal":{"name":"COMPEL","volume":" 3","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-07-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138521696","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

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