Power Electronics and Drives最新文献_第6页

VSC-Based DSTATCOM for PQ Improvement: A Deep-Learning Approach 基于vsc的PQ改进DSTATCOM:一种深度学习方法

Power Electronics and Drives Pub Date : 2022-01-01 DOI: 10.2478/pead-2022-0013

M. Mangaraj, Jogeswara Sabat, Ajit Kumar Barisal, K. S. Ramaiah, G. E. Rao

{"title":"VSC-Based DSTATCOM for PQ Improvement: A Deep-Learning Approach","authors":"M. Mangaraj, Jogeswara Sabat, Ajit Kumar Barisal, K. S. Ramaiah, G. E. Rao","doi":"10.2478/pead-2022-0013","DOIUrl":"https://doi.org/10.2478/pead-2022-0013","url":null,"abstract":"Abstract With the rapid advancement of the technology, deep learning supported voltage source converter (VSC)-based distributed static compensator (DSTATCOM) for power quality (PQ) improvement has attracted significant interest due to its high accuracy. In this paper, six subnets are structured for the proposed deep learning approach (DL-Approach) algorithm by using its own mathematical equations. Three subnets for active and the other three for reactive weight components are used to extract the fundamental component of the load current. These updated weights are utilised for the generation of the reference source currents for VSC. Hysteresis current controllers (HCCs) are employed in each phase in which generated switching signal patterns need to be carried out from both predicted reference source current and actual source current. As a result, the proposed technique achieves better dynamic performance, less computation burden and better estimation speed. Consequently, the results were obtained for different loading conditions using MATLAB/Simulink software. Finally, the feasibility was effective as per the benchmark of IEEE guidelines in response to harmonics curtailment, power factor (p.f) improvement, load balancing and voltage regulation.","PeriodicalId":373546,"journal":{"name":"Power Electronics and Drives","volume":"38 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123036951","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: 1

Control of a Four-wire Hybrid Prosumer Converter for Balancing Utility Grids 平衡公用事业电网的四线混合产消转换器控制

Power Electronics and Drives Pub Date : 2021-01-01 DOI: 10.2478/pead-2021-0001

Kwaśny Łukasz, Dariusz Zieliński

引用次数: 3

Grid-Tied Neutral Point Clamped based Centralised Photovoltaic Inverter with Improved DC Link Voltage Balancing and Harmonic Minimisation Control 基于并网中性点箝位的集中式光伏逆变器及其改进的直流链路电压平衡和谐波最小化控制

Power Electronics and Drives Pub Date : 2021-01-01 DOI: 10.2478/pead-2021-0011

Supratik Bhowmick, D. Mukherjee, S. Maiti, C. Chakraborty

{"title":"Grid-Tied Neutral Point Clamped based Centralised Photovoltaic Inverter with Improved DC Link Voltage Balancing and Harmonic Minimisation Control","authors":"Supratik Bhowmick, D. Mukherjee, S. Maiti, C. Chakraborty","doi":"10.2478/pead-2021-0011","DOIUrl":"https://doi.org/10.2478/pead-2021-0011","url":null,"abstract":"Abstract This paper proposes an improved space vector pulse width modulation (SVPWM) based DC link voltage balancing control of a three-phase three-level neutral point clamped (NPC) centralised inverter supplying the generated power from photo voltaic (PV) array to a three-phase utility grid. Two possible schemes have been developed based on the power conversion stage between PV array and the utility grid namely, two-stage (three-level boost converter three-phase three-level NPC inverter) and single-stage (three-phase three-level NPC inverter alone). The comparison between these two schemes has been thoroughly discussed in terms of the control strategies employed, power loss analysis and efficiency. The performance of the centralised inverter under different modes of operation has been investigated by developing the required control strategies for smooth operation. Using the proposed control strategy, the centralised inverter can be operated as a static synchronous compensator (STATCOM) during night time, if needed. The power loss incurred in the power-electronic converters has been analysed for constant and also for variable ambient temperature. The effectiveness of the centralised inverter as an active filter (AF) has also been verified when a three-phase non-linear load is considered in the system.","PeriodicalId":373546,"journal":{"name":"Power Electronics and Drives","volume":"31 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128185854","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: 1

Investigation on Control Strategies for a Single-Phase Photovoltaic Inverter Using PSCAD/EMTDC Software 基于PSCAD/EMTDC软件的单相光伏逆变器控制策略研究

