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24th International Conference on Electronic Packaging Technology, ICEPT 2023

作者： Wang, Shuaipeng Fu, Zhen Chen, Yanning Cheng, Xiaofeng Beijing Engineering Research Center of High-Reliability Ic with Power Industrial Grade Beijing Smart-Chip Microelectronics Technology Co. Ltd. State Grid Key Laboratory of Power Industrial Chip Design and Analysis Technology Beijing China

ISBN: (纸本)9798350338812

As a common sensor, Magnetic sensor is widely used in power generation, automotive electronics, rail transit and power field. In this paper, we describes the principle and technological process of the magnetic sensor, and compares the advantages of the hall sensor [1] [2] [3] and the magnetic sensor [4] [5] [6]. Then we tests the developed magnetic sensor sample on the basis of analyzing the demand for magnetic sensor in the power field. Finally, we conducted a preliminary test on the performance of the sensor and discuss the optimization of the sensor. © 2023 IEEE.

关键词： Magnetic measurement Magnetic sensor MTJ

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Thermal characteristics of solid-state battery and its thermal management system based on flat heat pipe

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APPLIED THERMAL ENGINEERING 2024年 252卷

作者： Yang, Rui Xie, Yi Li, Kuining Li, Wei Hu, Xiaorui Fan, Yining Zhang, Yangjun Chongqing Univ Sch Energy & Power Engn Key Lab Low Grade Energy Utilizat Technol & Syst Chongqing 400044 Peoples R China Chongqing Univ Coll Mech & Vehicle Engn Chongqing 400044 Peoples R China Natl Univ Singapore Coll Design & Engn Singapore 117575 Singapore State Grid Chongqing Elect Power Co Chongqing 400015 Peoples R China Tsinghua Univ Sch Vehicle & Mobil State Key Lab Automot Safety & Energy Beijing 100084 Peoples R China

Solid-state batteries (SSBs) offer promising potential for commercial applications due to their high energy density and elimination of the flammability associated with conventional liquid electrolyte batteries (LBs). Taking into account both experimental and simulated outcomes, the SSB generates more heat than LB, which leads to a higher temperature rise. To effectively address this issue, a hybrid battery thermal management system (BTMS) with micro heat pipe array (MHPA) and air-cooling was developed in this work for the solid-state battery pack (SSBP). In parallel, an electro-thermal coupling model at the pack level considering parallel branch current distribution and an equivalent thermal resistance-based MHPA model were developed. The models were verified by comparing the experimental and simulated results on the 2-parallel and 1-series connected (2P1S) battery pack and the BTMS. A maximum average absolute error (AEave) of 1.11 degrees C, an average relative error (REave) of 1.62 %, and a root mean square error (RMSE) of 0.88 degrees C were considered. The simulations were conducted to compare the temperature rise of the battery pack with MHAP and aluminum plate cooling. In the 35 degrees C-35 degrees C-6 m/s cooling condition and at 1.5C discharge, the pack temperature reached 52.21 degrees C with aluminum plate cooling, 8 degrees C higher than that with MHPA. Moreover, the simulations predicted the temperature, current, and state of charge distributions of 3P4S connected SSBP and LB pack (LBP) based on the hybrid BTMS at different cooling conditions. The results showed that the temperatures of SSBP and LBP were controlled within 43 degrees C even at 35 degrees C ambient temperature. Reducing the air temperature had a stronger cooling capacity than increasing the air speed. However, the temperature gradient was exacerbated to 3.29 degrees C and 1.54 degrees C in the SSBP and LBP. The impact of temperature difference on the resistance worsened the current inhomo

关键词： Electric vehicle Solid -state battery Electro-thermal model Micro heat pipe array Thermal characteristic

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Active power Decoupling Control for Three-Level Buck Four-Leg Current Source Inverter

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IEEE TRANSACTIONS ON power ELECTRONICS 2024年第12期39卷 15943-15953页

作者： Chen, Baoxuan Sun, Yao Xie, Shiming Liu, Yonglu Lv, Yi Su, Mei Cent South Univ Sch Automat Changsha 410083 Peoples R China Cent South Univ Hunan Prov Key Lab Power Elect Equipment & Grid Changsha 410083 Peoples R China Natl Engn Res Ctr Adv Energy Storage Mat Changsha 410083 Peoples R China Hunan Elect Power Design Inst Co Ltd China Energy Engn Grp Changsha 410007 Peoples R China

