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PWM AC chopper control schemes for energy saving of single-phase induction motors 单相感应电动机的PWM交流斩波节能控制方案
2012 10th International Power & Energy Conference (IPEC) Pub Date : 2012-11-01 DOI: 10.1109/ASSCC.2012.6523243
Veera Thanyaphirak, V. Kinnares, A. Kunakorn
{"title":"PWM AC chopper control schemes for energy saving of single-phase induction motors","authors":"Veera Thanyaphirak, V. Kinnares, A. Kunakorn","doi":"10.1109/ASSCC.2012.6523243","DOIUrl":"https://doi.org/10.1109/ASSCC.2012.6523243","url":null,"abstract":"This paper presents control schemes for energy saving of a capacitor start and run type single-phase induction motor using a PWM AC Chopper to adjust the appropriate motor voltage under various load levels. MATLAB/Simulink is used for the simulation. The main winding stator current is used to feedback for minus with the appropriate current obtained from the multiple of the auxiliary winding stator current and the appropriate constant. Then, the error is sent to a PI Controller. The output of the PI controller will be compared with a carrier to generate PWM signals for controlling all bidirectional switches of the single-phase AC chopper. With the proposed scheme under any motor load level, the motor will always operate at the rated speed, which allows for high efficiency and energy saving. The motor energy saving is 43.97%, particularly at light load.","PeriodicalId":341348,"journal":{"name":"2012 10th International Power & Energy Conference (IPEC)","volume":"28 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114553596","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: 10
Fuzzy embedded PI control algorithm and angle experiments of switched reluctance machine 开关磁阻电机的模糊嵌入式PI控制算法及角度实验
2012 10th International Power & Energy Conference (IPEC) Pub Date : 2012-11-01 DOI: 10.1109/ASSCC.2012.6523290
Chao Liu, Jun Liu, Hao Chen, Y. Huo
{"title":"Fuzzy embedded PI control algorithm and angle experiments of switched reluctance machine","authors":"Chao Liu, Jun Liu, Hao Chen, Y. Huo","doi":"10.1109/ASSCC.2012.6523290","DOIUrl":"https://doi.org/10.1109/ASSCC.2012.6523290","url":null,"abstract":"In recent years, switched reluctance motor (SRM) as a rapidly developed new motor has been widely applied in various fields such as household appliances, electric vehicles, aviation industry; its construction is rugged and simple. In this paper, the controller was designed and correlative experiments were made. First the hardware design and software design of the controller were introduced. The core circuit of controller was based on the MCU MC9S12DG128, and the control algorithm was analyzed. Then the speed experiment under different control algorithm was made. The current waveform and speed waveform of the experiment were gathered and analyzed. The results of experiments show that the designed control algorithm meet the system performance requirements. The angle experiments was well analyzed and can be referred by the future works.","PeriodicalId":341348,"journal":{"name":"2012 10th International Power & Energy Conference (IPEC)","volume":"64 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127885085","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
Influential parameters in lightning current passing a grounding system of high voltage substation 雷电电流通过高压变电站接地系统的影响参数
2012 10th International Power & Energy Conference (IPEC) Pub Date : 2012-11-01 DOI: 10.1109/ASSCC.2012.6523341
Chuong Ho Van Nhat, Sang Trinh Minh
{"title":"Influential parameters in lightning current passing a grounding system of high voltage substation","authors":"Chuong Ho Van Nhat, Sang Trinh Minh","doi":"10.1109/ASSCC.2012.6523341","DOIUrl":"https://doi.org/10.1109/ASSCC.2012.6523341","url":null,"abstract":"The voltage amplitude and its distribution along the grounding grid are decided by current injecting a grounding system of high voltage substation [1]-[2]. Therefore, the short circuit current passing this grounding system of substation is always cared by the designers. [8]-[9] introduced a new method to calculate the current passing grounding system of high voltage substation when lightning strikes on the grounding wire of transmission line at any point regardless of the influential parameters. This paper studied clearly the influence of the parameters of “grounding wire-electric pole system” and from this, the dangerous zone of high voltage substation and some other interesting results were received.","PeriodicalId":341348,"journal":{"name":"2012 10th International Power & Energy Conference (IPEC)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131365538","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
An overview of lithium-ion batteries for electric vehicles 电动汽车用锂离子电池概述
2012 10th International Power & Energy Conference (IPEC) Pub Date : 2012-11-01 DOI: 10.1109/ASSCC.2012.6523269
Xiaopeng Chen, W. Shen, Thanh Tu Vo, Z. Cao, A. Kapoor
