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Determination of Worst-Case Capacitor-Switching Overvoltage of MRT System Using Genetic Algorithms 基于遗传算法的地铁系统电容开关最坏情况过电压确定
Electric Machines and Power Systems Pub Date : 1999-10-01 DOI: 10.1080/073135699268632
C. S. Chang, Jiang Wenquan
{"title":"Determination of Worst-Case Capacitor-Switching Overvoltage of MRT System Using Genetic Algorithms","authors":"C. S. Chang, Jiang Wenquan","doi":"10.1080/073135699268632","DOIUrl":"https://doi.org/10.1080/073135699268632","url":null,"abstract":"This paper analyzes the worst-case DC transient voltages of mass rapid transit (MRT) systems due to utility-capacitor switching on AC supply systems. The various factors affecting this phenomenon are analyzed in detail using extensive EMTP (Electromagnetic Transients Program) simulations. These factors include the size and location of utility capacitor, point-on-wave switching angles on the three phases, and DC link parameters. In this paper, genetic algorithms (GAs) are applied to determine the worst-case DC overvoltage caused by nonsimultaneous energization of utility capacitor. The effectiveness of the proposed GA approach is verified by comparing results with traditional statistical approaches.","PeriodicalId":262115,"journal":{"name":"Electric Machines and Power Systems","volume":"19 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1999-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124151009","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: 3
Control of Single Phase Induction Motor Using Forced-Commutated Electronic Switches and Free-Wheeling Paths 采用强制换相电子开关和自由旋转路径控制单相感应电动机
Electric Machines and Power Systems Pub Date : 1999-10-01 DOI: 10.1080/073135699268669
M. A. Abdel-halim
{"title":"Control of Single Phase Induction Motor Using Forced-Commutated Electronic Switches and Free-Wheeling Paths","authors":"M. A. Abdel-halim","doi":"10.1080/073135699268669","DOIUrl":"https://doi.org/10.1080/073135699268669","url":null,"abstract":"Single phase induction motors show better performance and have less cost if they are controlled using electronic switches instead of mechanical switches. This paper suggests a semiconductor-based method to start the motor and to control the speed and the direction of rotation. This is achieved by feeding the two stator windings of a split-single-phase motor via two forced-commutated solid-state devices. Meanwhile, each winding is shunted by a free-wheeling path that is controlled as well by a forced-commutated solid-state device. Therefore high starting torques and low starting currents are realized. Speed control is easily achieved at higher motor efficiency, compared with the case of controlling the motor using forced-commutated electronic switches without free-wheeling paths. This paper computes detailed performance characteristics of the motor employing the suggested method. For this purpose, the motor is represented in the dqo reference frame. Then, the performance is described by a developed state s...","PeriodicalId":262115,"journal":{"name":"Electric Machines and Power Systems","volume":"78 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1999-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128695577","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: 3
Development of a Novel HVDC System Model for Control Design 一种用于控制设计的新型高压直流系统模型的开发
Electric Machines and Power Systems Pub Date : 1999-10-01 DOI: 10.1080/073135699268696
R. K. Pandey, A. Ghosh, Sachchidanand
{"title":"Development of a Novel HVDC System Model for Control Design","authors":"R. K. Pandey, A. Ghosh, Sachchidanand","doi":"10.1080/073135699268696","DOIUrl":"https://doi.org/10.1080/073135699268696","url":null,"abstract":"The operation of HVDC converters is discrete in nature. It is, therefore, proper to take into account the discrete behavior of converter operation while developing the system model for small signal stability analysis. This paper presents the development of such a system model, which also explicitly includes the effect of phase angle of respective AC bus voltages. A modular approach has been adopted for the formulation of complete state space system model. Utilizing the system model, the stability is examined in the controller parameter plane using eigenvalue analysis. The stability domains thus obtained are validated through detailed dynamic digital simulation.","PeriodicalId":262115,"journal":{"name":"Electric Machines and Power Systems","volume":"23 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1999-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126280287","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: 8
Evaluation of Steady-State and Transient Behavior of a MRAS Based Sensorless Rotor Flux Oriented Induction Machine in the Presence of Parameter Detuning 参数失谐情况下基于MRAS的无传感器转子磁通定向感应电机稳态和暂态行为评估
Electric Machines and Power Systems Pub Date : 1999-10-01 DOI: 10.1080/073135699268641
M. Wang, E. Levi
