Heqing Huang;Yuzhang Lin;Yifan Zhou;Yue Zhao;Peng Zhang;Lingling Fan
With the continual deployment of power-electronics-interfaced renewable energy resources, increasing privacy concerns due to deregulation of electricity markets, and the diversification of demand-side activities, traditional knowledge-based power system dynamic modeling methods are faced with unprecedented challenges. Data-driven modeling has been increasingly studied in recent years because of its lesser need for prior knowledge, higher capability of handling large-scale systems, and better adaptability to variations of system operating conditions. This paper discusses about the motivations and the generalized process of data-driven modeling, and provides a comprehensive overview of various state-of-the-art techniques and applications. It also comparatively presents the advantages and disadvantages of these methods and provides insight into outstanding challenges and possible research directions for the future.
{"title":"Data-driven modeling of power system dynamics: Challenges, state of the art, and future work","authors":"Heqing Huang;Yuzhang Lin;Yifan Zhou;Yue Zhao;Peng Zhang;Lingling Fan","doi":"10.23919/IEN.2023.0023","DOIUrl":"https://doi.org/10.23919/IEN.2023.0023","url":null,"abstract":"With the continual deployment of power-electronics-interfaced renewable energy resources, increasing privacy concerns due to deregulation of electricity markets, and the diversification of demand-side activities, traditional knowledge-based power system dynamic modeling methods are faced with unprecedented challenges. Data-driven modeling has been increasingly studied in recent years because of its lesser need for prior knowledge, higher capability of handling large-scale systems, and better adaptability to variations of system operating conditions. This paper discusses about the motivations and the generalized process of data-driven modeling, and provides a comprehensive overview of various state-of-the-art techniques and applications. It also comparatively presents the advantages and disadvantages of these methods and provides insight into outstanding challenges and possible research directions for the future.","PeriodicalId":100648,"journal":{"name":"iEnergy","volume":"2 3","pages":"200-221"},"PeriodicalIF":0.0,"publicationDate":"2023-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"71903499","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}
The third issue in 2023 of iEnergy comes, which published 12 papers, including 3 news and views, 3 highlights, 1 letter, 2 review articles, and 3 original research articles.
{"title":"Explore the positioning, connotation and characteristics of new-type power system","authors":"","doi":"10.23919/IEN.2023.0030","DOIUrl":"https://doi.org/10.23919/IEN.2023.0030","url":null,"abstract":"The third issue in 2023 of iEnergy comes, which published 12 papers, including 3 news and views, 3 highlights, 1 letter, 2 review articles, and 3 original research articles.","PeriodicalId":100648,"journal":{"name":"iEnergy","volume":"2 3","pages":"155-156"},"PeriodicalIF":0.0,"publicationDate":"2023-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"71903505","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}
The rapid expansion of renewable energy, electrified transportation and advanced electromagnetic power systems requires electronic devices that can operate stably at harsh temperatures (e.g., 150 to 250 °C). However, as one of the critical components of electronic devices and power systems, film capacitors can currently only operate at temperatures below 105 °C because conventional polymer dielectric materials suffer from high conduction loss at high temperature and high electric field, resulting in severe heat accumulation and thermal runaway of film capacitors.
{"title":"High-temperature dielectric polymers with tailored structural units","authors":"Yao Zhou;Qing Wang","doi":"10.23919/IEN.2023.0031","DOIUrl":"https://doi.org/10.23919/IEN.2023.0031","url":null,"abstract":"The rapid expansion of renewable energy, electrified transportation and advanced electromagnetic power systems requires electronic devices that can operate stably at harsh temperatures (e.g., 150 to 250 °C). However, as one of the critical components of electronic devices and power systems, film capacitors can currently only operate at temperatures below 105 °C because conventional polymer dielectric materials suffer from high conduction loss at high temperature and high electric field, resulting in severe heat accumulation and thermal runaway of film capacitors.","PeriodicalId":100648,"journal":{"name":"iEnergy","volume":"2 3","pages":"162-162"},"PeriodicalIF":0.0,"publicationDate":"2023-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"71903429","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}
To improve the safety of electric vehicles and battery energy storage systems, early prediction of thermal runaway (TR) is of great significance. This work proposes a novel method for early warning and short-term prediction of the TR. To give warning of TR long time in advance, a variety of battery models are established to extract key features, such as Pauta feature and Shannon entropy of voltage deviation, and then local outlier factor algorithm is used for feature fusion to detect abnormal cells. For the short-term pre-diction, the predefined threshold and variation rates are used. By measuring the real-time signals, such as voltage and temperature, their variation rates are calculated, based on which TR can be predicted exactly. The real data including TR from an electric vehicle are used to verify the method that it can give a warning on TR long time before it happens up to 74 days. This is remarkable for providing replacement recommendations for abnormal cells. It can also predict the occurrence of TR 33 seconds in advance to ensure the safe use of batteries.
