Power Electronics and Drives最新文献_第3页

Rotor Speed and Load Torque Estimations of Induction Motors via LSTM Network 基于LSTM网络的异步电动机转子转速和负载转矩估计

Power Electronics and Drives Pub Date : 2023-01-01 DOI: 10.2478/pead-2023-0021

Mehmet Muzaffer Kosten, Alper Emlek, Recep Yildiz, Murat Barut

{"title":"Rotor Speed and Load Torque Estimations of Induction Motors via LSTM Network","authors":"Mehmet Muzaffer Kosten, Alper Emlek, Recep Yildiz, Murat Barut","doi":"10.2478/pead-2023-0021","DOIUrl":"https://doi.org/10.2478/pead-2023-0021","url":null,"abstract":"Abstract In this study, a long short-term memory (LSTM) based estimator using rotating axis components of the stator voltages and currents as inputs is designed to perform estimations of rotor mechanical speed and load torque values of the induction motor (IM) for electrical vehicle (EV) applications. For this aim, first of all, an indirect vector controlled IM drive is implemented in simulation to collect both training and test datasets. After the initial training, a fine-tuning process is applied to increase the robustness of the proposed LSTM network. Furthermore, the LSTM parameters, layer size, and hidden size are also optimised to increase the estimation performance. The proposed LSTM network is tested under two different challenging scenarios including the operation of the IM with linear and step-like load torque changes in a single direction and in both directions. To force the proposed LSTM network, it is also tested under the variation of stator and rotor resistances for the both-direction scenario. The obtained results confirm the highly satisfactory estimation performance of the proposed LSTM network and its applicability for the EV applications of the IMs.","PeriodicalId":373546,"journal":{"name":"Power Electronics and Drives","volume":"36 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135844191","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

Emulation of Mechanical Loads in Electric Drives – An Overview of Methods 电力驱动中机械负载的仿真。方法概述

Power Electronics and Drives Pub Date : 2023-01-01 DOI: 10.2478/pead-2023-0004

Viktor Šlapák, F. Ďurovský, Jozef Ivan, Matúš Hric

引用次数: 1

Evaluation of SVC-Coupled Hybrid DSTATCOM using JLMS Algorithm for Enhancement of Power Quality 用JLMS算法评价svc耦合混合DSTATCOM的电能质量

Power Electronics and Drives Pub Date : 2023-01-01 DOI: 10.2478/pead-2023-0002

M. Mangaraj, Jogeswara Sabat

{"title":"Evaluation of SVC-Coupled Hybrid DSTATCOM using JLMS Algorithm for Enhancement of Power Quality","authors":"M. Mangaraj, Jogeswara Sabat","doi":"10.2478/pead-2023-0002","DOIUrl":"https://doi.org/10.2478/pead-2023-0002","url":null,"abstract":"Abstract This research study explains the design and performance of a Static VAR Compensator (SVC) coupled Hybrid Distribution Static Compensator (DSTATCOM) for low voltage power distribution system (PDS). A comparative analysisis done between Voltage Source Inverter (VSI)-based DSTATCOM and SVC Hybrid DSTATCOM using Jordan Least Mean Square (JLMS) algorithm to alleviate the shunt-related power quality (PQ) glitches. The specific design is obtained as compared to the existing neural network toolbox algorithm to improve the estimation speed and accuracy. The main objective is to extract the tuned weighted values of fundamental active and reactive power components of distorted load currents for the switching signal generation using an adaptive JLMS algorithm.Several functions of DSTATCOM and hybrid DSTATCOM using this JLMS controller are showcased for harmonics curtailment, power factor (p.f.) improvement, load balancing, voltage regulation, etc. Simulation results on an SVC Hybrid DSTATCOM have shown an acceptable level of performance under unbalanced loading situations. Finally, some comparative results are provided to validate the feasibility and effectiveness of the suggested topology.","PeriodicalId":373546,"journal":{"name":"Power Electronics and Drives","volume":"47 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126855509","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

Analysis of the Stator Current Prediction Capabilities in Induction Motor Drive Using the LSTM Network 基于LSTM网络的感应电机驱动定子电流预测能力分析

Power Electronics and Drives Pub Date : 2023-01-01 DOI: 10.2478/pead-2023-0003

Krystian Teler, Teresa Orłowska-Kowalska

引用次数: 1

Integrated Model Predictive Control of a Single-Phase Multilevel T-type Converter for a Photovoltaic Grid Connected System under Failure Conditions 故障条件下光伏并网系统单相多电平t型变流器集成模型预测控制

