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检索条件"机构=Science and Technology on Ship Integrated Power System Technology Laboratory"

共 390 条记录，以下是81-90 订阅

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A Novel Key-value based Real-time Data Management Framework for ship integrated power Cyber-Physical system

A Novel Key-value based Real-time Data Management Framework ...

引用

2019 IEEE PES Innovative Smart Grid Technologies Asia, ISGT 2019

作者： Shang, Chengya Bao, Xianqiang Fu, Lijun Xia, Li Xu, Xinghua Xu, Chengcheng National Key Laboratory of Science and Technology on Vessel Integrated Power System University of Naval Engineering Wuhan China

ISBN: (纸本)9781728135205

The new generation ship integrated power system (IPS) realizes high level informatization for various physical equipments, and gradually develops to a cyber-physical system (CPS). The future trend is collecting ship big data to achieve data-driven intelligence for IPS. However, traditional relational data management framework becomes inefficient to handle the real-time data processing in ship integrated power cyber-physics system. In order to process the large-scale real-time data that collected from numerous sensors by field bus of IPS devices within acceptable latency, especially for handling the semi-structured and non-structured data. This paper proposes a novel key-value data model based real-time data management framework, which enables batch processing and distributed deployment to acquire time-efficiency as well as system scalable. We implement a real-time data management prototype system based on an open source in-memory key-value store. Finally, the evaluation results from the prototype verify the advantages of novel framework compared with traditional solution. © 2019 IEEE.

关键词： Information management

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Real-time Simulation Hardware-in-the-loop Test Platform for DC integrated power system Containing a Large Number of Switches 5

Real-time Simulation Hardware-in-the-loop Test Platform for ...

引用

5th IEEE International Electrical and Energy Conference, CIEEC 2022

作者： Hao, Xiaoliang Fu, Liju Ma, Fan Li, Chun Naval University of Engineering National Key Laboratory of Science and Technology on Vessel Integrated Power System Wuhan China

ISBN: (数字)9781665411042

ISBN: (纸本)9781665411042

In order to analyze the DC integrated power systems containing a large number of switches accurately and quantitatively, this paper constructs a real-time simulation hardware-in-the-loop test platform. The platform integrates three key technologies, the first one is the real-time simulation method of large-scale power systems. This method is composed of modeling method of crucial equipment, network partitioning method, and electrical decoupling method. The second one is the construction of asynchronous communication interface. This platform realizes the function of uploading the system data to the database by UDP protocol and sending the control instructions to the system model by TCP protocol. The last one is the joint debugging of physical equipment and real-time simulator. Taking the integrated power system (IPS) as an example, the power system model is simulated by the real-time simulator, the network and energy management system are actual physical equipment, constructing the real-time simulation hardware-in-the-loop experimental platform. The real-time simulation performance and dynamic calculation results of the system verify the effectiveness of the real-time simulation method of large-scale power systems and the superiority of the platform. © 2022 IEEE.

关键词： Hardware-in-the-loop simulation

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Impacts of phase noise on the performance of adaptive side-lobe cancellation system 4

Impacts of phase noise on the performance of adaptive side-l...

引用

4th IEEE International Conference on Electronic Information and Communication technology, ICEICT 2021

作者： Zhou, Minglei Wang, Qing He, Fangmin Zhang, Yunshuo Luo, Kang Meng, Jin National Key Laboratory of Science and Technology on Vessel Integrated Power System Naval University of Engineering Wuhan China

ISBN: (纸本)9781665432030

Adaptive side-lobe cancellation (SLC) is an effective means of anti-jamming in communication systems. To realize SLC in digital domain, down-conversion is required to convert the signals into baseband. However, down-conversion circuits introduce phase noise into the output signals, which degrades the SLC performance. This paper establishes new mathematical models of SLC taking into account phase noise to quantify the impacts of phase noise of different levels. The theoretical models are verified by simulations. The simulation results show that phase noise is a critical factor that limits the interference cancellation ratio (ICR) of SLC. In addition, the effect of phase noise is not related with the specific form of the received signals, but only the level of phase noise. The theoretical models in our paper can be used to find the required phase noise levels to meet the required SLC performance. ©2021 IEEE

关键词： Phase noise

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Mixed-Type Open-Circuit Fault Diagnosis for NPC Inverters Using a Dual-Input CNN 4

Mixed-Type Open-Circuit Fault Diagnosis for NPC Inverters Us...