{"title":"An overview of lithium-ion batteries for electric vehicles","authors":"Xiaopeng Chen, W. Shen, Thanh Tu Vo, Z. Cao, A. Kapoor","doi":"10.1109/ASSCC.2012.6523269","DOIUrl":"https://doi.org/10.1109/ASSCC.2012.6523269","url":null,"abstract":"Environmental issues triggered by emissions from conventional vehicles have accelerated the adaptation of electric vehicles (EVs) for urban transportation. The most favorable battery technology which can closely fulfill the minimum goals of the United States Advanced Battery Consortium (USABC) for commercialisation of EVs are the lithium-ion batteries. Although there are various types of lithium-ion batteries have been widely used to power the EVs, the performance characteristics of these batteries are not clearly specified in a more comparable way. Therefore, this paper reviews four types of commonly used lithium-ion batteries and based on their specifications analysis to access capabilities and suitability as the energy source in EVs. Results can be used as benchmarks for selecting lithium-ion batteries for battery management system (BMS) design in EVs.","PeriodicalId":341348,"journal":{"name":"2012 10th International Power & Energy Conference (IPEC)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130988719","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: 105
Parameters determination for a.c. voltage and current waveforms: IEC 61083-4 TDG Waveform analyses 交流电压和电流波形的参数测定:IEC 61083-4 TDG波形分析
2012 10th International Power & Energy Conference (IPEC) Pub Date : 2012-11-01 DOI: 10.1109/ASSCC.2012.6523332
Shuji Sato, Y. Saikawa, Y. Okamoto, S. Nishimura, H. Shimizu
{"title":"Parameters determination for a.c. voltage and current waveforms: IEC 61083-4 TDG Waveform analyses","authors":"Shuji Sato, Y. Saikawa, Y. Okamoto, S. Nishimura, H. Shimizu","doi":"10.1109/ASSCC.2012.6523332","DOIUrl":"https://doi.org/10.1109/ASSCC.2012.6523332","url":null,"abstract":"IEC 61083-4, which is to be completed in 2013, defines requirements for a software which analyses a.c. and d.c. waveform parameters distilled from digitally measured data. TDG attached to the 61083-4 simulates digitally recorded data for typical waveforms observed in daily measurement. Any acceptable software can determine waveform parameters within a given margin specified in IEC 61083-4. Authors could successfully analyse all the a.c. waveforms generated by the TDG (Test Data Generator) using techniques, 1) FFT after an interpolation for steady a.c. and 2) curve fitting for short-term a.c.. The latter involves the least square method and a set of nonlinear equations. The distilled parameters are within the specified margins proposed in IEC 61083-4. The details of the algorithm are to be clarified in the paper. Also mentioned in the paper is a proposed TDG's controversial behaviour in which a current-zero instant is shifted due to a discrete sampling interval (note: IEC 61083-4 is presently a draft and has to be rectified on such problem).","PeriodicalId":341348,"journal":{"name":"2012 10th International Power & Energy Conference (IPEC)","volume":"16 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122304043","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
Dynamic study of a battery change-over scheme of a windfarm containing dual BESS 双BESS风电场电池转换方案的动力学研究
2012 10th International Power & Energy Conference (IPEC) Pub Date : 2012-11-01 DOI: 10.1109/ASSCC.2012.6523268
D. Yao, S. S. Choi, K. Tseng, T. Lie
{"title":"Dynamic study of a battery change-over scheme of a windfarm containing dual BESS","authors":"D. Yao, S. S. Choi, K. Tseng, T. Lie","doi":"10.1109/ASSCC.2012.6523268","DOIUrl":"https://doi.org/10.1109/ASSCC.2012.6523268","url":null,"abstract":"The wind farm-dual-battery energy storage systems (BESS) described in [1] is studied in greater detail for those instances when the battery banks change-over. The primary design objective of the wind farm-BESS scheme is to realize the dispatchability of wind generation. The scheme requires two BESS modules to inter-change between charging-discharging modes. A new power flows control strategy is designed to cater for the battery switching-over operation while practical constraints on the charging-discharging of the BESS are considered. A dynamic study is included to illustrate the strategy.","PeriodicalId":341348,"journal":{"name":"2012 10th International Power & Energy Conference (IPEC)","volume":"39 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115829572","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
Calculation of lightning-induced voltages on overhead power lines using the RBF-FDTD method 用RBF-FDTD法计算架空电力线雷击电压
2012 10th International Power & Energy Conference (IPEC) Pub Date : 2012-11-01 DOI: 10.1109/ASSCC.2012.6523331
Lan Anh P. Vu, P. Vu, V. Ho
{"title":"Calculation of lightning-induced voltages on overhead power lines using the RBF-FDTD method","authors":"Lan Anh P. Vu, P. Vu, V. Ho","doi":"10.1109/ASSCC.2012.6523331","DOIUrl":"https://doi.org/10.1109/ASSCC.2012.6523331","url":null,"abstract":"The Finite-Difference Time-Domain (FDTD) solutions of lightning-induced voltages due to a lightning return stroke on a nearby overhead power line are proposed by Agrawal et al. [4] and Paolone et al. [5]. In this paper, we propose a new numerical method to solve field-to-transmission line coupling equations of transmission lines (TL). This new method is developed from the MQ-FDM [11] and called the Radial Basis Function (RBF) - FDTD method. The RBF is used to find the FD approximations of spatial and temporal derivatives. In this paper, the influence of the shape parameter of the RBF on lightning-induced voltages is also presented. In particular, with choosing the `optimal' shape parameter, the result shows that the RBF-FDTD solution is better than the FDTD solution compared with that by lightninginduced overvoltage (LIOV) code. Finally, our proposed method is very suitable for studying the solution of telegrapher's or EM coupling equations of all transmission and distribution lines in EMC problems with higher accuracy.","PeriodicalId":341348,"journal":{"name":"2012 10th International Power & Energy Conference (IPEC)","volume":"8 1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126117212","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