{"title":"Evaluation of Steady-State and Transient Behavior of a MRAS Based Sensorless Rotor Flux Oriented Induction Machine in the Presence of Parameter Detuning","authors":"M. Wang, E. Levi","doi":"10.1080/073135699268641","DOIUrl":"https://doi.org/10.1080/073135699268641","url":null,"abstract":"One of the most frequently applied methods of speed-sensorless rotor flux-oriented control of induction machines relies on utilization of model reference adaptive system (MRAS)-based speed estimation. Accuracy of this method heavily depends on correct setting of the machine parameters within the estimator and the controller. The paper discusses sensorless indirect feed-forward current-fed rotor flux-orientedinduction motor drive in whichspeed estimation is performed utilizing rotor flux-based MRAS scheme. A study is conducted in order to evaluate speed estimation error and other detuning effects in both steady-state and transient operation of the drive caused by incorrect setting and/or variation of parameters. Theoretical principles behind the steady-state analysis are at first developed, and steady-state detuning effects are then evaluated. Incorrect setting of magnetizing inductance, stator resistance variation, rotor resistance variation, and leakage inductance variation are encompassed by steady-stat...","PeriodicalId":262115,"journal":{"name":"Electric Machines and Power Systems","volume":"39 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1999-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127104337","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: 16
Computer-Aided Modeling and Simulation of Active Power Filters 有源电力滤波器的计算机辅助建模与仿真
Electric Machines and Power Systems Pub Date : 1999-10-01 DOI: 10.1080/073135699268687
Bhim Singh, A. Chandra, K. Al-haddad
{"title":"Computer-Aided Modeling and Simulation of Active Power Filters","authors":"Bhim Singh, A. Chandra, K. Al-haddad","doi":"10.1080/073135699268687","DOIUrl":"https://doi.org/10.1080/073135699268687","url":null,"abstract":"This paper deals with the computer-based modeling and simulation of active power filters (APFs) employed for harmonic and reactive power compensation of nonlinear loads. Two configurations of active shunt APF are presented using time domain analysis for compensation of three-wire (three-phase) and four-wire (three-phase with neutral) systems. For the sake of generality and simplicity, PI (Proportional-Integral) controllers have been proposed for the control of APF. The usefulness of the simulation approach to APF application is demonstrated and discussed in detail. The developed computer package is expected to be a powerful tool to give a better insight to the APF designers.","PeriodicalId":262115,"journal":{"name":"Electric Machines and Power Systems","volume":"61 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1999-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132143060","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: 88
An Integrated Approach to Economic Emission Load Dispatching Using Neural Network and Goal-Attainment Methods 基于神经网络和目标达成法的排放负荷经济调度综合方法
Electric Machines and Power Systems Pub Date : 1999-09-01 DOI: 10.1080/073135699268731
P. K. Hota, R. Chakrabarti, P. K. Chattopadhyay
{"title":"An Integrated Approach to Economic Emission Load Dispatching Using Neural Network and Goal-Attainment Methods","authors":"P. K. Hota, R. Chakrabarti, P. K. Chattopadhyay","doi":"10.1080/073135699268731","DOIUrl":"https://doi.org/10.1080/073135699268731","url":null,"abstract":"This paper presents an integrated approach comprising artificial neural network (ANN) and goal-attainment (GA) methods to economic emission load dispatching (EELD) in power system operation and scheduling phases. The GA method, which is one of the most powerful tools for multiobjective optimization problems, is quantitatively performed to grasp trade-off relations between the two conflicting objectives (economy and emission impact) in the training set creation phase. Finally, a radial basis function ANN is trained by the orthogonal least squares learning algorithm to reach the optimal generations. The ANN models so developed have been tested to solve EELD problem on 6-bus and 71-bus power systems. The test results demonstrate that the proposed approach is capable of obtaining well-coordinated optimal solutions suitable both in accuracy and speed while allowing flexibility in the operation of the generators.","PeriodicalId":262115,"journal":{"name":"Electric Machines and Power Systems","volume":"24 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1999-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130686267","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: 12
Centralized Control of Transformer Tap Changing for Voltage Stability Enhancement 集中控制变压器分接变换以增强电压稳定性
Electric Machines and Power Systems Pub Date : 1999-09-01 DOI: 10.1080/073135699268704
C. S. Chang, J. S. Huang