Power Electronics and Drives Pub Date : 2021-01-01 DOI: 10.2478/pead-2021-0006

C. Henz, Fabiano Perin Gasparin

{"title":"Investigation on Control Strategies for a Single-Phase Photovoltaic Inverter Using PSCAD/EMTDC Software","authors":"C. Henz, Fabiano Perin Gasparin","doi":"10.2478/pead-2021-0006","DOIUrl":"https://doi.org/10.2478/pead-2021-0006","url":null,"abstract":"Abstract In the last decades, electric power produced through photovoltaic conversion has been increasing because of the need to reduce fossil fuel burning. Recently, photovoltaic systems have become more competitive and their role in the renewable energies market share is steadily gaining in importance. Improvements in the power electronics employed in the DC/AC conversion are topics of interest in the quest for more efficient and eventually reduced-cost inverters. The goal of this paper is to perform an investigation of control strategies and propose a topology for a single-phase DC/AC converter for photovoltaic arrays using the simulation software Power System Computer Aided Design/ Electromagnetic Transient Design and Control (PSCAD/EMTDC). The circuit proposed in this paper employs an isolating transformer to a grid-connected photovoltaic inverter. The control strategy proposed uses the instantaneous reactive power theory (p–q theory) and phase-locked loop (PLL). The p-q theory uses two virtual axes in the Park Transformation, which provide to the control system a good dynamic response, accuracy, and decoupling between the control and power system. Computer simulations using the electromagnetic transient software PSCAD show the efficiency of the proposed strategy for a single-phase inverter. The control strategy and topology are quite simple and easy to implement in the future using a Digital Signal Processor (DSP). The results provide insights into new power electronics solutions, which can improve the efficiency and efficacy of the current available in DC/AC converters for photovoltaic systems.","PeriodicalId":373546,"journal":{"name":"Power Electronics and Drives","volume":"43 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126537753","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: 1

Control and Operation of a Hybrid Actuator for Maglev Applications 磁悬浮应用中混合驱动器的控制与运行

Power Electronics and Drives Pub Date : 2021-01-01 DOI: 10.2478/pead-2021-0015

J. Rickwärtz, J. Kolb, Marius Franck, K. Hameyer

{"title":"Control and Operation of a Hybrid Actuator for Maglev Applications","authors":"J. Rickwärtz, J. Kolb, Marius Franck, K. Hameyer","doi":"10.2478/pead-2021-0015","DOIUrl":"https://doi.org/10.2478/pead-2021-0015","url":null,"abstract":"Abstract The hybrid actuator presented in this article is meant to enable stationary and slow dynamic levitation in Maglev applications. The term ‘hybrid’ refers to the design of the actuator, which is a combination of permanent magnets (PM) and electromagnets. This paper presents an analytically computable control algorithm for the said hybrid actuator. The theory of magnetic circuits is summarized shortly and used to derive a cascaded control loop consisting of an inner current controller and an outer air gap controller. Since the uncontrolled hybrid actuator is inherently unstable, the system has to be stabilized. By introducing a PID-controller into the air gap control loop, the unstable behaviour of the uncontrolled system is changed into the system behaviour of a damped harmonic oscillator. The advantage of this approach is that the computed controller parameters of the PID-controller can easily be adjusted, so the system behaviour of damping and eigenfrequency can be selected within a certain range. For the execution of the control algorithm, a microcontroller (MCU) is used and for precise air gap measurement, an eddy current sensor is installed. Finally, the behaviour of the current- and air gap controller is discussed for different measurement results and the adjustable system behaviour of the damped harmonic oscillator is presented.","PeriodicalId":373546,"journal":{"name":"Power Electronics and Drives","volume":"12 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122834446","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

Initial Rotor Position Detection of Induction Machines Using Feedforward Sensorless Saliency Separation 基于前馈无传感器显著性分离的感应电机转子初始位置检测

Power Electronics and Drives Pub Date : 2021-01-01 DOI: 10.2478/pead-2021-0020

E. R. Montero, M. Vogelsberger, T. Wolbank

{"title":"Initial Rotor Position Detection of Induction Machines Using Feedforward Sensorless Saliency Separation","authors":"E. R. Montero, M. Vogelsberger, T. Wolbank","doi":"10.2478/pead-2021-0020","DOIUrl":"https://doi.org/10.2478/pead-2021-0020","url":null,"abstract":"Abstract The use of induction machine spatial saliencies for sensorless vector control in the proximity of zero electrical frequency has been extensively researched over the last few decades. A robust technique to extract machine saliencies is called voltage step excitation, and it computes a saliency phasor out of phase current derivatives resulting from specific voltage steps generated by the inverter switching. Within the saliency phasor, all machine saliencies appear superposed. For some machine constructions, multiple saliencies are present, containing information about the spatial, magnetic and geometric state of the machine. Due to its direct relation with the rotor angle and its high accuracy, rotor slotting saliency is often chosen as the sensorless control signal. In order to exclusively access rotor slotting, saliency separation needs to be carried out, with the goal of eliminating all non-control saliencies from the saliency phasor. In this research, feedforward harmonic compensation based on look-up tables (LUTs) is chosen. The idea is to estimate each saliency in relation to amplitude and phase shift once, store such information in a torque-dependent LUT and use it for feedforward compensation. Yet, several saliencies are linked to the rotor position and, thus, the stored phase shift in the LUT is fixed to a defined rotor position at which the saliency estimation was performed. For the feedforward compensation to work during each sensorless start-up, an initial rotor slot detection must be carried out. This paper presents a technique to estimate initial rotor angle based only on the inherent characteristics of the induction machine multi-saliencies and an iterative feedforward compensation process that requires no extra resources and only a few PWM (Pulse Width Modulation) periods to achieve initial slot rotor angle. Experimental results measured at two different test benches prove the high accuracy of the method.","PeriodicalId":373546,"journal":{"name":"Power Electronics and Drives","volume":"27 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124582426","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