引用

4th IEEE China International Electrical and Energy Conference, CIEEC 2021

作者： Shen, Haolan Tang, Xin Ai, Sheng Fan, Yaxiang Luo, Yifei Xie, Feng Naval University of Engineering National Key Laboratory of Science and Technology on Vessel Integrated Power System Wuhan China

ISBN: (纸本)9781728171494

The different open-circuit fault causes (i.e. terminal block damage, bonding wire fracture, driver circuit failure, et al.) lead to both one-way open-circuit and two-way open-circuit in neutral-point-clamped (NPC) inverters, namely the mixed-type open-circuit fault. In order to achieve a high diagnosis accuracy, the two types of open-circuit manifestations are simulated with two simulation ways to acquire mixed monitoring signal samples, on this basis, a diagnosis method using a dual-input convolutional neural network (CNN) is proposed. The method uses the three-phase currents as the main monitoring signals, and the six midpoint voltages of the upper and down half bridge arms as the auxiliary monitoring signals for the open-circuit fault diagnosis. The effectiveness of the method is validated by simulation, and the effects of different sample durations and training sample numbers on the network training and diagnosis results are analyzed quantitatively. © 2021 IEEE.

关键词： Failure analysis

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Optimizing design of multi-coil solenoid HTS magnet by PSO algorithm

Optimizing design of multi-coil solenoid HTS magnet by PSO a...

引用

2018 IEEE International Conference on Applied Superconductivity and Electromagnetic Devices, ASEMD 2018

作者： Huang, Wen Chen, Jun Quan National Key Laboratory of Science and Technology on Vessel Integrated Power System Naval University of Engineering Wuhan China

ISBN: (纸本)9781538624944

The superconducting magnet has been used more and more widely due to the advances in refrigeration technology and superconducting material. Consequently, its design requirements become higher. This paper combines particle swarm optimization (PSO) and numerical calculation using finite-element (FE) for the rapidly-optimized design of multi-coil solenoid high-temperature-superconducting (HTS) magnet which must satisfy the need of electromagnetism. On this basis, the length of the material used will be minimized. With the optimum design of a magnetic fluid propeller as an example, the second-generation HTS material is selected for developing a superconducting magnet prototype, which is not lower than 6T in central magnetic field strength, not less than 340∗100mm2 in its uniform region and not less than 100mm in diameter. © 2018 IEEE.

关键词： Superconducting magnets

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Design and Simulation of an Air-Cored Permanent Magnet Direct-Driven Actuator for Missile 13

Design and Simulation of an Air-Cored Permanent Magnet Direc...

引用

13th International Symposium on Linear Drives for Industry Applications, LDIA 2021

作者： Liu, Yingquan Lu, Junyong Long, Xinlin National Key Laboratory of Science and Technology on Vessel Integrated Power System Naval University of Engineering Wuhan China

ISBN: (纸本)9781728172101

Missile steering gear is the executive mechanism of missile control system, its performance directly affects the precision of missile guidance and control. An air-cored U-type permanent magnet linear motor is designed in this paper to simplify the structure of the missile steering system, reduce the connection cables and improve the reliability. The motor employs double side cambered PMs as excitation, and the air-cored coils directly drives the rudder blade. By canceling the reduction gear, the transmission efficiency of the steering system is enhanced. Moreover, the air-cored actuator can improve the response performance due to its light weight. The analytical thrust is derived in this paper. The design structure is optimized by finite element simulation. The transient calculation shows that the designed direct-driven actuator can achieve the expected thrust theoretically. © 2021 IEEE

关键词： Linear motors

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Multi-Virtual Inertia Coordinated Control technology for AC/DC Hybrid Micro-Grid 8

Multi-Virtual Inertia Coordinated Control Technology for AC/...

引用

8th IEEE International Conference on Advanced power system Automation and Protection, APAP 2019

作者： Yunfeng, Lin Lijun, Fu Li, Xia Xueping, Gao Naval University of Engineering National Key Laboratory of Science and Technology on Vessel Integrated Power System Wuhan China

ISBN: (纸本)9781728117225

New energy power generation equipment and loads can be connected to AC / DC hybrid microgrid flexibly. In order to achieve system frequency and voltage stability, and make full use of the inertia of energy storage, wind turbines, etc. to enhance the anti-disturbance capability of the system. With the flexibility of power control in the AC/DC hybrid micro-grid, both sides of the AC and DC can achieve mutual support of power. In this paper, a virtual inertial joint control technique is proposed in combination with VSG control and virtual capacitor control. Simulation experiments show that the proposed method can effectively improve AC side damping and reduce voltage, frequency and power oscillation recovery time under given system parameters. © 2019 IEEE.