{"title":"Centralized Control of Transformer Tap Changing for Voltage Stability Enhancement","authors":"C. S. Chang, J. S. Huang","doi":"10.1080/073135699268704","DOIUrl":"https://doi.org/10.1080/073135699268704","url":null,"abstract":"This paper presents a novel centralized control scheme for load tap-changing transformers. To implement the coordinated tap changing, by taking into account interaction among different transformers, the developed scheme employs successive linearization and variable-structure control techniques. The designed mechanism can be a partial implementation of the full scheme. With appropriate simplification, only the local information, associated with the participating transformers, is needed to perform the control. In preventing the voltage instability, brought about by lack of coordination among tap changers, the developed scheme is superior to conventional decentralized methods.","PeriodicalId":262115,"journal":{"name":"Electric Machines and Power Systems","volume":"27 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1999-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129423470","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: 9
Coordinated Design of Power System Stabilizers and Static Phase Shifters Using Genetic Algorithm 基于遗传算法的电力系统稳定器与静态移相器协调设计
Electric Machines and Power Systems Pub Date : 1999-09-01 DOI: 10.1080/073135699268722
M. Abido
{"title":"Coordinated Design of Power System Stabilizers and Static Phase Shifters Using Genetic Algorithm","authors":"M. Abido","doi":"10.1080/073135699268722","DOIUrl":"https://doi.org/10.1080/073135699268722","url":null,"abstract":"Coordinated design of a power system stabilizer (PSS) and a static phase shifter (SPS) using genetic algorithm (GA) is investigated in this paper. The design problem of PSS and SPS controller is formulated as an optimization problem. An eigenvalue-based objective function to increase the system damping is proposed. Then, GA is employed to search for optimal controller parameters. Different control schemes have been proposed and tested on a weakly connected power system with different disturbances, loading conditions, and parameter variations. It was observed that although the PSS enhances the power system stability, the SPS controller provides most of the damping and improves the voltage profile of the system. The nonlinear simulation results show the effectiveness and robustness of the proposed control schemes over a wide range of loading conditions and system parameter variations.","PeriodicalId":262115,"journal":{"name":"Electric Machines and Power Systems","volume":"7 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1999-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128603608","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: 3
Performance Analysis of 8/6-Pole Doubly Salient Permanent Magnet Motor 8/6极双凸极永磁电机性能分析
Electric Machines and Power Systems Pub Date : 1999-09-01 DOI: 10.1080/073135699268713
K. Chau, M. Cheng, C. Chan
{"title":"Performance Analysis of 8/6-Pole Doubly Salient Permanent Magnet Motor","authors":"K. Chau, M. Cheng, C. Chan","doi":"10.1080/073135699268713","DOIUrl":"https://doi.org/10.1080/073135699268713","url":null,"abstract":"In this paper, a new 8/6-pole doubly salient permanent magnet (DSPM) motor is proposed and analyzed. The key is to analytically derive the output power density of the DSPM motor in terms of the rotor-to-stator pole ratio. Hence, the analytical design, finite element analysis, and computer simulation of the proposed 8/6-pole DSPM motor are presented. Compared with the well-known 6/4-pole DSPM motor, the proposed 8/6-pole offers higher power density, wider speed range, less torque ripple, and less phase current magnitude.","PeriodicalId":262115,"journal":{"name":"Electric Machines and Power Systems","volume":"49 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1999-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114482743","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: 49
Coordinated Optimal Control for Power System Stability Enhancement 增强电力系统稳定性的协调最优控制
Electric Machines and Power Systems Pub Date : 1999-09-01 DOI: 10.1080/073135699268740
Guojie Li, T. Lie, G. Shrestha, K. Lo
{"title":"Coordinated Optimal Control for Power System Stability Enhancement","authors":"Guojie Li, T. Lie, G. Shrestha, K. Lo","doi":"10.1080/073135699268740","DOIUrl":"https://doi.org/10.1080/073135699268740","url":null,"abstract":"A linear optimal controller is designed to implement Variable Series Compensation (VSC) in transmission network of interconnected power systems. The proposed controller is used to dampen inter-area oscillations and enhance power system stability. The effectiveness of the linear optimal controller to properly control such a variable series reactance is demonstrated through mode shapes and digital simulation studies on a two-machine system. The digital simulation studies are conducted using a PSCAD/EMTDC software package. The mode shapes and simulation results show that the controller contributes significantly to the damping of inter-area oscillations and the power stability enhancement.","PeriodicalId":262115,"journal":{"name":"Electric Machines and Power Systems","volume":"117 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1999-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117325429","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
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