Autonomous appliance scheduling based on time of use probabilities and load clustering 基于时间使用概率和负荷聚类的自主设备调度
2012 10th International Power & Energy Conference (IPEC) Pub Date : 2012-11-01 DOI: 10.1109/ASSCC.2012.6523236
C. Adika, Lingfeng Wang
{"title":"Autonomous appliance scheduling based on time of use probabilities and load clustering","authors":"C. Adika, Lingfeng Wang","doi":"10.1109/ASSCC.2012.6523236","DOIUrl":"https://doi.org/10.1109/ASSCC.2012.6523236","url":null,"abstract":"The ultimate smart grid will operate autonomously by implementing intelligent decision-making schemes with as little consumer intervention as possible. Its success will be heavily reliant on accurate real-time information exchange between the grid and the consumers. Customers will be expected to submit energy demand schedules to actively monitor energy price signals and participate in energy bids and respond to energy management signals in real time. This kind of smart grid-user interaction will be overwhelming and can result in consumer apathy. There is therefore a need to develop intelligent systems that will execute all these tasks without the active involvement of the consumer. This paper proposes such an approach. Demand response scheme by smart scheduling of household electrical appliances is presented. The scheduler calculates individual device hourly probabilities that it uses to automatically generate optimal schedules. An optimal schedule is considered to be the one that meets the consumer's deadlines while ensuring energy cost savings to the customer.","PeriodicalId":341348,"journal":{"name":"2012 10th International Power & Energy Conference (IPEC)","volume":"14 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125001689","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
Design of purchasing costs analysis system for grid companies 电网公司采购成本分析系统的设计
2012 10th International Power & Energy Conference (IPEC) Pub Date : 2012-11-01 DOI: 10.1109/ASSCC.2012.6523281
Yanmin Guo, Ping Shao, Junhong Guo, JingPeng Cai
{"title":"Design of purchasing costs analysis system for grid companies","authors":"Yanmin Guo, Ping Shao, Junhong Guo, JingPeng Cai","doi":"10.1109/ASSCC.2012.6523281","DOIUrl":"https://doi.org/10.1109/ASSCC.2012.6523281","url":null,"abstract":"In order to master the structure of electric purchasing costs, plenty of purchasing data stored in the database of Power Market Operation System are analyzed, which distributed in all kinds of applications originally. Conventional stat method, factor analysis method and marginal analysis method are used to analyze and exploit historical data. On this basis, Web pages are designed to show analysis results with multi-dimensions, multi-caliber and multi-time accumulative type. According to flexible Combination of table, curve, pie chart and bar chart, pages will explain the structure of purchasing costs, the factors that affect the total cost and the average price and the marginal income of the transaction from different angles. All of these provide the conditions for the further optimizing purchasing costs of power grid companies.","PeriodicalId":341348,"journal":{"name":"2012 10th International Power & Energy Conference (IPEC)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126255511","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
Hybrid dynamic modeling of the evaporator for the development of the advanced optimal control strategies 为蒸发器的混合动力学建模开发了先进的最优控制策略
2012 10th International Power & Energy Conference (IPEC) Pub Date : 2012-11-01 DOI: 10.1109/ASSCC.2012.6523316
Xudong Ding, P. Duan, W. Cai, Jia Yan
{"title":"Hybrid dynamic modeling of the evaporator for the development of the advanced optimal control strategies","authors":"Xudong Ding, P. Duan, W. Cai, Jia Yan","doi":"10.1109/ASSCC.2012.6523316","DOIUrl":"https://doi.org/10.1109/ASSCC.2012.6523316","url":null,"abstract":"A hybrid model of evaporator used in air conditioning and refrigeration systems is proposed to present the dynamic behavior of the two phase flow evaporators. The model is formulated as process fundamental governing equations based on the energy and mass balance, and thermodynamic principles, while some constants and some variables which vary very little as time goes on, such as cross-sectional areas, mean void fraction, the derivative of the saturation enthalpy with respect to pressure, etc., are lumped into several unknown parameters, which are obtained by identifying the experimental data using nonlinear least squares method. The method takes advantages of both physical and empirical modeling approaches and can accurately predict the transient behaviors in real-time, which can significantly reduce the computational burden. The greatest merits of this model are the order of the model is very low and all the state variables can easily be measured, which are very suitable for model based controller design. The model validation studies on an experimental system show that the complete dynamic model developed in Matlab/Simulink can well predict the system dynamics. The developed models will have wide applications not only in controller design, but also in transient behavior analysis.","PeriodicalId":341348,"journal":{"name":"2012 10th International Power & Energy Conference (IPEC)","volume":"48 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129826086","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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