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Low-carbon Operation of Combined Heat and Power Integrated Plants Based on Solar-assisted Carbon Capture

Journal of Modern Power Systems and Clean Energy 2022年第5期10卷 1138-1151页

作者： Xusheng Guo Suhua Lou Yaowu Wu Yongcan Wang State Key Laboratory of Advanced Electromagnetic Engineering and Technology Huazhong University of Science and TechnologyWuhan 430074China State Grid Sichuan Electric Power Research Institute Chengdu 610041China

Accelerating the development of renewable energy and reducing CO_(2)emissions have become a general consensus and concerted action of all countries in the world. The electric power industry, especially thermal power industry, is the main source for fossil energy consumption and CO_(2)emissions. Since solvent-based post-combustion carbon capture technology would bring massive extra energy consumption, the application of solar-assisted carbon capture technology has attracted extensive attention. Due to the important role of coal-fired combined heat and power plants for serving residential and industrial heating districts, in this paper, the low-carbon operation benefits of combined heat and power integrated plants based on solar-assisted carbon capture(CHPIP-SACC) are fully evaluated in heat and power integrated energy system with a high proportion of wind power. Based on the selected integration scheme, a linear operation model of CHPIP-SACC is developed considering energy flow characteristics and thermal coupling interaction of its internal modules. From the perspective of system-level operation optimization, the day-ahead economic dispatch problem based on a mix-integer linear programming model is presented to evaluate the low-carbon benefits of CHPIP-SACC during annual operation simulation. The numerical simulations on a modified IEEE 39-bus system demonstrate the effectiveness of CHPIP-SACC for reducing CO_(2)emissions as well as increasing the downward flexibility. The impact of different solar field areas and unit prices of coal on the low-carbon operation benefits of CHPIP-SACC is studied in the section of sensitivity analysis.

关键词： Solar-assisted carbon capture CO_(2)emission reduction combined heat and power integrated plant heat and power integrated energy system wind power

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Synchronous Vibration Suppression of Magnetic Bearing Systems without Angular Sensors

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CES Transactions on Electrical Machines and Systems 2021年第1期5卷 70-77页

作者： Hongbo Sun Dong Jiang Jichang Yang State Key Laboratory of Advanced Electromagnetic Engineering and Technology Huazhong University of Science and TechnologyWuhan 430074China

Active Magnetic Bearing(AMB)levitates rotor by magnetic force without friction,and it can provide active control force to suppress vibration while *** of vibration suppressing methods need angular speed sensors to obtain rotating speed,but in many occasions,angular speed sensor is difficult to install or is difficult to guarantee *** paper proposed a vibration suppressing strategy without angular speed sensor based on generalized integrator and frequency locked loop(GI-FLL)and phase shift generalized integrator(PSGI).GI-FLL and high-pass filter estimate frequency from control current,PSGI is applied to generate compensating ***,model of AMB system expressed by transfer function is established and effect of centrifugal force is ***,principle and process of vibration suppressing strategy is *** of parameters are analyzed by root locus and bode *** results display the process of frequency estimation and performance of *** are carried on a test rig,results of simulations and experiments demonstrate the effectiveness of proposed vibration suppressing strategy.

关键词： Active Magnetic Bearing(AMB) vibration suppression frequency estimation phase shift generalized integrator(PSGI)

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Equivalent circuit model for the insulated core transformer

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Nuclear Science and Techniques 2016年第3期27卷 132-137页

作者： Bo Yang Lei Cao Jun Yang Sheng-Chi Yan Yi-Bin Tao China Electric Power Research Institute Nanjing 210003China State Key Laboratory of Advanced Electromagnetic Engineering and Technology Huazhong University of Science and TechnologyWuhan 430074China

The design of the insulated core transformer(ICT)needs to consider the flux leakage *** equivalent linear circuit model is proposed based on the principle of *** is composed by two types of leakage inductances:conventional leakage between windings and special leakage introduced mainly by the insulation *** values of leakage inductances depend on the dimensions of the core,gaps,or windings and the property of magnetic *** circuit allows for quantitatively evaluating influences of ICT internal parameters on its output *** winding self- and mutual inductance matrix is mathematically converted to derive the inductance *** an example,the leakage parameters of a sixstage two-dimensional(2D) ICT are calculated and analyzed.

