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Effects of Active and Reactive Power control on Inertia in DFIG-Based Wind Turbines

IEEE Transactions on Power Electronics 2025年

作者： Guo, Xiang Tang, Qingbo Zhu, Donghai Zhou, Yini Zou, Xudong Hu, Jiabing Kang, Yong China University of Mining and Technology School of Electrical Engineering Xuzhou 221116 China Hubei Key Laboratory of Marine Electromagnetic Detection and Control Wuhan 430064 China Huazhong University of Science and Technology State Key Laboratory of Advanced Electromagnetic Technology School of Electrical and Electronic Engineering Wuhan 430074 China

The inertia analysis for wind turbines (WTs) typically focuses on the electromechanical timescale. Active power control (APC) and phase-locked loop (PLL) are essential considerations while reactive power control (RPC) is often deemed negligible, particularly in stiff grid. However, such assumptions may be inappropriate. Therefore, this article aims to comprehensively examine the effects of APC and RPC on the inertia for doubly fed induction generator (DFIG)-based WTs. Firstly, phase motion models are developed by incorporating various combinations of control loops, including APC, RPC, and different PLL configurations. Subsequently, the impacts of the APC and RPC on the inertia are examined in detail. The analysis reveals that the APC diminishes inertia, whereas the RPC significantly enhances the inertia. Additionally, special attention should be given to phase characteristics of the inertia transfer function, as they can substantially influence inertial performance. Furthermore, an improved frequency support method is proposed, which achieves superior frequency response without necessitating the PLL bandwidth to be adjusted to extremely low values, such as 1 Hz or lower. Finally, the analysis and the proposed method are validated through experiments. © 1986-2012 IEEE.

关键词： active power control (APC) doubly fed induction generator (DFIG) inertia control reactive power control (RPC) wind turbine

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Acquisition method for effective electromagnetic parameters of honeycomb structures based on FNN-INN

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Journal of Applied Physics 2025年第17期137卷

作者： Zhang, Fan Chen, Xin Huang, Xiangguo Pan, Jingwei Yu, Dingfeng He, Bokun Wang, Juan Wu, Minghu Zhou, Tong Zhang, Yunhua Hubei Key Laboratory for High-efficiency Utilization of Solar Energy and Operation Control of Energy Storage System Hubei University of Technology Wuhan430068 China Hubei Engineering Research Center for Safety Monitoring of New Energy and Power Grid Equipment Hubei University of Technology Wuhan430068 China Hubei Key Laboratory of Marine Electromagnetic Detection and Control Wuhan430064 China Wuhan Second Ship Design and Research Institute Wuhan430064 China School of Electronic Information Wuhan University Wuhan430072 China

The effective electromagnetic parameters of honeycomb composite structures are crucial for studying their electromagnetic properties. However, most existing homogenization methods are based on static or quasi-static equivalence, considering only the effects of the electromagnetic parameters and the volume fraction of each phase medium on the effective electromagnetic parameters, while neglecting the influence of honeycomb aperture parameters. To address this, this paper proposes a novel homogenization method systematically analyzing the influence of honeycomb structure parameters, particularly aperture parameters, on the effective electromagnetic parameters. This method enables the direct acquisition of the effective electromagnetic parameters of honeycomb structures from their geometric parameters and the material parameters of each phase medium. First, this paper uses the geometric parameters of the honeycomb structure and the material parameters of each phase medium as inputs to construct a forward neural network for predicting the reflection coefficient (S11 parameter). Subsequently, the S11 parameter matrix is rapidly constructed using the reflectance formula. Correlation analysis and global feature extraction in two-dimensional space yield the feature vector matrix, representing the transformed S11 parameters. These are used as inputs to construct an inverse neural network to predict the effective electromagnetic parameters of the honeycomb structure. Finally, this paper reconstructs reflectance curves for two-layer and three-layer honeycomb structures, with mean absolute error below 0.26, validating the proposed method's effectiveness and accuracy. © 2025 Author(s).

关键词： Homogenization method

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A control Strategy for Input-Parallel Output-Parallel Phase-Shift Full-Bridge DC-DC Converter 5

A Control Strategy for Input-Parallel Output-Parallel Phase-...

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5th International Conference on Power and Energy Technology, ICPET 2023

作者： Yang, Wentie Xu, Lin Zhang, Ping Jiang, Weibin Hubei Key Laboratory of Marine Electromagnetic Detection and Control Wuhan China

ISBN: (纸本)9798350339673

This manuscript proposed a coordinated control method based on droop characteristic for an input-parallel output-parallel (IPOP) phase-shift full-bridge (PSFB) DC-DC converter. By introducing a variable virtual impedance and a DC bias voltage in the control loop, the output current sharing is got, the output voltage drop is compensated, and the circulating current is suppressed. The proposed control strategy is validated by means of a 3-kW experimental prototype with two IPOP PSFB DC-DC converter modules at 100 kHz. And a maximum efficiency of 95.3 % is achieved. © 2023 IEEE.

