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Current control of nine-switch inverter using integrated current sensors 集成电流传感器的九开关逆变器电流控制
2010 4th International Power Engineering and Optimization Conference (PEOCO) Pub Date : 2010-06-23 DOI: 10.1109/PEOCO.2010.5559228
S. Dehghan, M. Mohamadian, A. Yazdian
{"title":"Current control of nine-switch inverter using integrated current sensors","authors":"S. Dehghan, M. Mohamadian, A. Yazdian","doi":"10.1109/PEOCO.2010.5559228","DOIUrl":"https://doi.org/10.1109/PEOCO.2010.5559228","url":null,"abstract":"Recently nine-switch inverter (NSI) has been presented as a dual-output inverter with only nine semiconductor switches. This inverter can be used to control two ac loads such as electric motors, independently. While external current sensors are usually in closed loop control of inverter, this paper proposes using power semiconductor switches that include integrated pilot current sensors as mid switches of nine-switch inverter. In this manner, using only three integrated current sensors, both outputs of nine-switch inverter can be controlled. Since integrated current sensors can not cover current in each phase during the whole fundamental cycle, a reconstruction algorithm is proposed for calculation of non-measurable currents. Performance of the proposed method is verified by simulation results.","PeriodicalId":379868,"journal":{"name":"2010 4th International Power Engineering and Optimization Conference (PEOCO)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-06-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131313038","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
Implementation of DG for loss minimization and voltage profile in distribution system 在配电系统中实施DG以实现损耗最小化和电压分布
2010 4th International Power Engineering and Optimization Conference (PEOCO) Pub Date : 2010-06-23 DOI: 10.1109/PEOCO.2010.5559251
S. Rahim, T. Rahman, I. Musirin, M. H. Hussain, M. Sulaiman, O. Aliman, Z. M. Isa
{"title":"Implementation of DG for loss minimization and voltage profile in distribution system","authors":"S. Rahim, T. Rahman, I. Musirin, M. H. Hussain, M. Sulaiman, O. Aliman, Z. M. Isa","doi":"10.1109/PEOCO.2010.5559251","DOIUrl":"https://doi.org/10.1109/PEOCO.2010.5559251","url":null,"abstract":"This paper presents the effects of DG on the performance of an existing distribution network in terms of voltage stability, loss minimization and voltage profile. In this study, a new program was developed based on Artificial Immune System optimization technique in order to determine the optimal size of distributed generator. Various loading conditions were tested in order to evaluate the effectiveness of the proposed technique in determining the optimal size of the distributed generator. The suitable location of distributed generator is identified based on the results from voltage stability index. The proposed technique was tested on IEEE Reliability Test systems namely the IEEE 69-bus and the program was developed using the MATLAB programming software.","PeriodicalId":379868,"journal":{"name":"2010 4th International Power Engineering and Optimization Conference (PEOCO)","volume":"21 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-06-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121492684","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: 21
Capacity Benefit Margin (CBM) assessment incorporating tie-line reliability 结合连接线可靠性的运力效益边际(CBM)评估
2010 4th International Power Engineering and Optimization Conference (PEOCO) Pub Date : 2010-06-23 DOI: 10.1109/PEOCO.2010.5559242
N. Rahman, Muhammad Murtadha Othman, I. Musirin, A. Mohamed, A. Hussain
{"title":"Capacity Benefit Margin (CBM) assessment incorporating tie-line reliability","authors":"N. Rahman, Muhammad Murtadha Othman, I. Musirin, A. Mohamed, A. Hussain","doi":"10.1109/PEOCO.2010.5559242","DOIUrl":"https://doi.org/10.1109/PEOCO.2010.5559242","url":null,"abstract":"Capacity Benefit Margin (CBM) plays an important role in available transfer capability (ATC) computation. CBM is a transmission capability margin reserved by load serving entities to meet the generation reliability requirements. In recent years, there are several methods developed to compute the CBM. However, the methodologies do not consider the reliability of an interconnected system in the CBM determination. This paper presents the computation of CBM considering the reliability of an interconnected system. It is important