{"title":"A novel thermal runaway warning method of lithium-ion batteries","authors":"Rui Xiong;Chenxu Wang;Fengchun Sun","doi":"10.23919/IEN.2023.0029","DOIUrl":"https://doi.org/10.23919/IEN.2023.0029","url":null,"abstract":"To improve the safety of electric vehicles and battery energy storage systems, early prediction of thermal runaway (TR) is of great significance. This work proposes a novel method for early warning and short-term prediction of the TR. To give warning of TR long time in advance, a variety of battery models are established to extract key features, such as Pauta feature and Shannon entropy of voltage deviation, and then local outlier factor algorithm is used for feature fusion to detect abnormal cells. For the short-term pre-diction, the predefined threshold and variation rates are used. By measuring the real-time signals, such as voltage and temperature, their variation rates are calculated, based on which TR can be predicted exactly. The real data including TR from an electric vehicle are used to verify the method that it can give a warning on TR long time before it happens up to 74 days. This is remarkable for providing replacement recommendations for abnormal cells. It can also predict the occurrence of TR 33 seconds in advance to ensure the safe use of batteries.","PeriodicalId":100648,"journal":{"name":"iEnergy","volume":"2 3","pages":"165-171"},"PeriodicalIF":0.0,"publicationDate":"2023-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"71903497","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}
In June 2023, the State Council executive meeting proposed the development of an integrated industrial ecosystem, namely, “Vehicle-Energy-Road-Cloud,” indicating a new direction for the next development of new energy vehicles. I would like to discuss three important points regarding the introduction of “Vehicle- Energy-Road-Cloud” and necessity of integrated industrial ecosystem of “Vehicle-Energy-Road-Cloud.”
{"title":"“Vehicle-Energy-Road-Cloud” integration to promote China's economic transformation and upgrade","authors":"Minggao Ouyang","doi":"10.23919/IEN.2023.0028","DOIUrl":"https://doi.org/10.23919/IEN.2023.0028","url":null,"abstract":"In June 2023, the State Council executive meeting proposed the development of an integrated industrial ecosystem, namely, “Vehicle-Energy-Road-Cloud,” indicating a new direction for the next development of new energy vehicles. I would like to discuss three important points regarding the introduction of “Vehicle- Energy-Road-Cloud” and necessity of integrated industrial ecosystem of “Vehicle-Energy-Road-Cloud.”","PeriodicalId":100648,"journal":{"name":"iEnergy","volume":"2 3","pages":"161-161"},"PeriodicalIF":0.0,"publicationDate":"2023-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"71903495","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}
New semiconductor materials offer several advantages for modern power systems, including low switching and conduction losses, excellent thermal conduction of a die, and high operation temperature. Avionics is one of the main beneficiaries of the progress in power devices, as it enables more compact and lighter converters for future More Electrical Aircraft. However, these advancements also come with new challenges that must be addressed to avoid potentially dangerous situations and fully utilize the capabilities of fast SiC MOSFETs. One such challenge is the high drain voltage rate during the switching process, which leads to a significant injection of current into the gate circuit (crosstalk effect). This increased current injection increases the risk of shoot-through conduction and thermal runaway. Although preventive measures are well-known, they offer limited protection in the case of parallel MOSFET connections. Therefore, this paper considers crosstalk features for parallel MOSFET connections, such as parasitic inductance of gate driver trace and gate voltage distribution. A special model is proposed to predict the magnitude of induced gate voltage under different conditions considering the nonlinear behavior of the MOSFET reverse capacitance. A new clamp circuit with an individual low-inductance path for each parallel switch is also proposed to suppress the consequences of crosstalk. The modified circuit operates independently from the main gate driver circuit; therefore, it does not change the switching time and electromagnetic interference pattern of the inverter. The efficiency of the new gate driver is confirmed through simulation and experimental results.