关键词： Current sharing droop control input-parallel output-parallel phase-shift full-bridge DC-DC converter virtual impedance

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Encapsulating PDA-wrapped carbon fibers in waterborne epoxy zinc-rich coatings to enhance the utilization and bonding strength of Zn particles

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Colloids and Surfaces A: Physicochemical and Engineering Aspects 2025年 722卷

作者： Wan-Juan Jiang Haleema Sadia Ding-Feng Yu Pan-Feng Zheng Ze-Hua Dong Hubei Key Laboratory of Material Chemistry and Service Failure School of Chemistry and Chemical Engineering Huazhong University of Science and Technology Wuhan 430074 China Hubei Key Laboratory of Marine Electromagnetic Detection and Control Wuhan Second Ship Design and Research Institute Wuhan Hubei Province 430064 China

Carbon fiber (CF) has been widely employed to enhance the mechanical properties of polymers owing to its superior chemical inertness, high tensile strength, and high conductivity. This study presents a surface chemistry-driven approach to enhance the corrosion resistance and mechanical performance of waterborne zinc-rich epoxy (ZRE) coatings by incorporating polydopamine (PDA)-coated carbon fibers (CF). The PDA layer, abundant in catechol and amine groups, facilitates dual interfacial bonding mechanisms—π-π stacking interactions and hydrogen bonding with the epoxy matrix. This synergistic interfacial engineering not only enhances the colloidal dispersion of CF but also results in an eightfold increase in adhesion strength and a 100 % improvement in tensile strength compared to the pristine ZRE coating. Additionally, the low-frequency impedance (|Z| at 0.01 Hz) is elevated by two orders of magnitude, and the cathodic protection duration provided by Zn is extended more than twofold relative to unmodified ZRE coating. These enhancements are attributed to two synergistic mechanisms: PDA-enhanced CF dispersion forming continuous conductive networks that facilitate electron transfer between zinc particles and the substrate, and amine-epoxy covalent bonding, constructing hierarchical barrier structures that hinder electrolyte penetration.

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The Effect of Vehicles Attitude Angle Error on Magnetic Compass Heading Estimation

The Effect of Vehicles Attitude Angle Error on Magnetic Comp...

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2023 International Conference on Frontiers of Ocean Science and Technology, ICFOST 2023

作者： Li, Ziyaun Zhang, Yanmin Yang, Wentie Hubei Key Laboratory of Marine Electromagnetic Detection and Control Hubei Province Wuhan430064 China Wuhan Second Ship Design and Research Institute Hubei Province Wuhan430064 China

The three-component magnetic sensor is used to measure the heading of the vehicle. Under working, the magnetic sensor be rotated to the horizontal plane according to the attitude angle of the vehicle, and then the heading estimation is performed. However, the vehicle's attitude angle measurement errors affect the accuracy of the magnetic sensor measurement's east and north components and then lead to a false heading result. Based on the relation of magnetic field measurement error and magnetic heading error, the effect model of geomagnetic measurement error on magnetic heading error is derived in this paper. Finally, the characteristics of attitude angle errors on magnetic heading are verified by experiments, and the results show that particular angles can avoid the magnetic compass's effect by the vehicle's attitude angle error. © Published under licence by IOP Publishing Ltd.

关键词： Magnetic sensors

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Research on State Monitoring of Ship Power System Based on Multi-channel Data Acquisition System 3

Research on State Monitoring of Ship Power System Based on M...

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3rd International Conference on Information Science and Education, ICISE-IE 2022

作者： Li, Chengyang Yu, Shuai Peng, Cong Shi, Peng Wuhan Institute of Marine Electric Propulsion Wuhan China Hubei Key Laboratory of Marine Electromagnetic Detection and Control Wuhan Second Ship Design and Research Institute Wuhan China

ISBN: (纸本)9798350320381

The multi-channel high real-time data acquisition and processing system is a key component of the normal and reliable operation of the modern intelligent ship electric power system, which is crucial to the real-time monitoring of the power quality of the electric power system and the operation status information of the electric power system equipment. By analyzing the architecture of multi-channel data acquisition system and the principle of data acquisition and data processing, this paper designs a multi-channel data acquisition and processing system, and builds a physical system test platform. The actual operation proves that this system can meet the needs of power system data acquisition in high real-time and high synchronization. © 2022 IEEE.

关键词： Data acquisition

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Adaptive intelligent reconfiguration of ship power network based on improved particle swarm optimization algorithm 4

Adaptive intelligent reconfiguration of ship power network b...