Power Electronics and Drives Pub Date : 2023-01-01 DOI: 10.2478/pead-2023-0011

W. Boudja, K. Barra

{"title":"Integrated Model Predictive Control of a Single-Phase Multilevel T-type Converter for a Photovoltaic Grid Connected System under Failure Conditions","authors":"W. Boudja, K. Barra","doi":"10.2478/pead-2023-0011","DOIUrl":"https://doi.org/10.2478/pead-2023-0011","url":null,"abstract":"Abstract The article presents two contributions: the first is an optimised control structure for photovoltaic grid connected systems (PVGCSs). The power chain is composed of two cascaded power converters, namely, a boost converter and a five-level T-type multilevel converter. Traditionally, each power converter is controlled by a separate mode control (SMC) from the other, which is computationally intensive since each converter requires its own control system, which is not practical. The suggested control, called integrated finite set model predictive control (IFS-MPC), allows controlling cascaded converters at the same time in one stage, instead of controlling them separately. Consequently, the overall implementation system is widely reduced. The second contribution of the article is a modified IFS-MPC called modified integrated finite set-model predictive control (M-IFS-MPC), which ensures the correct functioning of the grid-tied PV system under certain faults in converter components. Indeed, when one of the DC-link capacitors fails or when one of the auxiliary switches breaks down, by selecting an appropriate choice of the DC-link capacitors’ voltage reference, the proposed design allows a normal operation without intervention on the power circuit.","PeriodicalId":373546,"journal":{"name":"Power Electronics and Drives","volume":"22 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129114756","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

Analysis of the Drive of the Electric Vehicle with Six-Phase Induction Motor 六相感应电动机驱动电动汽车的分析

Power Electronics and Drives Pub Date : 2023-01-01 DOI: 10.2478/pead-2023-0017

J. Listwan, Piotr Oleszczyszyn

引用次数: 0

A Comparative Study of Grid-Following and Grid-Forming Control Schemes in Power Electronic-Based Power Systems 基于电力电子的电力系统电网跟随与成网控制方案的比较研究

Power Electronics and Drives Pub Date : 2023-01-01 DOI: 10.2478/pead-2023-0001

Xian Gao, Dao Zhou, A. Anvari‐Moghaddam, F. Blaabjerg

{"title":"A Comparative Study of Grid-Following and Grid-Forming Control Schemes in Power Electronic-Based Power Systems","authors":"Xian Gao, Dao Zhou, A. Anvari‐Moghaddam, F. Blaabjerg","doi":"10.2478/pead-2023-0001","DOIUrl":"https://doi.org/10.2478/pead-2023-0001","url":null,"abstract":"Abstract Along with de-carbonisation, the penetration of power electronic converters has increased, and the power system has become a power electronic-based power system. In such a situation, the stability of the power system faces great challenges. In the event of a large disturbance, the power grid will lack the ability to maintain a stable voltage and frequency. In order to improve the stability of the power grid, the traditional grid-following (GFL) control is needed to be converted to the grid-forming (GFM) control. This paper analyses the control schemes of the GFL and GFM converters by investigating their state-space models, and the eigenvalue trajectories of both control schemes are shown to analyse the stability of the systems. Moreover, a case study is exemplified to compare the performance of the two control strategies while responding to frequency disturbances. Finally, a time-domain simulation model of a 15 kW grid-connected converter is built in Matlab/Simulink to benchmark the performance of the GFL and GFM converters under different working conditions. The result reveals that the GFL converter may encounter some instabilities when applied in power electronic-based systems, while the GFM converter is more suitable for the weak power grid.","PeriodicalId":373546,"journal":{"name":"Power Electronics and Drives","volume":"27 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132325740","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: 2

Neural Network-Based Optimisation of Sinusoidal PWM Controller for VSI-Driven BLDC Motor 基于神经网络的vsi驱动无刷直流电机正弦PWM控制器优化

Power Electronics and Drives Pub Date : 2023-01-01 DOI: 10.2478/pead-2023-0018

George Owusu, J. Annan, S. Nunoo

{"title":"Neural Network-Based Optimisation of Sinusoidal PWM Controller for VSI-Driven BLDC Motor","authors":"George Owusu, J. Annan, S. Nunoo","doi":"10.2478/pead-2023-0018","DOIUrl":"https://doi.org/10.2478/pead-2023-0018","url":null,"abstract":"Abstract Although increasing the number of switches increases the switch losses, most designed controllers focus on controlling an inverter circuit with more than six switches. The paper aims to address this issue that arises in implementation of the voltage source inverter (VSI) for brushless DC (BLDC) motors. It optimises the sinusoidal pulse width modulation (PWM) controller, minimising total harmonic distortion (THD) while keeping the VSI’s circuit at six switches to avoid increased switching losses. This was achieved by applying an artificial neural network (ANN) to generate a signal, which combines with the already existing reference and carrier signals. The addition of the new signal to the existing signals contributed to generating more pulses compared with the conventional sinusoidal PWM. Simulink was used to design the system and analyse its performance with the conventional and neutral point clamped (NPC) VSI systems. Results indicated that the proposed system performs better when controlled with an LCC filter. Compared with the control experiments, its output waveform has the lowest THD value, which is 6.04%. The switching losses of all the systems were also computed. Results from the computation indicated that the proposed system is capable of reducing the switching losses by 0.6 kW compared with the NPC VSI brushless DC motor (BLDCM) system. BLDCM speed was tested across various conditions; the results are reported in Section 5.","PeriodicalId":373546,"journal":{"name":"Power Electronics and Drives","volume":"3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134376267","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