{"title":"A gate driver for parallel connected MOSFETs with crosstalk suppression","authors":"Yury Mikhaylov;Giampaolo Buticchi;Michael Galea","doi":"10.23919/IEN.2023.0024","DOIUrl":"https://doi.org/10.23919/IEN.2023.0024","url":null,"abstract":"New semiconductor materials offer several advantages for modern power systems, including low switching and conduction losses, excellent thermal conduction of a die, and high operation temperature. Avionics is one of the main beneficiaries of the progress in power devices, as it enables more compact and lighter converters for future More Electrical Aircraft. However, these advancements also come with new challenges that must be addressed to avoid potentially dangerous situations and fully utilize the capabilities of fast SiC MOSFETs. One such challenge is the high drain voltage rate during the switching process, which leads to a significant injection of current into the gate circuit (crosstalk effect). This increased current injection increases the risk of shoot-through conduction and thermal runaway. Although preventive measures are well-known, they offer limited protection in the case of parallel MOSFET connections. Therefore, this paper considers crosstalk features for parallel MOSFET connections, such as parasitic inductance of gate driver trace and gate voltage distribution. A special model is proposed to predict the magnitude of induced gate voltage under different conditions considering the nonlinear behavior of the MOSFET reverse capacitance. A new clamp circuit with an individual low-inductance path for each parallel switch is also proposed to suppress the consequences of crosstalk. The modified circuit operates independently from the main gate driver circuit; therefore, it does not change the switching time and electromagnetic interference pattern of the inverter. The efficiency of the new gate driver is confirmed through simulation and experimental results.","PeriodicalId":100648,"journal":{"name":"iEnergy","volume":"2 3","pages":"240-250"},"PeriodicalIF":0.0,"publicationDate":"2023-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"71903502","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}
Recently, the Industrial Energy Efficiency Conference 2023 was held at Beijing West Suburb Hotel(see the figure). Zhi Hui, the secretary-general of the China Association of Industrial Energy Saving and Clean Production, pointed out at the conference that as China enters a new stage of high-quality development, industrial energy saving and efficiency improvement needs to shift to low-carbon energy, systematic whole-process energy conservation, and refined management.
{"title":"Boost industrial energy efficiency, Leading the way for industrial development","authors":"Hao Wu;Xiaobao Zhang","doi":"10.23919/IEN.2023.0025","DOIUrl":"https://doi.org/10.23919/IEN.2023.0025","url":null,"abstract":"Recently, the Industrial Energy Efficiency Conference 2023 was held at Beijing West Suburb Hotel(see the figure). Zhi Hui, the secretary-general of the China Association of Industrial Energy Saving and Clean Production, pointed out at the conference that as China enters a new stage of high-quality development, industrial energy saving and efficiency improvement needs to shift to low-carbon energy, systematic whole-process energy conservation, and refined management.","PeriodicalId":100648,"journal":{"name":"iEnergy","volume":"2 3","pages":"157-158"},"PeriodicalIF":0.0,"publicationDate":"2023-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"71903427","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}
With the integration of a voltage source converter (VSC), having variable internal voltages and source impedance, in a microgrid with high resistance to reactance ratio of short lines, angle-based transient stability techniques may find limitations. Under such a situation, the Lyapunov function can be a viable option for transient stability assessment (TSA) of such a VSC-interfaced microgrid. However, the determination of the Lyapunov function with the classical method is very challenging for a microgrid with converter controller dynamics. To overcome such challenges, this paper develops a physics-informed, Lyapunov function-based TSA framework for VSC-interfaced microgrids. The method uses the physics involved and the initial and boundary conditions of the system in learning the Lyapunov functions. This method is tested and validated under faults, droop-coefficient changes, generator outages, and load shedding on a small grid-connected microgrid and the CIGRE microgrid.