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4th International Conference on Robotics, Intelligent control and Artificial Intelligence, RICAI 2022

作者： Yu, Shuai Peng, Cong Zhang, Zhengqing Li, Chengyang Hubei Key Laboratory of Marine Electromagnetic Detection and Control Wuhan Second Ship Design and Research Institute Wuhan China Wuhan Institute of Marine Electric Propulsion Wuhan China

ISBN: (纸本)9781450398343

Aiming at the problems of low efficiency and low intellectualization of traditional ship power network fault reconfiguration and recovery, this paper analyzed the characteristics of ship power network and the requirements of fault reconfiguration, established a mathematical model for power and importance evaluation, and presented an improved particle swarm optimization algorithm based on adaptive weights to realize intelligent power network reconfiguration. The numerical results showed that this method is superior to the traditional algorithm in the speed and fitness of fault reconfiguration, can better meet the requirements of adaptive intelligent reconfiguration of ship power network, and can effectively ensure the continuity of power supply in power system. © 2022 ACM.

关键词： Ships

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Research on Heat Dissipation Characteristics of Protective Fluid for Immersed Lithium-ion Battery Module 2

Research on Heat Dissipation Characteristics of Protective F...

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2022 2nd International Conference on Advanced Manufacturing Technology and Electronic Information, AMTEI 2022

作者： Yu, Shuai Xu, Yanzhe Liu, Fei Wang, Yongmao Leng, Feng Hu, Qiwei Wuhan Second Ship Design and Research Institute Hubei Wuhan430205 China Wuhan Institute of Marine Electric Propulsion Hubei Wuhan430064 China Hubei Key Laboratory of Marine Electromagnetic Detection and Control Hubei Wuhan430205 China

In this article, the immersed lithium-ion battery module's liquid cooling and heat dissipation scheme are studied, and the heat dissipation characteristics of the large-capacity battery module after the battery is grouped are analyzed. The simulation models of the liquid cooling system's five inlet and outlet layouts are established. The numerical results show that immersed liquid cooling method can effectively prevent and reduce the temperature rise of large-capacity battery modules. The layout of the imports and exports can influence the heat transfer effect, which is of guiding significance for the design of immersed protective fluid heat dissipation of lithium-ion battery modules. © Published under licence by IOP Publishing Ltd.

关键词： Lithium-ion batteries

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Thermal Management of Lithium-ion Battery based on Flow and Heat Transfer Entropy Generation Analysis 2

Thermal Management of Lithium-ion Battery based on Flow and ...

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2nd International Conference on New Energy and Power Engineering, ICNEPE 2022

作者： Yu, Shuai Xu, Yanzhe Yang, Shuai Leng, Feng Liu, Fei Wang, Yunfan Hu, Qiwei Zhao, Yutian Li, Zhoupin Wang, Zhen Wuhan Second Ship Design and Research Institute Hubei Wuhan430205 China Wuhan Institute of Marine Electric Propulsion Hubei Wuhan430064 China Hubei Key Laboratory of Marine Electromagnetic Detection and Control Hubei Wuhan430205 China

In order to realize the problem of efficient heat dissipation management of lithium battery modules, the thermal management model of liquid cooled lithium-ion battery modules is studied in this paper. The entropy increase characteristics caused by the flow process and heat transfer process of the lithium-ion battery module under three liquid cooling inlet and outlet modes are analyzed by numerical simulation, and the internal mechanism of the local entropy generation characteristics of the lithium-ion battery module is clarified. The numerical results show that the 3×3 MIMO is the best model considering the heat dissipation and fluidity of the protective fluid. In addition, the results of this study can provide effective design guidance for thermal management of lithium-ion batteries. © Published under licence by IOP Publishing Ltd.

关键词： Lithium-ion batteries

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Research on Effectiveness Evaluation Method of Acoustic detection Equipment Based on Grey Clustering 7

Research on Effectiveness Evaluation Method of Acoustic Dete...

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7th International Conference on Advanced Algorithms and control Engineering, ICAACE 2024

作者： Liu, Zikang Yang, Wentie Wang, Zuoshuai Xu, Yidong Yantai Research Institute Harbin Engineering University Shandong Yantai China Hubei Key Laboratory Of Marine Electromagnetic Detection And Control Wuhan Second Ship Design And Research Institute Hubei Wuhan China

ISBN: (纸本)9798350361445

Nowadays, marine equipment develops rapidly, especially underwater acoustic detection equipment plays an important role in resource exploration, military defense and other fields. How to evaluate the detection efficiency of acoustic detection equipment is a key issue, which can not only provide reference direction for the improvement of equipment design, but also evaluate different types of acoustic detection products under the same ocean hydrological conditions. In view of the characteristics such as small evaluation data, incomplete information and uncertainty in the evaluation process, taking sonar products as an example, this paper will introduce a gray clustering evaluation method of acoustic detection equipment effectiveness based on the combined weight method of FAHP-CRITIC and carry out a numerical example analysis. © 2024 IEEE.

关键词： Underwater acoustics

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