关键词：等效电路模型变压器绝缘性能影响电感计算对偶原理等效线性磁性材料

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Modeling and Analysis for Practical CT Based on Transient Test and Parameter Identification

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CSEE Journal of Power and Energy Systems 2016年第4期2卷 51-57页

作者： Xianggen Yin Zhe Zhang Xuanwei Qi Gan Li Wenbin Cao Qian Guo State Key Laboratory of Advanced Electromagnetic Engineering and Technology Huazhong University of Science and TechnologyWuhan 430074China

In the transient process of power grid faults,the transferring distortion of current transformer(CT)can seriously affect relay protection *** these conditions,it is difficult to analyze the ferromagnetic characteristic of the magnetizing branch in the transient equivalent circuit of *** Jiles-Atherton hysteresis model(J-A model),which is widely used in digital simulations,can accurately describe the hysteresis and saturation process of the core characteristics;however,to acquire the parameters of the J-A model of current transformers in practical use is still a challenging *** this paper,physical tests based on a practical CT and parameter identification are presented to solve the *** basic hysteresis loops of P,PR,and TPY class of practical current transformers are obtained through physical ***,the J-A model parameters are identified using a hybrid genetic/simulated annealing algorithm,based on which transient simulation models of different class CTs are *** effectiveness of the proposed method is verified via dynamic physical simulation tests.A typical accident is analyzed based on these models.

关键词： Current transformer dynamic physical simulation tests J-A model parameter identification transient test

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Artificial ferroelectric-like hysteresis in antiferroelectrics with non-uniform disorder

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Acta Materialia 2025年 294卷

作者： Zhang, Yi Zhang, Xinyu Zheng, Zihao Xie, Jiyang Lou, Jing Qin, Jiayi Wang, Shanhu He, Yang Du, Yifeng Yang, Bin Huang, Xin Han, Huiping Wu, Yilin Liu, Shuya Khan, Afzal Li, Zhidong Ye, Qianxu Yang, Sheng'an Ma, Ji Zhang, Hui Liu, Xiang Chen, Qingming Hu, Wanbiao Ma, Jing Yi, Jianhong Guo, Jinming Peng, Shou Pan, Hao Wu, Liang Nan, Ce-Wen Faculty of Materials Science and Engineering Kunming University of Science and Technology Yunnan Kunming 650093 China Ministry-of-Education Key Laboratory of Green Preparation and Application for Functional Materials School of Materials Science and Engineering Hubei University Hubei Wuhan 430062 China Yunnan Key Laboratory of Electromagnetic Materials and Devices National Center for International Research on Photoelectric and Energy Materials School of Materials and Energy Yunnan University Yunnan Kunming 650091 China Electron Microscopy Center Yunnan University Yunnan Kunming 650091 China Triumph Science and Technology Engineering Co. Ltd. Beijing Haidian 100036 China State Key Laboratory of Advanced Glass Materials CNBM Research Institute for Advanced Glass Materials Group Co. Ltd. Anhui Bengbu 233000 China Southwest United Graduate School Yunnan Kunming 650093 China School of Materials Science and Engineering Tsinghua University Beijing 100084 China State Key Laboratory of Advanced Waterproof Materials School of Advanced Materials Shenzhen Graduate School Peking University Guangdong Shenzhen 518055 China

Antiferroelectrics exhibit unique double-hysteresis polarization loops, which have garnered significant attention due to their potential applications such as energy storage, electromechanical transduction, as well as synapse devices. However, numerous antiferroelectric materials have been reported to display signs of hysteresis loops resembling those of ferroelectric materials, and a comprehensive understanding remains elusive. In this work, we provide a phenomenological model that reproduces such widely observed artificial ferroelectric hysteresis with a superposition of numerous disordered antiferroelectric loops that have varying antiferroelectric-to-ferroelectric transition fields, particularly when these field ranges intersect. Experimentally, we realized such artificial ferroelectric-like hysteresis loops in the prototypical antiferroelectric PbZrO₃ and PbHfO₃ thin films, by introducing non-uniform local disorder (e.g., defects) via fine-tuning of the film growth condition. These ferroelectric-like states are capable of persisting for several hours prior to transitioning back into the thermodynamically stable antiferroelectric ground state. Those results provide insights into the fundamental impact of disorder on the AFE properties and new possibilities of disorder-tailored functions. © 2025 Acta Materialia Inc.