Significant pulsating power exists on the dc side of three-phase four-wire inverters in the case of unbalanced or nonlinear loads, which will degrade the power quality of the dc side voltage. To address this issue, this article presents an active power decoupling control scheme for a three-level buck four-leg current source inverter topology. By fully utilizing the flying capacitor converter, this scheme can effectively buffer the pulsating power into the flying capacitor without modifying any hardware circuit and suppress the pulsating input current. In addition, a virtual resistor scheme is adopted to improve the stability of the converter. The experimental results validate the effectiveness of the proposed method.

关键词： Capacitors Voltage control Inverters Resistors Load modeling Active filters Uninterruptible power systems Active power decoupling nonlinear load three-level buck four-leg current source inverter (3l-buck-4L-CSI) three-phase unbalanced system virtual resistor

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Optimized Control of active loads in DC microgrids with virtual energy storage

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ENERGY REPORTS 2022年 8卷 13962-13969页

作者： Fu, Shouqiang Wang, Chang Zhang, Libin Chen, Xiangyu Shu, Yinan State Grid Jibei Elect Power Econ Res Inst Beijing 100038 Peoples R China Beijing Jingyan Elect Power Engn Design Co Beijing 100038 Peoples R China North China Elect Power Univ State Key Lab Alternate Elect Power Syst Renewable Baoding 071003 Peoples R China

In DC microgrids, optimized control of the active load is critical to achieving economic benefits and a stable DC voltage. In this paper, first, the conversion relationship between the rotational kinetic energy of a motor and the storage energy of a super capacitor is established for integrating the load capacity with the current energy storage system. Second, the virtual energy storage device (VESD) is emulated by the active loads, which have the same operating parameters as those of an actual super capacitor. Third, a novel economic management scheme for the DC microgrid with VESD is proposed, considering the product revenue of load and the life loss of the battery. In addition, to further improve DC microgrid stability, the system operating range is divided based on the voltage hierarchical control, and as a result, the active load in the form of a VESD has a proper sequence to participate in voltage regulation. Last, the test results demonstrate that the microgrid can obtain significant economic benefits. In addition, the dynamic stability of the DC voltage can also be improved thanks to the simpler coordination between the actual ESD and VESD. (c) 2022 The Authors. Published by Elsevier Ltd. This is an open access article under the CC BY-NC-ND license (http://***/licenses/by-nc-nd/4.0/).

关键词： Virtual energy storage Active load Super capacitor Hierarchical control DC microgrid

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Efficient Exploitation of Noise Leakage for Template Attack

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IEEE EMBEDDED SYSTEMS LETTERS 2023年第3期15卷 161-164页

作者： Cheng, Song Zhang, Hailong Hu, Xiaobo Gao, Shunxian Liu, Huizhi Beijing Smart Chip Microelect Technol Co Ltd State Grid Key Lab Power Ind Chip Design & Anal Te Beijing 102299 Peoples R China Beijing Smart Chip Microelect Technol Co Ltd Beijing Engn Res Ctr High Reliabil Power Ind Grade Beijing 102299 Peoples R China Chinese Acad Sci Inst Informat Engn State Key Lab Informat Secur Beijing 100045 Peoples R China

Because of its strong leakage characterization ability and high-key-recovery efficiency, template attack (TA) is the strongest side-channel attack from the information-theoretic point-of-view. In light of this, TA can be used as a powerful tool to evaluate the security of a crypto device in real scenarios. In fact, by evaluating the key-recovery efficiency of TA, the security of a crypto device can be quantified. Therefore, it is very meaningful to optimize the key-recovery efficiency of TA in real scenarios. In this work, we show that the leakage exploitation style can significantly influence the key-recovery efficiency of TA. In detail, rather than exploiting the leakage of the noise part, the leakage of the squared noise part can be used in TA. Theoretically, by exploiting the leakage of the squared noise part, the key-recovery efficiency of TA can be optimized under the normalized difference metric. Empirically, with the evaluation data provided by DPA Contest and ASCAD, the key-recovery efficiency of TA can be optimized under the success rate metric. Overall, this contribution may help one to accurately evaluate the security of a crypto device in real scenarios.

