{"title":"Research on Temperature Rise and Heat Dissipation of Wireless Power Transfer","authors":"Da Li, Xusheng Wu, Wei Gao, Jianxin Gao","doi":"10.1109/ICoPESA54515.2022.9754433","DOIUrl":"https://doi.org/10.1109/ICoPESA54515.2022.9754433","url":null,"abstract":"The magnetic coupler is a crucial part of the IPT system to achieve high-efficiency energy transmission. The heating loss of the magnetic coupler during operation causes the coil's temperature to rise, affecting the IPT system's operational stability. In this paper, the circuit and magnetic field model of the coupler are established. The heating mechanism of the coil, iron core and aluminum shielding plate in the coupler is studied. Furthermore, the temperature distribution of each component is given after running for 30 minutes. The temperature rise of each part of the coupler was measured, and the coil temperature was the highest. Through the thermal field simulation of the magnetic coupler, the temperature rise of each part of the magnetic coupler in the operation of the wireless power transmission system can be optimized.","PeriodicalId":142509,"journal":{"name":"2022 International Conference on Power Energy Systems and Applications (ICoPESA)","volume":"17 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-02-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116473690","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}
{"title":"Power MOSFET Junction Temperature Extraction Technology Based on Turn-off Energy Loss","authors":"Weiwei Wei, Guoqing Xu, Lingfeng Shao, H Zhao","doi":"10.1109/ICoPESA54515.2022.9754452","DOIUrl":"https://doi.org/10.1109/ICoPESA54515.2022.9754452","url":null,"abstract":"Power Metal Oxide Semiconductor Field Effect Transistor (MOSFET) has been widely used in small and medium capacity and high frequency power conversion systems. The reliability of Power MOSFET is closely related to junction temperature, but the research on the temperature sensitive electrical parameter (TSEP) method in power MOSFET junction temperature prediction is still immature. This paper proposes a method to extract the junction temperature of Power MOSFET by using the turn-off energy loss (Eoff), the correlation and sensitivity between Eoff and junction temperature from the perspective of semiconductor physics are analyzed. Further, from the perspective of experimental research, the sensitivity of various TSEPs to junction temperature extraction was analyzed and compared, which verified the superiority of Eoff for power MOSFET junction temperature extraction. Finally, Eoff is used as the TSEP to predict the junction temperature of Boost circuit, and its effectiveness is proved.","PeriodicalId":142509,"journal":{"name":"2022 International Conference on Power Energy Systems and Applications (ICoPESA)","volume":"47 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-02-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126421915","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}
{"title":"Fast Nonsingular Terminal Sliding-Mode with Disturbance Observer Control of PMSM Drive System","authors":"Lei Yuan, Liya Liu, Lu Xiong, Guoxuan Cui","doi":"10.1109/ICoPESA54515.2022.9754472","DOIUrl":"https://doi.org/10.1109/ICoPESA54515.2022.9754472","url":null,"abstract":"Traditional PI control of permanent magnet synchronous motor (PMSM) system cannot solve the contradiction between fastness and stability, and have poor anti-disturbance ability. In order to solve these problems, a fast nonsingular terminal sliding-mode (FNTSM) surface function is proposed based on the traditional nonsingular terminal sliding-mode (NTSM) control, and theoretical analysis proves that the FNTSM surface function has faster dynamic response and more finite time convergence. In addition, in order to deal with the inherent chattering phenomenon caused by the high sliding-mode switching gain, a FNTSM control with disturbance observer is designed. Through comparative experiment results with traditional PI control, it is proved that the FNTSM with disturbance observer method designed in the article improves the dynamic quality of the system and has better disturbance ability.","PeriodicalId":142509,"journal":{"name":"2022 International Conference on Power Energy Systems and Applications (ICoPESA)","volume":"12 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-02-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130314457","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}
Xiaoqiang Guo, Fan Wang, Chaozhe Wang, Guijun Ren, Lichong Wang, J. Guerrero
