bluuebunny/crossref_metadata_2025_split huggingface dataset:
Power Generation Performance of CdTe Thin Film Solar Modules in Lhasa
Authors: Dong Xiaodong , Zhen Bai , Liu Yue , Ding Haitao 
Published: November 2023

Abstract
With the increasing energy consumption of buildings, reducing the energy consumption of buildings has become a key link to achieving the goal of carbon neutrality. Building integrated photovoltaic (BIPV) is an important research direction. Based on the CdTe thin film solar modules power generation system on the south-facing wall of a building in Lhasa, the article collected the annual power generation data for 2022. The characteristics and variation patterns of the total monthly power generation and typical monthly daily power generation are analyzed. Furthermore, the correlation between power generation performance and the main influencing factors was analyzed. The differences in power generation characteristics between CdTe thin films solar modules and single crystal silicon solar modules were compared and analyzed. The results show that the annual power generation of the CdTe thin film solar modules power generation system exhibits a “U” shaped distribution, and the power generation in winter is greatly affected by weather conditions. The peak power of 1kWp CdTe thin film solar modules is lower than that of single crystal silicon solar modules. The generation duration is longer than single crystal silicon solar modules. The total power generation is greater than single crystal silicon solar modules.
Low Carbon Economic Dispatch of Rural Distribution Network under High Photovoltaic Penetration
Authors: Tian Fuhao , Chen Jiaxi , Sun Yikai , Zhou Sheyu , Yang Hongji , Wang Xiran 
Published: November 2023

Abstract
To promote the low-carbon development of the power grid, the penetration rate of distribution photovoltaics in power systems has greatly increased. Some distribution networks may switch roles between energy producers and energy consumers multiple times a day. Especially in rural areas with low loads and abundant land resources, a large number of distributed photovoltaics may increase the energy balancing burden of the transmission system. To address this, the optimal operation of local resources is the key to the local accommodation of photovoltaics. In rural distribution networks, the light industrial load and agricultural load in rural distribution networks have similar electricity consumption behavior, and are suitable for centralized load management. This article proposes a low-carbon economic dispatch model of rural distribution networks under high photovoltaic penetration.. In specific, the light industrial load and the agricultural load are modeled considering their production requirements. Carbon emission costs and photovoltaic consumption costs are incorporated into the dispatch model of the distribution network. The case study is conducted based on a rural distribution network. The results of the case study indicated that the proposed model could increase the photovoltaic absorption rate by 10.96% and reduce carbon emissions by 3.4% for the test system.
The goal and path of source network load storage coordination and interaction to help the construction of a new power system
Authors: Zhang Hanbing , Lan Xuanli , Ye Jichao , Huang Hui , Xu Yonghai , Ji Aoying , Hu Xinwei 
Published: November 2023

Abstract
Under the goal of “carbon peak and carbon neutral”, the characteristics of the power system mainly based on new energy will undergo significant changes. In order to solve the problem of insufficient power supply capacity caused by the precision of new energy generation, this paper puts forward the construction scheme of the new power system of source network, load, storage coordination, and interaction, and uses energy storage and flexible load adjustment to improve the transmission capacity of the connection line under emergency conditions. At the same time, energy storage centers and load aggregation providers are used to optimize the equivalent load under normal conditions and minimize the shortage of power supply capacity. Furthermore, the mathematical model of each index is established and the coordination level of source network load storage based on AHP-Delphi empowerment is proposed. Finally, the rationality of the actual planning scheme in the province is comprehensively evaluated, which provides a reference for the construction of the new power system.
Thrust Fluctuation Optimization of Permanent Magnet Linear Motor Based on Composite Slot Wedge
Authors: Zhang Zi hao , Wang Shu hua 
Published: November 2023

Abstract
In order to reduce the thrust fluctuation of the linear motor, combined with its structural characteristics, the method of embedding a magnetic slot wedge is adopted. Based on the design of a common slot wedge structure, the genetic algorithm is used to optimize the slot wedge size, select the best size of the slot wedge structure, and then carry out finite element analysis. The results show that the thrust fluctuation of the single-sided linear motor is reduced by 66.42%, and that of the double-sided linear motor is reduced by 61.23%, which effectively reduces the thrust fluctuation. It has certain practical application value.
Design and modeling of an all-solid-state high power bidirectional DC switch
Authors: Cui Renhao , Hao Cheng 
Published: November 2023