关键词： Noise leakage normalized difference side-channel attacks success rate template attack

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Low carbon planning of flexible distribution network considering orderly charging and discharging of EV

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ELECTRIC power SYSTEMS RESEARCH 2025年 244卷

作者： Wang, Lei Sun, Qianbo Wang, Xuli Shi, Tiancheng Yang, Xin Xu, Haihua Hefei Univ Technol Anhui Key Lab New Energy Utilizat & Energy Conserv Hefei 230002 Peoples R China Econ & Tech Res Inst State Grid Anhui Elect Power Co Ltd Hefei 230022 Peoples R China Anhui Huadian Engn Consulting & Design wCo Ltd China Energy Construct Grp Hefei 230022 Peoples R China

In the context of the "dual carbon" goal, the rapid growth of distributed new energy and electric vehicles (EV) has brought great challenges to the safe and economic operation of the distribution grid. In order to improve the economy and low carbon of distribution network planning, this paper proposes a low carbon planning method of flexible distribution network considering EV orderly charging and discharging. Firstly, a dynamic charging and discharging boundary aggregation model of EV cluster is constructed based on the EV individual power feasible domain model. Secondly, using the carbon emission flow theory as a tool, a two-layer low-carbon planning model of distribution network considering EV orderly charge and discharge is established. The upper layer plans the distribution network lines, two-way charging piles, and intelligent soft open point (SOP), while the lower layer optimizes EV charge and discharge strategy and user consumption strategy with the goal of minimum comprehensive operating cost. Then, the two-layer nonlinear model is transformed into a single-layer mixed- integer second-order cone programming model by means of upper-lower linkage, large M method and second- order cone relaxation, which is solved by commercial solvers. Finally, the feasibility and validity of the model are verified in the improved 33-node system.

关键词： Electric vehicle cluster Demand response Carbon emission Soft open point Distribution network planning

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The research of the side-channel analysis method based on deep learning for trusted platform module 2

The research of the side-channel analysis method based on de...

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2022 2nd International Conference on power System and Energy Internet, PoSEI 2022

作者： Wang, Zhe Wang, Hui Yang, Yuning Li, Dejian Zhang, Zhe Wu, Tiantian State Grid Key Laboratory of Power Industrial Chip Design and Analysis Technology Beijing Smart-Chip Microelectronics Technology Co. Ltd. Beijing100192 China

At present, the trusted platform module (TPM) has been widely used in electricity, finance, transportation, and other industries, and its security has attracted much attention. The research on the side-channel attack (SCA) can be conducive to improving the security design technology of trusted platform modules. The side channel attack on the trusted platform module is studied from the initial differential power analysis (DPA) to the machine learning method. This paper introduces the deep learning techniques in SCA and proposes a new SCA technique based on deep learning. Firstly, on basis of the characteristics of SCA on TPM, we improve the convolutional neural network (CNN) models, including ResNet, VGG, and Google Net. Then, for the SM4 cipher implemented with and without countermeasures, we implement some attack experiments by exploiting the SCA based on various deep learning models and compare the experimental results with the DPA attack. The experiment results show that under the same circumstance, the SCA based on the deep learning method is more effective. We compare the effects of different CNN models and hyper-parameters to provide the basis and data for further research. © 2022 Institute of Physics Publishing. All rights reserved.

关键词： Side channel attack

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design and characterization of novel doped heterostructured electromagnetic shielding packaging materials for Current sensor chip applications 24

Design and characterization of novel doped heterostructured ...

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24th International Conference on Electronic Packaging Technology (ICEPT)

作者： Huang, Haichao Wang, Shuaipeng Chen, Yanning Fu, Zhen Li, Yongfu Jiang, Xiping Beijing Smart Chip Microelect Technol Co Ltd State Grid Key Lab Power Ind Chip Design & Anal T Beijing Peoples R China Beijing Smart Chip Microelect Technol Co Ltd Beijing Peoples R China State Grid Chongqing Elect Power Co Elect Power Res Inst Chongqing Peoples R China