关键词： power quality

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The charging and discharging balance control strategy of power batteries for hybrid energy storage

The charging and discharging balance control strategy of pow...

引用

2016 International Symposium on power Electronics, Electrical Drives, Automation and Motion, SPEEDAM 2016

作者： Ren, Zhou Lu, Junyong Wang, Guangsen Long, Xinlin Xiao, Zhang Chao, Li National Key Laboratory of Science and Technology on Vessel Integrated Power System Naval University of Engineering Wuhan China

ISBN: (纸本)9781509020676

shipboard hybrid energy storage power system includes tens of thousands of single batteries. The performance of each single cell can't be completely consistent. Small differences will gradually increase after repeated charging and discharging, which may lead to a sharp decline of the performance and the cycle life of the battery. For imbalance performance between each single cell of shipboard hybrid energy storage, this paper proposes a multi-mode balance control method, which integrates fuzzy PID charging equalizer, sequential discharging equalizer and floating charging equalizer, in order to reduce the differences between the battery packs. According to the proposed balance control strategy, this paper takes an experiment on the battery packs for hybrid energy storage which are composed of lead-acid batteries, and achieves a better balance result. © 2016 IEEE.

关键词： Equalizers

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AN EFFICIENT SWITCHING RIPPLE COMMUNICATION METHOD BASED ON NON-ORTHOGONAL FSK MODULATION 18

AN EFFICIENT SWITCHING RIPPLE COMMUNICATION METHOD BASED ON ...

引用

18th International Conference on AC and DC power Transmission, ACDC 2022

作者： Hu, Anqi Meng, Qingyun Liu, Cang Huo, Dongyang National Key Laboratory of Science and Technology on Vessel Integrated Power System Naval University of Engineering Wuhan China

ISBN: (数字)9781839537615

ISBN: (纸本)9781839537615

The well-known PSDM (power/signal dual modulation) technology, which adopts the switching ripples of output voltages as the carriers of information, enables digital communication between power electronic converters without dedicated communication lines. However, the existing FSK (frequency shift keying) and PSK (phase shift keying) modulation methods both have to be carried out under the orthogonality rule, which makes it difficult for the ripple communication rate to reach the Nyquist rate. In this paper, an efficient switching ripple communication method based on non-orthogonal FSK modulation is proposed, which can achieve significantly higher bandwidth efficiency. By solving the correlation matrix equation during demodulation process, one can decode the signals carried by different carrier frequencies, which are not necessarily orthogonal to each other within the demodulation cycle. Some special measures are taken to cope with the symbols of variable lengths. Research shows that, by taking the approach based on non-orthogonal FSK modulation, one can achieve a communication rate of about 2.3 times that of the method based on orthogonal FSK modulation, which can probably exceed the Nyquist rate. Numerical results of random coding and decoding verify the validity of the theoretical method. © ACDC 2022. All rights reserved.

关键词： Demodulation

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A Novel Circulating Current Suppression Strategy of Parallel Three-level Inverters in Flywheel Energy Storage system with Zero-sequence Voltage Injection

A Novel Circulating Current Suppression Strategy of Parallel...

引用

2022 IEEE Transportation Electrification Conference and Expo, Asia-Pacific, ITEC Asia-Pacific 2022

作者： Li, Zhongrui Nie, Ziling Ai, Sheng Xu, Jie Cao, Meihe Naval University of Engineering National Key Laboratory of Science and Technology on Vessel Integrated Power System Wuhan China

ISBN: (数字)9781665492065

ISBN: (纸本)9781665492065

The parallel operation of three-level inverters can increase the power rating for flywheel energy storage system. However, the zero-sequence circulating current inevitably emerges owing to the excitation of the common-mode voltage difference, which can lead to current distortion and system loss. In addition, parallel three-level inverters have nonlinear characteristics, which can affect the zero-sequence circulating current. Therefore, a novel circulating current suppression strategy with zero-sequence voltage injection is proposed in this paper. A nonlinear equivalent model of the common-mode voltage difference is developed. Then, the zero-sequence voltage injection method is used to suppress the zero-sequence circulating current. Compared with the traditional suppression strategy, the novel strategy can achieve better performance. Simulation and experimental results prove the validity of the theoretical analysis and the feasibility of the proposed strategy. © 2022 IEEE.

关键词： Flywheels

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