Sliding Mode Control of Hybrid Renewable Energy System Operating in Grid Connected and Stand-Alone Mode 并网单机混合可再生能源系统的滑模控制

Power Electronics and Drives Pub Date : 2021-01-01 DOI: 10.2478/pead-2021-0009

Ridha Benadli, Marwen Bjaoui, B. Khiari, A. Sellami

{"title":"Sliding Mode Control of Hybrid Renewable Energy System Operating in Grid Connected and Stand-Alone Mode","authors":"Ridha Benadli, Marwen Bjaoui, B. Khiari, A. Sellami","doi":"10.2478/pead-2021-0009","DOIUrl":"https://doi.org/10.2478/pead-2021-0009","url":null,"abstract":"Abstract This paper studies innovative application of sliding mode control (SMC) for a Hybrid Renewable Energy System (HRES) in grid-connected and autonomous modes of operation. The considered HRES includes a photovoltaic (PV), wind turbine (WT) based on a Permanent Magnet Synchronous Generator (PMSG). The PV generator is coupled to the common DC bus via a DC/DC converter. The latter is controlled by an MPPT algorithm based on the Adaptive Perturbation and Observation Algorithm Method (APOAM) to search the optimum working of this source. A SMC is utilized to manage the PV voltage to achieve the Maximum Power Point (MPP) by altering the obligation duty cycle. The battery interfaced by a bidirectional buck-boost DC/DC converter can be charged or discharged depending on the production situation. On the one hand, the wind turbine conversion chain is equipped with a PMSG and a rectifier controlled to regulate the operating point of the wind turbine to its optimum value. During a Stand-Alone Mode (SAM) operation, the Voltage Source Converter (VSC) was used for controlling the output voltage in terms of amplitude and frequency delivered to the AC load. However, in Grid-Connected Mode (GCM) operation, the VSC was adapted to control the electrical parameters of the grid. To better appreciate the advantages of the proposed SMC approach, we have proposed a series of comparative tests with the conventional PI control in the operating modes GC and SA and under different scenarios. The proposed control strategy has undeniable advantages in terms of control performance and very low total harmonic distortion THD value compared with the conventional PI control. Finally, It is concluded that the proposed approach improves the quality and provides a stable operation of the HRES.","PeriodicalId":373546,"journal":{"name":"Power Electronics and Drives","volume":"8 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116766186","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: 5

An Adaptive Control Strategy for a Low-Ripple Boost Converter in BLDC Motor Speed Control 低纹波升压变换器在无刷直流电机速度控制中的自适应控制策略

Power Electronics and Drives Pub Date : 2021-01-01 DOI: 10.2478/pead-2021-0019

Haifeng Wang, Haili Zhang

引用次数: 1

Artificial Neural Network-Based Gain-Scheduled State Feedback Speed Controller for Synchronous Reluctance Motor 基于人工神经网络的同步磁阻电机增益计划状态反馈速度控制器

Power Electronics and Drives Pub Date : 2021-01-01 DOI: 10.2478/pead-2021-0017

T. Tarczewski, Ł. Niewiara, L. Grzesiak

引用次数: 2

Control Strategy of Parallel Systems with Efficiency Optimisation in Switched Reluctance Generators 开关磁阻发电机并联系统效率优化控制策略

Power Electronics and Drives Pub Date : 2021-01-01 DOI: 10.2478/pead-2021-0003

X. Zan, Hang Lin, Guanqun Xu, Tiejun Zhao, Yinsheng Gong

{"title":"Control Strategy of Parallel Systems with Efficiency Optimisation in Switched Reluctance Generators","authors":"X. Zan, Hang Lin, Guanqun Xu, Tiejun Zhao, Yinsheng Gong","doi":"10.2478/pead-2021-0003","DOIUrl":"https://doi.org/10.2478/pead-2021-0003","url":null,"abstract":"Abstract To solve motor heating and life shortening of parallel switched reluctance generator (SRG) induced by uneven output currents due to different external characteristics, we generally adopt current sharing control (CSC) to make each parallel generator undertake large load currents on average to improve the reliability of parallel power generation system. However, the method usually causes additional loss of power because it does not consider the efficiency characteristics of each parallel generator. Therefore, with the efficiency expression for the parallel system of SRG established and analysed, the control strategy based on differential evolution (DE) algorithm is proposed as a mechanism by which to enhance generating capacity and reliability of multi-machine power generation from the perspective of efficiency optimisation. We re-adjust the reference current of each parallel generator to transform the working point of each generator and implement the efficiency optimisation of parallel system. The performance of the proposed control method is evaluated in detail by the simulation and experiment, and comparison with traditional CSC is carried out as well.","PeriodicalId":373546,"journal":{"name":"Power Electronics and Drives","volume":"102 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116453690","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