to consider the reliability of an interconnected system in the CBM determination because the interconnected system is used as a medium in transferring the power to an area in order to overcome the deficiency of generation reliability. The modified IEEE 24-bus Reliability Test System (RTS) is used to demonstrate the effectiveness of the proposed method in determining the CBM considering reliability of an interconnected system.","PeriodicalId":379868,"journal":{"name":"2010 4th International Power Engineering and Optimization Conference (PEOCO)","volume":"2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-06-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115843091","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: 7
Energy & electricity consumption analysis of Malaysian power demand 马来西亚电力需求的能源和电力消耗分析
2010 4th International Power Engineering and Optimization Conference (PEOCO) Pub Date : 2010-06-23 DOI: 10.1109/PEOCO.2010.5559171
A. Khamis, Annas Alamshah, Azhar Ahmad, Azhan Ab. Rahman, M. Hairi
{"title":"Energy & electricity consumption analysis of Malaysian power demand","authors":"A. Khamis, Annas Alamshah, Azhar Ahmad, Azhan Ab. Rahman, M. Hairi","doi":"10.1109/PEOCO.2010.5559171","DOIUrl":"https://doi.org/10.1109/PEOCO.2010.5559171","url":null,"abstract":"Demands for electricity in Malaysia are expected to rise between five to six per cent for the next two to three years in line with increasing urbanization and rapid industrialization in the country. Malaysia is currently enjoying a healthy generating reserve capacity in the electricity sector, with an additional increase of 4,780 megawatt (MW) new generating capacity. Based on actual ratio/percentage of power generated compare to power consumed, it is found out that the percentage is not in line with demand and for some cases the power generated is more than the demand that needed. Therefore there is a need to do a research in order to tackle this problem. For the generation side based from the research there is always an excessive power generated that has been use for power reserve. This reserve power should be use wisely instead of being reserve only. In this study case a new idea will be proposed to make a full use of this extra reserve and produce the best method of managing excessive power generated without even affecting the capacity of power in reserve. Sample of power demand and generation data were taken from Tenaga National Berhad (TNB) for the purpose of comparison of data. Part of the studies include study on the model of load curve and comparison with the previous 2 years of data. This research will also focuses on the effect of high peak load in total power demand. The results were analyzed and will be discussed based on literature and previous results obtained by other research. The significant of the project can be a modeling guide line to the power generation design of other researcher to cater for the problem that occurs.","PeriodicalId":379868,"journal":{"name":"2010 4th International Power Engineering and Optimization Conference (PEOCO)","volume":"54 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-06-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114724818","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
Harmonic content as the indicator of transformer core saturation 谐波含量作为变压器铁心饱和的指标
2010 4th International Power Engineering and Optimization Conference (PEOCO) Pub Date : 2010-06-23 DOI: 10.1109/PEOCO.2010.5559192
I. Daut, S. Hasan, S. Taib, R. Chan, M. Irwanto
{"title":"Harmonic content as the indicator of transformer core saturation","authors":"I. Daut, S. Hasan, S. Taib, R. Chan, M. Irwanto","doi":"10.1109/PEOCO.2010.5559192","DOIUrl":"https://doi.org/10.1109/PEOCO.2010.5559192","url":null,"abstract":"The paper proposes a measurement method for obtaining the parameters needed to calculate a reliable indicator of the state of transformer core saturation. The major nonlinear effects in transformer core are saturation, eddy current and hysteresis. Saturation is the predominant effect in power transformers, followed by eddy current and hysteresis effects. In saturation, a transformer core act as a source of current generating harmonics, some of which will flow directly toward the primary and secondary windings. The method is based on harmonic content evaluated of the transformer no-load current with high magnetic flux density subjected. The investigation is done on single phase model core type transformer. The transformer is connected to variable voltage variable frequency (VVVF) source and the investigation is done on the same flux density. The result has been compared with normal frequency supply (50 Hz). The results show that the harmonic content increase significantly when high magnetic flux densities are injected.","PeriodicalId":379868,"journal":{"name":"2010 4th International Power Engineering and Optimization Conference (PEOCO)","volume":"35 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-06-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123969681","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