Abstract
In order to improve the reliability of the aircraft ring network power distribution system for the future development needs of advanced multi-power and all-power aircraft, a design scheme of an all-solid-state high-power bidirectional DC switch is proposed to upgrade the aircraft power distribution system originally composed of traditional mechanical switches and some low-power solid-state power controllers to an all-solid-state aircraft power distribution system. The solid-state high-power bi-directional DC switch uses SiC MOSFETs as switching elements is modeled and simulated by Saber simulation software and uses reverse time overcurrent protection and short circuit protection design to realize high voltage control distribution, circuit protection, and fault isolation functions. The simulation verifies that the designed all-solid-state high-power bidirectional DC switch has short-circuit protection and overcurrent protection intelligent protection functions. Applying the design to the aircraft distribution loop network greatly enhances the reliability of the aircraft distribution system drives the development of aircraft multi-electricity-all-electricity technology, and also promotes the application of digital solid-state series modular switches in civil transportation and high-voltage power supply fields.
AC Series Arc Fault Diagnosis Method Based on AO-VMD Multidimensional Feature Extraction
Authors: Di Xinyi , Liu Song , Li Dan , Ma Wenxiao , Xue Maofang 
Published: November 2023

Abstract
In view of the difficulty in determining the number of mode components K and penalty factor α in VMD, which leads to poor signal decomposition effect and low diagnosis and recognition rate due to insufficient feature extraction in AC arc fault, an arc fault diagnosis method based on the Aquila algorithm was proposed to optimize the multivariate feature extraction of variational mode decomposition. First of all, the arc fault test platform was set up to consider the resistive, inductive, capacitive, and other household loads were considered to obtain the normal and fault current data. Second, the optimal K and α parameters were obtained by AO-VMD optimization and then decomposed into intrinsic mode functions (IMFs) by substituting them into VMD. Then, the time domain characteristics of the IMF2 component, the Energy Entropy of IMFs, and the Fuzzy Entropy of the kurtosis maximum IMFk component were extracted respectively, and the multidimensional fault characteristic matrix was constructed. Finally, the random forest (RF) model was used to accurately identify arc faults. The experiment shows that the average fault recognition rate of each type of load is above 99%, which has an excellent diagnostic effect.
Micro-fault identification for lithium-ion batteries in electric vehicles based on similarity measurement of the charging sequence
Authors: Chen Yingjie , Hou Yankai , Yan Zhu 
Published: November 2023

Abstract
Battery fault diagnosis is critical to safeguard the safety of electric vehicles. Since lithium-ion battery cells are usually inconsistent and difficult to distinguish from faults, existing micro-fault identification methods are difficult to detect faults as early as possible based on real-world vehicle data. In contrast to the operation process, the voltage and temperature changes are more regular since the current relatively remains constant and the charging strategy is fixed, which is conducive to accurate micro-fault identification. According to the charging strategy of electric vehicles, charging data extraction and selection methods are introduced. Considering the practicality and the difficulty of threshold value determination, the micro-fault identification approach based on DBSCAN is proposed. Normalized IAVs and LIP distances are utilized as features, which come from charging sequences. The results of the thermal runaway vehicle show that the method can effectively find fault cells in voltage signals 18 days before thermal runaway occurs.
Simulation Analysis Based on COMSOL Helicopter Time-domain Aeromagnetic Method
Authors: Su Rui , Zhang Yiming , Zhang Dong , Gao Junxia 
Published: November 2023

Abstract
This paper takes the time-domain aeromagnetic system as the research object and uses the finite element software COMSOL Multiphysics 6.0 to establish the three-dimensional system model. By comparing the COMSOL Multiphysics forward simulation solution with the one-dimensional numerical solution, it verifies that the COMSOL software meets the simulation accuracy requirements of the three-dimensional time-domain aeromagnetic method, and focuses on the analysis of the transient response at different flight altitudes is also analyzed. Based on the analysis of this paper, a set of aeromagnetic parameters with high detection capability is determined for engineering practice, and a test of the system is completed.
The effect of the ceramic foam cell structure on the combustion performance of porous media burner: experimental study
Authors: Zheng Xiaolong , Hu Jinglei , Chen Yuanyuan , Xu Xuecheng 
Published: November 2023

Abstract
To investigate the effect of the ceramic foam cell structure on the combustion characteristics, a porous media burner(PMB) composed of foamed ceramic plates with Kelvin and WP cell models as structural features was designed and developed. The combustion chamber temperature, lean combustion limit, radiation efficiency and flue gas emission characteristics of the burner were analysed in the combustion of methane. The results show that with the same pore density, skeleton diameter and operating parameters, the combustion chamber temperature and radiation efficiency of the WP model are higher than those of the Kelvin model, while the CO and NOx emissions of WP model have an opposite tendency. When the ceramic foams are composed by WP cell model, under the same pore density and operating parameters, the burner has better combustion performance when the skeleton is thin. The combustion chamber temperature and radiation efficiency are higher, CO and NOx emissions are lower, and the lean combustion limit equivalent ratio is lower.
Study on hydro-thermal coupling heat transfer performance of flue gas-water heat exchanger
Authors: Jia Zile , Liu Dan , Sun Hao , Zhao Meng , Lan Xingbo 
Published: November 2023