Nonlinear Optimal Control for a Gas Compressor Actuated by a Five-Phase Induction Motor 五相感应电机驱动气体压缩机的非线性最优控制

Power Electronics and Drives Pub Date : 2023-01-01 DOI: 10.2478/pead-2023-0014

G. Rigatos, M. Abbaszadeh, B. Sari, P. Siano

{"title":"Nonlinear Optimal Control for a Gas Compressor Actuated by a Five-Phase Induction Motor","authors":"G. Rigatos, M. Abbaszadeh, B. Sari, P. Siano","doi":"10.2478/pead-2023-0014","DOIUrl":"https://doi.org/10.2478/pead-2023-0014","url":null,"abstract":"Abstract The article proposes a nonlinear optimal control method for the dynamic model of a gas centrifugal compressor being actuated by a five-phase induction motor (5-phase IM). To achieve high torque and high power in the functioning of gas compressors, 5-phase IM appear to be advantageous in comparison to three-phase synchronous or asynchronous electric machines. The dynamic model of the integrated compression system, which comprises the gas compressor and the 5-phase IM, is first written in a nonlinear and multivariable state-space form. It is proven that the electrically driven gas-compression system is differentially flat. Next, this system is approximately linearised around a temporary operating point that is recomputed at each sampling interval. The linearisation is based on first-order Taylor series expansion and uses the computation of the Jacobian matrices of the state-space model of the integrated system. For the linearised state-space description of the compressor and 5-phase IM, a stabilising optimal (H-infinity) feedback controller is designed. This controller achieves a solution to the nonlinear optimal control problem of the compressor and 5-phase IM system under model uncertainty and external perturbations. The feedback gains of the controller are computed by solving an algebraic Riccati equation at each iteration of the control method. Lyapunov analysis is used to demonstrate global stability for the control loop. Additionally, the H-infinity Kalman filter is used as a robust state estimator, which allows for implementing sensorless control for the gas compression system.","PeriodicalId":373546,"journal":{"name":"Power Electronics and Drives","volume":"99 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117328389","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

Mechanical Vibrations Analysis in Direct Drive Using CWT with Complex Morlet Wavelet 基于复Morlet小波CWT的直接传动机械振动分析

Power Electronics and Drives Pub Date : 2023-01-01 DOI: 10.2478/pead-2023-0005

D. Łuczak

{"title":"Mechanical Vibrations Analysis in Direct Drive Using CWT with Complex Morlet Wavelet","authors":"D. Łuczak","doi":"10.2478/pead-2023-0005","DOIUrl":"https://doi.org/10.2478/pead-2023-0005","url":null,"abstract":"Abstract Modern industrial process and household equipment more often use direct drives. According to European policy, Industry 4.0 and new Industry 5.0 need to undertake the effort required to ensure a sustainable, human-centric, and resilient European industry. One of the main problems of rotating machines is mechanical vibrations that can limit the lifetime of the final product or the machine in which they are applied. Therefore, analysis of vibration in electrical drives is crucial for appropriate maintenance of the machine. The present article undertakes an analysis of vibration measured at the laboratory stand with multiple dominant frequencies in the range 50–500 Hz. The fast Fourier transform (FFT) gives information about the frequency component without its time localisation. While the solution made available by the short-time Fourier transform (STFT) is able to overcome the problem of FFT, it still has limitations, particularly in terms of there being a lacuna in time and frequency localisation; accordingly, the need is felt for other methods that can give a good localisation in time and frequency. In the article, the continuous wavelet transform (CWT) was investigated, which requires selection of the wavelet function (kernel of transformation). The complex Morlet wavelet was selected with description of its central frequency and bandwidth. CWT and STFT time-frequency localisation capabilities were compared to investigate data registered from the direct-drive laboratory stand. CWT gives better frequency localisation than STFT even for the same frequency resolution. Vibration frequencies with near-locations were separated in CWT and STFT joined them into one wide pick. To ensure a good extraction of frequency features in electric drive systems, the author, based on analysing the results of the present study, recommends that CWT with complex Morlet wavelet be used instead of STFT.","PeriodicalId":373546,"journal":{"name":"Power Electronics and Drives","volume":"140 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132400399","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: 4