Comparison of fourier & wavelet transform methods for transmission line fault classification 输电线路故障分类中傅里叶与小波变换方法的比较
2010 4th International Power Engineering and Optimization Conference (PEOCO) Pub Date : 2010-06-23 DOI: 10.1109/PEOCO.2010.5559232
A. Abdollahi, S. Seyedtabaii
{"title":"Comparison of fourier & wavelet transform methods for transmission line fault classification","authors":"A. Abdollahi, S. Seyedtabaii","doi":"10.1109/PEOCO.2010.5559232","DOIUrl":"https://doi.org/10.1109/PEOCO.2010.5559232","url":null,"abstract":"Nowadays, power supply has become a business asset. The quality and reliability of power system needs to be maintained in order to obtain optimum performance. Therefore, it is extremely important that transmission line faults from various sources to be identified accurately, reliably and be corrected as soon as possible. In this paper, a new technique is discussed by which avoiding noise in fault detection in high voltage transmission lines is achieved. Later, a comparative study of the performance of Fourier transform and wavelet transform based methods combined with protective relaying pattern classifier algorithm Neural Network for classification of faults is presented. A new classification method is proposed for decreasing training time and dimensions of NN. The proposed algorithms are based on Fourier transform analysis of fundamental frequency of current signals in the event of a short circuit. Similar analysis is performed on transient current signals using multi-resolution Haar wavelet transform, and comparative characteristics of the two methods are discussed.","PeriodicalId":379868,"journal":{"name":"2010 4th International Power Engineering and Optimization Conference (PEOCO)","volume":"142 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-06-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123222126","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: 31
Optimal load shedding approach in distribution systems for improved voltage stability 配电系统中提高电压稳定性的最佳减载方法
2010 4th International Power Engineering and Optimization Conference (PEOCO) Pub Date : 2010-06-23 DOI: 10.1109/PEOCO.2010.5559241
Mohammad H. Moradi, M. Abedini
{"title":"Optimal load shedding approach in distribution systems for improved voltage stability","authors":"Mohammad H. Moradi, M. Abedini","doi":"10.1109/PEOCO.2010.5559241","DOIUrl":"https://doi.org/10.1109/PEOCO.2010.5559241","url":null,"abstract":"In this paper an optimal load shedding approach for electrical distribution network with and without Distributed Generation (DG) to improve the voltage stability is presented. Finding effective location of load shedding for identifying weak buses is very important so that, voltage stability index is used for identifying the sensitive buses to the voltage collapse. The objective is to minimize the sum of curtailed load, voltage deviation index (VDI) and maximization of voltage magnitudes of weak buses with in frame-work of system operational and security constraints. The final optimization problem is then solved by genetic algorithm (GA). A detailed performance analysis is carried out on 33 bus system to demonstrate the effectiveness of the proposed methodology.","PeriodicalId":379868,"journal":{"name":"2010 4th International Power Engineering and Optimization Conference (PEOCO)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-06-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129450421","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: 21
Core loss measurements of three phase AC induction motor 三相交流感应电动机铁芯损耗测量
2010 4th International Power Engineering and Optimization Conference (PEOCO) Pub Date : 2010-06-23 DOI: 10.1109/PEOCO.2010.5559201
I. Daut, K. Anayet, N. Gomesh, M. Asri, Syatirah, M. Muzhar