Abstract
The finned tube heat exchanger is the core component of the flue gas waste heat utilization system. In order to optimize and control the heat transfer efficiency of the heat exchanger in real time under smart heating conditions, we use the entransy dissipation thermal resistance as a kernel index to assess its heat exchange performance, and Trnsys simulation software is employed to figure out the influence of heat exchanger operating parameters (flue gas inlet velocity) and fin structure parameters (fin height, fin pitch) on heat exchanger heat transfer characteristics. The results show that in a reasonable range, increasing the flue gas inlet velocity can decrease the irreversible loss of heat transfer, obviously improving the heat transfer effect. The pitch and height of the fin also have a large impact on the performance of heat transfer. To significantly promote the performance of the heat exchanger, it is useful to reduce the pitch of the fin and increase the fin height within a reasonable range.
A Power-to-Gas Model Considering the Waste Heat Compensation for Power System Application
Authors: Hu Bohan , Huang Zhi , Lin Danning , Lei Xingyu 
Published: November 2023

Abstract
Power-to-Gas (P2G) technology is a crucial enabler for the new energy-based power system. In this study, a daily economic dispatch model is proposed for the power system operation with P2G units. It incorporates collecting and utilizing waste heat generated by the methanation plant and connected with the Proton exchange membrane (PEM) electrolysis. The simulation results demonstrate that the proposed model achieves a 1.1% decrease in power system operation costs compared to the conventional P2G model. This paper provides valuable insights into the power systems optimization with P2G units for more efficient and cost-effective renewable energy integration into the power grid.
Operation Optimization of Biomass Integrated Energy System Based on Adjustable Heat-to-Electric Ratio
Authors: Song Changcheng , Lu Zhaojun , Zhang Wen , Guo Ao 
Published: November 2023

Abstract
Considering the application of biomass energy, the Biomass Integrated Energy System (BIES) was first constructed. An integrated energy system operation optimization model was proposed with the objective functions of minimizing economic costs and maximizing clean energy utilization. Secondly, according to the characteristics of biomass Cogeneration, the scheme of adjusting the ratio of heat and power is proposed. Finally, a simulation analysis was conducted on a certain region in China. The results indicate that utilizing biomass energy in an integrated energy system can greatly reduce operating costs and improve energy utilization efficiency. After the heat-to-power ratio is adjusted, economic costs can be reduced again by 7.66%, and clean energy utilization can be increased by 6.15%.
Research on the microstructure and properties of Al-Mg-Si alloy with different amounts of B element
Authors: Li Dongqing , Gu Jian , Zheng Shuhui , Liu Shengchun , Si Jiajun 
Published: November 2023

Abstract
The microstructure and properties of Al-Mg-Si alloy with different contents of B element were studied through microstructure, mechanical properties, and conductivity. The results showed that after adding the B element, the precipitates tended to precipitate along grain boundaries. As the amount of the B element increased, the grain coursing was severe, and the tensile strength was slightly improved. However, the impact on hardness was not significant, and the yield strength ratio showed a downward trend. When the addition amount of B element was 0.02wt.%, the Al-Mg-Si alloy had the best conductivity. Therefore, by comprehensive consideration of the conductivity and mechanical properties, the optimal addition amount of B was 0.02 wt.%.
A failure mechanism of IGBT module in MMC and improvement
Authors: Li Cui , Jin Rui , He Feng , Liu Yueyang , Liu Jiang , Wu Tianyi , Tian Baohua , Nie Ruifen , Sun Wanru , Hao Xiamin 
Published: November 2023

Abstract
In modular multi-level converter valves, as the blocked mode happens, the failure in IGBT modules often causes a chain explosion reaction, which masks the initial failure mechanism. The root cause of the failure was that the voltage, consisting of the diode forward voltage and the induced voltage on the parasitic inductance, exceeded the reverse blocking capability of the anti-parallel IGBT. The methods against the failure were studied from three aspects: decreasing the diode’s peak forward voltage, increasing the reverse blocking capability of IGBT, and minimizing the parasitic inductance of the package. It was found that the doping concentration’s effect on the diode’s peak forward voltage is not monotonic. It can be explained from the carrier density distribution during forward recovery transient that lower doping concentration reduces the carrier injection, and higher doping concentration reduces the excess carrier concentration in the doping region. Then, the influence of two buffer designs on the reverse blocking capability of IGBT was compared. It was found that a higher reverse blocking voltage would be achieved when a multi-proton implantation buffer replaced the diffused buffer. And the new design has almost no degradation in forward blocking capability.
An Improved Circuit of Super Source Follower Based on gm-boosting Technology
Authors: Yan Junjie , Liu Qiming 
Published: November 2023