{"title":"Physics-informed transient stability assessment of microgrids","authors":"Priyanka Mishra;Peng Zhang","doi":"10.23919/IEN.2023.0022","DOIUrl":"https://doi.org/10.23919/IEN.2023.0022","url":null,"abstract":"With the integration of a voltage source converter (VSC), having variable internal voltages and source impedance, in a microgrid with high resistance to reactance ratio of short lines, angle-based transient stability techniques may find limitations. Under such a situation, the Lyapunov function can be a viable option for transient stability assessment (TSA) of such a VSC-interfaced microgrid. However, the determination of the Lyapunov function with the classical method is very challenging for a microgrid with converter controller dynamics. To overcome such challenges, this paper develops a physics-informed, Lyapunov function-based TSA framework for VSC-interfaced microgrids. The method uses the physics involved and the initial and boundary conditions of the system in learning the Lyapunov functions. This method is tested and validated under faults, droop-coefficient changes, generator outages, and load shedding on a small grid-connected microgrid and the CIGRE microgrid.","PeriodicalId":100648,"journal":{"name":"iEnergy","volume":"2 3","pages":"231-239"},"PeriodicalIF":0.0,"publicationDate":"2023-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"71903501","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}
With extraordinary advantages including fast switching transient processes, high operational temperature and great thermal conduction, new semiconductor materials provide a fascinating prospect for the future development of power electronic equipment. However, several challenges must be addressed before the power electronics goes comprehensive and mature. One such challenge faced by SiC MOSFET is the crosstalk effect, which refers to the current with a significant magnitude injecting into the gate circuit, when the devices meet high drain-source voltage in the fast-switching process. Although negative gate voltage is considered to be a rule of thumb to cover the problem, we still lack solutions for parallel SiC MOSFETs.
{"title":"Parallel arrangement of MOSFETs, effective suppression of crosstalk: A new gate driver topology","authors":"Jinpeng Wu","doi":"10.23919/IEN.2023.0032","DOIUrl":"https://doi.org/10.23919/IEN.2023.0032","url":null,"abstract":"With extraordinary advantages including fast switching transient processes, high operational temperature and great thermal conduction, new semiconductor materials provide a fascinating prospect for the future development of power electronic equipment. However, several challenges must be addressed before the power electronics goes comprehensive and mature. One such challenge faced by SiC MOSFET is the crosstalk effect, which refers to the current with a significant magnitude injecting into the gate circuit, when the devices meet high drain-source voltage in the fast-switching process. Although negative gate voltage is considered to be a rule of thumb to cover the problem, we still lack solutions for parallel SiC MOSFETs.","PeriodicalId":100648,"journal":{"name":"iEnergy","volume":"2 3","pages":"163-163"},"PeriodicalIF":0.0,"publicationDate":"2023-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"71903494","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}
Transportation accounts for about 20% of the global greenhouse gas emissions, which is a major source of greenhouse gases. Road transportation accounts for three quarters of this share, while aviation and maritime transportation each account for 11% (see Figure 1). For improving the air quality and thus to achieve long term environmental sustainability, transportation electrification is an important area with the electricity used being generated from renewable energy sources. In 2022, there were 26 million electric cars on globally on the roads. Half of all electric vehicles (EVs) on the road were in China, according to the International Energy Agency's latest analysis of EV trends. In order to achieve net zero emissions from road vehicles by 2050, nearly 2 billion vehicles have to be either battery EVs or fuel cell based vehicles.
{"title":"Current and future trends in electrification of road and air transportation","authors":"Kaushik Rajashekara","doi":"10.23919/IEN.2023.0027","DOIUrl":"https://doi.org/10.23919/IEN.2023.0027","url":null,"abstract":"Transportation accounts for about 20% of the global greenhouse gas emissions, which is a major source of greenhouse gases. Road transportation accounts for three quarters of this share, while aviation and maritime transportation each account for 11% (see Figure 1). For improving the air quality and thus to achieve long term environmental sustainability, transportation electrification is an important area with the electricity used being generated from renewable energy sources. In 2022, there were 26 million electric cars on globally on the roads. Half of all electric vehicles (EVs) on the road were in China, according to the International Energy Agency's latest analysis of EV trends. In order to achieve net zero emissions from road vehicles by 2050, nearly 2 billion vehicles have to be either battery EVs or fuel cell based vehicles.","PeriodicalId":100648,"journal":{"name":"iEnergy","volume":"2 3","pages":"159-160"},"PeriodicalIF":0.0,"publicationDate":"2023-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"71903504","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}
京公网安备 11010802042870号
京ICP备2023020795号-1
扫码关注我们
求助内容：
应助结果提醒方式：