{"title":"Core loss measurements of three phase AC induction motor","authors":"I. Daut, K. Anayet, N. Gomesh, M. Asri, Syatirah, M. Muzhar","doi":"10.1109/PEOCO.2010.5559201","DOIUrl":"https://doi.org/10.1109/PEOCO.2010.5559201","url":null,"abstract":"Core loss measurements at the field level for AC induction motor have been described. The standard requirements is the conventional no-load test to measure the “rotational losses” (sum of the core, friction & windage losses) and stator copper loss. Based on the no-load test several parameters such as the no load resistance, reactance, impedances as well as the per-phase magnetizing current and per-phase core loss current is obtained. Practical setup for loss measurements presented in this study.","PeriodicalId":379868,"journal":{"name":"2010 4th International Power Engineering and Optimization Conference (PEOCO)","volume":"314 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-06-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129580460","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
A robust adaptive predictive load frequency controller to compensate for model mismatch 鲁棒自适应预测负荷频率控制器补偿模型失配
2010 4th International Power Engineering and Optimization Conference (PEOCO) Pub Date : 2010-06-23 DOI: 10.1109/PEOCO.2010.5559181
S. F. Siraj, M. Muin, K. M. Nor, S. Rahim, M. Mohamad, E. C. Mid
{"title":"A robust adaptive predictive load frequency controller to compensate for model mismatch","authors":"S. F. Siraj, M. Muin, K. M. Nor, S. Rahim, M. Mohamad, E. C. Mid","doi":"10.1109/PEOCO.2010.5559181","DOIUrl":"https://doi.org/10.1109/PEOCO.2010.5559181","url":null,"abstract":"The paper describes the design and implementation of a self-tuning load frequency controller (LFC) of a power system based on the adaptive generalized predictive (AGP) controller. The application of predictive control in power system control is considered due to its ability to handle disturbances and un modeled dynamics often encountered in interconnected power system environments. The system dynamics is modeled and linearized around its operating point to represent plant in the controller auto-regressive integrated moving average (CARIMA) form suitable for prediction with the presence of disturbance. Simulation results show that the controller exhibits robustness in handling both problems with proper tuning of its parameters, especially when compared to the normal adaptive control methods of minimum variance and pole assignment.","PeriodicalId":379868,"journal":{"name":"2010 4th International Power Engineering and Optimization Conference (PEOCO)","volume":"14 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-06-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125276546","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
Study of Fuzzy and PI controller for Permanent-Magnet Brushless DC motor drive 永磁无刷直流电动机驱动的模糊与PI控制器研究
2010 4th International Power Engineering and Optimization Conference (PEOCO) Pub Date : 2010-06-23 DOI: 10.1109/PEOCO.2010.5559256
T. C. Siong, B. Ismail, M. F. Mohammed, M. Tajuddin, S. Rafidah, A. Rahim, Z. M. Isa
{"title":"Study of Fuzzy and PI controller for Permanent-Magnet Brushless DC motor drive","authors":"T. C. Siong, B. Ismail, M. F. Mohammed, M. Tajuddin, S. Rafidah, A. Rahim, Z. M. Isa","doi":"10.1109/PEOCO.2010.5559256","DOIUrl":"https://doi.org/10.1109/PEOCO.2010.5559256","url":null,"abstract":"This paper presents the study and analysis of the fuzzy and PI control system applying to Permanent-Magnet Brushless DC (BLDC) motor. The most commonly used controller for dc motor controller system is Proportional-Integral (PI) controller. However, the PI controller has some disadvantages such as: high starting overshoot, sensitivity to controller gains and sluggish response due to sudden load disturbance. Further, fuzzy control is proposed and the performance of fuzzy controller was compared with PI controller. Simulation result are presented and analyzed for both fuzzy and PI controllers. It is observed that fuzzy logic based controlled give better responses than traditional PI controller for the speed control of dc motor drives.","PeriodicalId":379868,"journal":{"name":"2010 4th International Power Engineering and Optimization Conference (PEOCO)","volume":"59 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-06-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128365717","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: 39
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