Abstract
An improved circuit of super source follower (SSF) based on gm-boosting technology is proposed in this paper. The traditional SSF circuit is used to reduce the output impedance of the source follower, to provide stronger load capacity as the output stage of the whole circuit, or to push the non-dominant poles in the multi-stage amplifier circuit to a higher frequency position. In the paper, based on the above SSF circuit, an operational amplifier is connected in parallel between the gate and drain of the Nmos as the feedback loop, which takes the drain as the positive input and the gate as the output to form the gm-boosting structure. The advantage of this structure is to further reduce the output resistance through the voltage-voltage feedback characteristics of the gm-boosting structure. Because two loops are formed after adding the structure, as long as the open-loop gain of the operational amplifier is high enough, the loop formed by the operational amplifier will occupy a dominant position, thus shielding the influence of the source follower on the overall output resistance. The output resistance can change with the operational amplifier gain. The simulation results show that the output impedance of the circuit is only about 92 Ω, which is much lower than 1 kΩ of SSF structure.
A Bootstrap Drive and Level Shifting Method for Buck-boost Converter with NMOS as the Main Switch Transistor
Authors: Wang Yapeng , Guo Zhongjie , Qiu Ziyi , Li Mengli , Ren Yuan 
Published: November 2023

Abstract
In the design of DC-DC power supply, compared with a P-type metal oxide semiconductor field effect transistor (PMOS) with the same width-to-length ratio, N-type metal oxide semiconductor field effect transistor (NMOS) as the main switching transistor greatly reduces the on-off loss and improves the conversion efficiency of the system. This article introduces a gate voltage bootstrap and level shifter circuit for a Buck-Boost DC-DC converter with NMOS main switching transistor. The drive voltage between the gate and the source pole of the main switch transistor can be stabilized, which is independent of the switch junction voltage (V
SW) and solves the problem that the drive voltage of the gate is too high or too low due to the influence of the bootstrap voltage in the traditional structure. Based on the 0.18 μm BCD process, the circuit design and physical implementation of the proposed method are verified. The test results show that the bootstrap drive circuit functions normally and the bootstrap drive voltage is about 5 V when the input voltage is 2.9~4.5 V and the output voltage is −2~-5 V. In addition, the proposed gate-level shifting circuit can reduce the drive delay of the main switch transistor to less than 12 ns.
Reaction Controllable preparation and electrocatalytic performance of two-dimensional sulfides
Authors: XinWang  , Yang Qi Chao , Wang Hai tao , Zheng Yu , Zhong Geng hang , Zhao Jiang wei 
Published: November 2023

Abstract
Two-dimensional sulfide has been widely recognized as a promising new type of catalyst to replace precious metals due to its adjustable electronic structure, low cost, and high stability. In this paper, monolayer molybdenum disulfide (MoS2) and layer-controlled tungsten disulfide (WS2) were successfully prepared by chemical vapor deposition (CVD). The two prepared materials’ morphology, structure, and thickness were investigated. The catalytic performance of two-dimensional sulfides was studied under an acidic environment. The results exhibit good catalytic performance toward hydrogen evolution with 63.6 mV/dec low Tafel slope of MoS2 and 72.8 mV/dec of WS2.
A low-power and high-gain frontend for GHz application using trans-impedance amplifier for fast particle detection
Authors: Kholili M.J. , Miyahara M. , Shoji M. , Kurniawan E. , Prakosa J.A. , Tanaka M.M. 
Published: November 2023

Abstract
In this paper, we present a front-end for gigahertz
applications, FGATI, which utilizes a transimpedance amplifier
design to amplify the current signal from a diamond particle
detector. The transimpedance amplifier design adopts a
flipped-voltage-follower-based current-mirror (FVF-CM) topology as
the input stage, offering advantages such as low power consumption,
large transimpedance gain, gigahertz bandwidth, and reasonable noise
levels. The FVF-CM topology was realized to improve noise reduction
with a fully differential output configuration. The design was
implemented as an ASIC chip using 65 nm CMOS silicon technology. The
bandwidth measurement of the FGATI prototype demonstrated a 3-dB
bandwidth of 1.2 GHz. Furthermore, the amplifier's power
consumption is low, drawing only 7.2 mW/channel from a 1.2 V power
supply, including the buffer stage. The measurement of the FGATI
output signal indicated an excellent transimpedance gain of
79.2 dBΩ and a noise level of
6.7 mVrms. These findings highlight the feasibility
and effectiveness of the proposed front-end design in high-frequency
applications.