{"title":"Optimal Control of DC Capacitor Voltage for Cascaded Multilevel Converter","authors":"Xiaoqiang Guo, Fan Wang, Chaozhe Wang, Guijun Ren, Lichong Wang, J. Guerrero","doi":"10.1109/ICoPESA54515.2022.9754417","DOIUrl":"https://doi.org/10.1109/ICoPESA54515.2022.9754417","url":null,"abstract":"Cascaded H-bridge (CHB) multilevel converters have been widely used in industrial applications due to the low voltage stress, as well as high output power quality. Typically, the dc side of each module of cascaded converter requires a bulky capacitance, which increases the cost and size of the hardware system, and reduces the reliability. In order to solve the problem, aiming at reducing the dc capacitance, the mathematical model of the dc capacitance voltage of cascaded H-bridge multilevel is established. And then, a new optimal control system is proposed for dc capacitor voltage based on fixed integral filter algorithm. The test results verify the effectiveness of the proposed solution.","PeriodicalId":142509,"journal":{"name":"2022 International Conference on Power Energy Systems and Applications (ICoPESA)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-02-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131272314","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}
{"title":"Optimal Sizing of Renewables and Energy Storage System in Microgrids: The Quest for Economic Uncertainty Management","authors":"Peng Xie, Youwei Jia, Han Wang, Mengge Shi","doi":"10.1109/ICoPESA54515.2022.9754478","DOIUrl":"https://doi.org/10.1109/ICoPESA54515.2022.9754478","url":null,"abstract":"This paper proposes an explicit approach to optimal sizing of the integrated renewables and energy storage system in islanded microgrids, where the economic impacts of uncertainty (concerning stochastic nature and forecasted error uncertainty of the system) management are completely investigated. To quantify the uncertainty degrees at different time scales, two types of indices (i.e. electricity supply excess state probability index and electricity supply deficit state probability index) are proposed from the perspectives of system planning and operation. Moreover, the concerned problem is formulated as a bilevel mixed-inter nonlinear programming model to counterbalance the uncertainty and its induced cost at both planning and operation stages. Numerical simulations exhibit the merits of the proposed model and algorithm by analyzing the impact of various factors on sizing results.","PeriodicalId":142509,"journal":{"name":"2022 International Conference on Power Energy Systems and Applications (ICoPESA)","volume":"30 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-02-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134069587","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}
{"title":"Parameter Characterization of Power MOSFET Gate Oxide Degradation Based on Current Falling Time during Turn-off Process","authors":"Guoqing Xu, Shaohua Zhao, Weiwei Wei","doi":"10.1109/ICoPESA54515.2022.9754423","DOIUrl":"https://doi.org/10.1109/ICoPESA54515.2022.9754423","url":null,"abstract":"Power MOSFET is an indispensable key component in circuits and electronic systems. For power MOSFET, gate oxide degradation often occurs in various applications, so the research on gate oxide degradation has important theoretical significance for the reliability evaluation of electronic components. This paper proposes a power MOSFET gate oxide degradation parameter characterization technique based on the current fall time (tfi) during the turn-off process. Firstly, it introduces the failure mechanism and effects of gate oxide degradation of power MOSFET; secondly, analyzes the mechanism of gate oxide degradation based on the current drop time during turn-off; finally, an accelerated gate oxide degradation experiment was taken, and the results proved that the current fall time can effectively characterize the degradation state of the gate oxide layer of the power MOSFET, and verified the effectiveness of the proposed parameter characterization technique.","PeriodicalId":142509,"journal":{"name":"2022 International Conference on Power Energy Systems and Applications (ICoPESA)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-02-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129362727","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}
{"title":"ICoPESA 2022 Cover Page","authors":"","doi":"10.1109/icopesa54515.2022.9754395","DOIUrl":"https://doi.org/10.1109/icopesa54515.2022.9754395","url":null,"abstract":"","PeriodicalId":142509,"journal":{"name":"2022 International Conference on Power Energy Systems and Applications (ICoPESA)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-02-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131378541","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}