关键词： Antiferroelectric Artificial ferroelectric-like hysteresis PbHfO3 PbZrO3 Thin films

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High-rate sodium metal batteries enabled by trifluormethylfullerene additive

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Nano Research 2022年第8期15卷 7172-7179页

作者： Pengju Li Xiaobo Huang Zhipeng Jiang Han Zhang Pengwei Yu Xing Lu Jia Xie State Key Laboratory of Materials Processing and Die&Mould Technology School of Materials Science and EngineeringHuazhong University of Science and TechnologyWuhan 430074China State Key Laboratory of Advanced Electromagnetic Engineering and Technology School of Electrical and Electronic EngineeringHuazhong University of Science and TechnologyWuhan 430074China

Sodium metal is a promising anode for sodium batteries due to its high theoretical capacity and low ***,the serious Na dendrite growth and low Coulombic efficiency,especially at high current densities/cycling capacities,severely limit the application of sodium metal ***,trifluoromethylfullerene,C_(60)(CF_(3))_(6),is designed as an electrolyte additive to enable the high-rate cycling of sodium metal anodes with high Coulombic *** CF3 groups contribute to the formation of stable NaF-rich solid electrolyte interface layer,while C_(60)cages induce the uniform distribution of sodium ions and promote the formation of smooth and compact ***,Na||Cu cell with C_(60)(CF_(3))_(6)can be cycled at 2 mA·cm^(−2)and 10 mAh·cm^(−2)over 180 cycles with an average Coulombic efficiency of 99.9%,and Na||Na cell can be cycled at 10 mA·cm^(−2)over 600 ***,Na||NaV2(PO_(4))_(3)@C full cell exhibits high capacity retention of 84%over 2,000 cycles at 20 C(~3 mA·cm^(−2)).

关键词： sodium metal anode fullerene trifluormethylfullerene high rate electrolyte additive

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Motion-Interference Free and Self-Compensated Multi-Receptor Skin with all Gel for Sensory Enhancement

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advanced Functional Materials 2025年

作者： Luo, Yibing Wang, Hao Liang, Yuning Xie, Ruijie Wu, Zixuan Zhou, Yubin Tao, Kai Pan, Shaowu Yang, Bo-Ru Fu, Yongqing Liu, Fei Huo, Fengwei Wu, Jin State Key Laboratory of Optoelectronic Materials and Technologies and the Guangdong Province Key Laboratory of Display Material and Technology School of Electronics and Information Technology Sun Yat-sen University Guangzhou510275 China Xiamen University Xiang'an South Road Fujian Xiamen361102 China State Key Laboratory of Transducer Technology Shanghai200050 China The Ministry of Education Key Laboratory of Micro and Nano Systems for Aerospace School of Mechanical Engineering Northwestern Polytechnical University Xi'an710072 China State Key Laboratory of Advanced Fiber Materials College of Materials Science and Engineering Donghua University Shanghai201620 China Faculty of Engineering and Environment Northumbria University Newcastle upon TyneNE1 8ST United Kingdom Research Center of Flexible Sensing Materials and Devices School of Applied Physics and Materials Wuyi University Jiangmen529020 China Dongguan Key Laboratory of Advanced Drug Delivery and Biosensing Research and Development School of Pharmacy and Dongguan Innovation Institute Guangdong Medical University Dongguan523808 China 30 South Puzhu Road Nanjing211816 China

Stretchable multimodal electronic skin (e-skin) has attracted intensive research interest but faces great challenges related to strain interference, crosstalk issues, and integration of multiple sensitive materials. Herein, a stretchable and strain-isolated multimodal (SSIM) e-skin capable of concurrently and sensitively monitoring temperature, humidity, UV light, and oxygen, while also possessing self-compensation capability is developed. The SSIM sensing platform is created by chemically anchoring polyethylene terephthalate onto polydimethylsiloxane through silane treatment to form island-bridge structures. This method effectively isolates strain and improves interfacial adhesion, achieving a state-of-the-art low strain interference of 0.2% and an adhesion energy exceeding 300 J m−2 (13.4 times that of the untreated material), ensuring the e-skin's stable operation even under dynamic stretching. To mitigate crosstalk and fabrication complexity, a single hydrogel film is employed to facilitate self-compensating multimodal sensing through various sensing mechanisms and physical isolations. The SSIM e-skin can simultaneously monitor several environmental and physiological signals with minimized crosstalk without interference from body movements. It enables remote respiration monitoring with wireless circuitry, highlighting its substantial potential in health monitoring, medical diagnostics, and neurorehabilitation. © 2025 Wiley-VCH GmbH.