ISBN: (纸本)9798350338812;9798350338829

Electromagnetic radiation not only disrupt the use of equipment such as sensors, electronic components and precision instruments and affects their normal operation, but also leads to the leakage of important data and even reduces their reliability. It is still challenging to significantly improve the anti-electromagnetic interference performance from the chip packaging material level. Doped polyaniline (PAN') is considered as one of the most potent electromagnetic shielding materials as its easy synthesis, stable performance, unique chemical and electromagnetic *** address the technical challenges of chip anti-interference in complex electromagnetic environment and make full use of the advantages of doped PANI in electromagnetic shielding, this thesis uses doped PANE carbon fiber, metal particles, etc. to prepare heterogeneous structure composite electromagnetic shielding packaging materials. Through the modification of the material and the construction of the shielding structure, the influence of the content of functional components, the size and structure of the reflective cavity on its electromagnetic properties is systematically studied, and the mechanism of the regulation of the electromagnetic shielding performance of the material is revealed. A series of CF/PANI heterogeneous structure composite electromagnetic shielding materials were obtained by in situ polymerization of carbon fiber surface coated with PANT, through optimization of components, structure and properties. Based on the excellent electrical properties of PANI and the characteristic of no electromagnetic loss, the reflective layer is constructed inside the material, and the effects of carbon fiber and metal particle content and morphology on the conductivity and dielectric behavior of CF/PANI are systematically investigated to enhance the dielectric loss and absorption loss of the material and improve the electromagnetic shielding effectiveness of the material through multiple reflecti

关键词： Heterogeneous Structure Electromagnetic Shielding Packaging materials

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Multiple DC coordinated suppression method for ultra-low frequency oscillations

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SUSTAINABLE ENERGY TECHNOLOGIES AND ASSESSMENTS 2022年第PartA期53卷

作者： Wu, Wencheng Wang, Xiaoru Xiao, Xiong Southwest Jiaotong Univ Sch Elect Engn Chengdu 610021 Sichuan Peoples R China Southwest Elect Power Design Inst Chengdu 610021 Sichuan Peoples R China China Elect Power Res Inst State Key Lab Power Grid Safety & Energy Conserva Beijing 100192 Peoples R China

Systems with a high proportion of hydropower are prone to induce ultra-low oscillations when the local load or the delivered power of the DC system changes. For systems where multiple DC circuits exist, system damping can be greatly improved by coordinating supplementary control of the multiple DC circuits to suppress the ultra-low frequency oscillations. However, solving this problem based on the conventional output feedback design approach requires dealing with difficult bilinear matrix inequalities. In this paper, a controller-design approach based on a differential evolution algorithm is proposed. First, a centralized or decentralized structure of multiple DC coordinated controller of a specific order and the corresponding state space equations of the closed-loop system are derived. Next, the random method is used to generate the initial controllers, then the minimum damping ratios of the closed-loop system are calculated, and finally the minimum damping ratios of the closedloop system are optimized using the differential evolution algorithm. This method can be used to solve for the DC supplementary controller based on the lead-lag structure, which is widely applied in engineering practice, by converting it to the state space form. Therefore, the proposed method can be used to solve the multiple DC coordinated controllers of three structures (i.e., centralized, decentralized, and decentralized based on the leadlag link) in a unified framework. The proposed method is applied to two case studies, Cigre Nordic and China Southern power grid. Results indicate that the designed controllers of all three structures improved the system damping significantly and eliminated the risk of ultra-low frequency oscillations to the system operation. The proposed method is highly practical as it can be applied to DC supplementary controllers based on the lead-lag module.

关键词： Ultra-low-frequency oscillation Wide-area control Output feedback Centralized control Decentralized control Differential evolution algorithm

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A verification method for power-off protection mechanism of embedded chip non-volatile memory

A verification method for power-off protection mechanism of ...

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2021 IEEE International Conference on power, Intelligent Computing and Systems, ICPICS 2021

作者： Zhou, Bin Liu, Jia Liang, Zhaoqing Key Lab of Power Grid Design and Analysis State Grid Corporation of China Beijing Chip Microelectronics Technology Co. Ltd. Beijing China

ISBN: (纸本)9781665441308

This paper proposes a verification method of power-off protection mechanism for non-volatile memory, which is suitable for the application scenarios where the data needs to be protected when power-off occurs when the non-volatile memory is erased or written. This method can verify the correctness of the power-off protection mechanism, i.e. whether the data operated after the power-off event can maintain atomicity. This verification method gives the specific verification method, but does not limit the specific details of the implementation. © 2021 IEEE.

关键词： Nonvolatile storage

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