{"title":"A Rotor Flux Observer with Adaptive Interfering Signal Elimination for SPMSM Sensorless Control","authors":"Yang Ge","doi":"10.1109/ICoPESA54515.2022.9754448","DOIUrl":"https://doi.org/10.1109/ICoPESA54515.2022.9754448","url":null,"abstract":"In this paper, a rotor flux observer with adaptive interfering signal elimination for sensorless control of surface-mounted permanent magnet synchronous motor (SPMSM) is proposed. As we all known, the rotor flux of SPMSM can be obtained by integrator or closed-loop observer. But the interfering signals, i.e. ramp signal, dc offset and harmonics, always exist in obtained rotor flux due to unknown initial value, integral calculation, current detection errors and inverter nonlinearity. These interfering signals will greatly degrade the sensorless control performance. So an extended master-slave adaptive notch filter (EMS-ANF) with frequency adaptation is proposed to eliminate these interfering signals and extract the accurate fundamental wave of rotor flux. The theoretical analysis indicates that the EMS-ANF can eliminate the dc offset and specific harmonics in input, and avoid the ramp signal caused by integration. Then, based on EMS-ANF, a complete sensorless control scheme for SPMSM is designed. The experimental results under different conditions demonstrate the effectiveness and the superiority of the proposed method.","PeriodicalId":142509,"journal":{"name":"2022 International Conference on Power Energy Systems and Applications (ICoPESA)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-02-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128684090","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}
{"title":"Simultaneous Wireless Power and High-Rate Full-Duplex Data Transfer System Based on 4ASK","authors":"Shuo Chen, Wen Ding, Shuai Shi, Ruiming Hu","doi":"10.1109/ICoPESA54515.2022.9754474","DOIUrl":"https://doi.org/10.1109/ICoPESA54515.2022.9754474","url":null,"abstract":"A high-rate full-duplex simultaneous wireless power and data transfer (SWPDT) system based on quaternary amplitude-shift keying (4ASK) with double-sided LCC compensation network is proposed in this paper. Based on the frequency selection characteristics of the double-tuned filter, the forward and backward data transfer circuits are connected in series and parallel with the coupling coils, respectively, to achieve the full-duplex wireless data transfer. The principles of parameter tuning and topology of the SWPDT system are introduced in detail. Moreover, the 4ASK modulation and demodulation are adopted to enhance the data rate to 120kb/s. Finally, the effectiveness of the proposed method is verified by simulation results.","PeriodicalId":142509,"journal":{"name":"2022 International Conference on Power Energy Systems and Applications (ICoPESA)","volume":"93 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-02-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125978481","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}
Sun Ji, L. Jiajun, Liu Yue, Lin Haokun, M. Miao, Guo Chaolong
{"title":"A New Grid Connection Mode of Low Inertia Power System","authors":"Sun Ji, L. Jiajun, Liu Yue, Lin Haokun, M. Miao, Guo Chaolong","doi":"10.1109/ICoPESA54515.2022.9754435","DOIUrl":"https://doi.org/10.1109/ICoPESA54515.2022.9754435","url":null,"abstract":"With the increase of the proportion of photovoltaic, wind power and other new energy generation in the power grid and the large amount of electric energy sent through DC transmission, the proportion of synchronous generators in the power grid continues to decline, and more and more regional power grids have gradually become low inertia power systems. Aiming at the problems of poor controllability and low stability of grid connection of low inertia power system, a new method of grid connection between low inertia power system and main network is proposed. In this method, the grid connection composite device is applied to the grid connection of low inertia power system, so as to improve the grid connection speed of low inertia power system and realize grid connection, disconnection and tie-line power flow control of low inertia power system; in order to improve the stability of the frequency response process when the grid connected composite device is applied to the low inertia scenario, the virtual synchronous machine is introduced into the receiving converter to reduce the frequency offset peak and change rate of the low inertia power system in the grid connected regulation process. Through modeling and Simulation in PSCAD/ EMTDC, it is verified that the grid connection composite device based on virtual synchronous machine can greatly improve the controllability and stability of grid connection of low inertia power system.","PeriodicalId":142509,"journal":{"name":"2022 International Conference on Power Energy Systems and Applications (ICoPESA)","volume":"11 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-02-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121959004","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}