关键词： Crosstalk

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TOV in SMs during MMC riding through zero DC voltage fault: Analysis and suppression

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Journal of engineering 2016年第11期2016卷 386-393页

作者： Hu, Jiabing Lu, Maozeng Lin, Lei State Key Laboratory of Advanced Electromagnetic Engineering and Technology Huazhong University of Science and Technology Wuhan430074 China

A comprehensive analysis and a suppression method of sub-modules' (SMs') transient over-voltage (TOV) in a hybrid modular multilevel converter are presented, consisting of half half-bridge SMs and half full-bridge SMs, during riding through zero DC voltage faults. Analytical expressions of SMs' TOV are initially explored. The relations among transient voltages of SMs in six arms with the same fault moment and those in a fixed arm with different fault moments are deduced. Furthermore, the maximum value of SMs' transient voltages dependent on the fault moment is also presented. A suppression method using common-mode voltage injection is proposed without sacrificing the performance of the converter on riding through zero DC voltage faults. Simulated results are provided to demonstrate the validity of the analytical results and the feasibility of the proposed suppression scheme. © 2016, Institution of engineering and technology. All rights reserved.

关键词： Power quality

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Forecasting Scenario Generation for Multiple Wind Farms Considering Time-series Characteristics and Spatial-temporal Correlation

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Journal of Modern Power Systems and Clean Energy 2021年第4期9卷 837-848页

作者： Qingyu Tu Shihong Miao Fuxing Yao Yaowang Li Haoran Yin Ji Han Di Zhang Weichen Yang State Key Laboratory of Advanced Electromagnetic Engineering and Technology Hubei Electric Power Security High Efficiency Key Laboratory School of Electrical and Electronic EngineeringHuazhong University of Science and TechnologyWuhanChina Department of Electrical Engineering Tsinghua UniversityBeijingChina

Scenario forecasting methods have been widely studied in recent years to cope with the wind power uncertainty problem. The main difficulty of this problem is to accurately and comprehensively reflect the time-series characteristics and spatial-temporal correlation of wind power generation. In this paper, the marginal distribution model and the dependence structure are combined to describe these complex characteristics. On this basis, a scenario generation method for multiple wind farms is proposed. For the marginal distribution model, the autoregressive integrated moving average-generalized autoregressive conditional heteroskedasticity-t (ARIMA-GARCH-t) model is proposed to capture the time-series characteristics of wind power generation. For the dependence structure, a time-varying regular vine mixed Copula (TRVMC) model is established to capture the spatial-temporal correlation of multiple wind farms. Based on the data from 8 wind farms in Northwest China, sufficient scenarios are generated. The effectiveness of the scenarios is evaluated in 3 aspects. The results show that the generated scenarios have similar fluctuation characteristics, autocorrelation, and crosscorrelation with the actual wind power sequences.

关键词： Scenario generation wind farm regular vine Copula spatial-temporal correlation time-series characteristics

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1,3,5-Trifluorobenzene endorsed EC-free electrolyte for high-voltage and wide-temperature lithium-ion batteries

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Journal of Energy Chemistry 2023年第10期85卷 49-57,I0003页

作者： Mingsheng Qin Ziqi Zeng Qiang Wu Xiaowei Liu Qijun Liu Shijie Cheng Jia Xie State Key Laboratory of Advanced Electromagnetic Engineering and Technology School of Electrical and Electronic EngineeringHuazhong University of Science and TechnologyWuhan 430074HubeiChina State Key Laboratory of Materials Processing and Die&Mould Technology School of Materials Science and EngineeringHuazhong University of Science and TechnologyWuhan 430074HubeiChina State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of TechnologyWuhan 430070HubeiChina

Ethylene carbonate(EC)is susceptible to the aggressive chemistry of nickel-rich cathodes,making it undesirable for high-voltage lithium-ion batteries(LIBs).The arbitrary elimination of EC leads to better oxidative tolerance but always incurs interfacial degradation and electrolyte ***,an EC-free electrolyte is deliberately developed based on gradient solvation by pairing solvation-protection agent(1,3,5-trifluorobenzene,F_(3)B)with propylene carbonate(PC)/methyl ethyl carbonate(EMC)formulation.F_(3)B keeps out of inner coordination shell but decomposes preferentially to construct robust interphase,inhibiting solvent decomposition and electrode ***,the optimized electrolyte(1.1 M)with wide liquid range(-70–77℃)conveys decent interfacial compatibility and high-voltage stability(4.6 V for LiNi_(0.6)Mn_(0.2)Co_(0.2)O_(2),NCM622),qualifying reliable operation of practical NCM/graphite pouch cell(81.1%capacity retention over 600 cycles at 0.5 C).The solvation preservation and interface protection from F_(3)B blaze a new avenue for developing high-voltage electrolytes in next-generation LIBs.

关键词： Lithium-ion batteries Solvation structure High-voltage electrolyte Wide-temperature range Interfacial chemistry

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