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检索条件"机构=Aviation Key Laboratory of Science and Technology on Electromechanical System Integration"

共 219 条记录，以下是21-30 订阅

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Optimization Design of Electrical Axial Fan Based on NSGA - II Algorithm 6th

Optimization Design of Electrical Axial Fan Based on NSGA - ...

引用

6th China Aeronautical science and technology Conference, CASTC 2023

作者： Zhao, Yu-Shu AVIC Nanjing Engineering Institute of Aircraft Systems Nanjing211106 China Aviation Key Laboratory of Science and Technology On Aero Electromechanical System Integration Nanjing211106 China

ISBN: (纸本)9789819988631

A fast sequencing genetic algorithm, NSGA-II is applied to the performance optimization of axial flow electric fans on multi eletric aircraft to improve the effectiveness of environmental control systems (ECS) and reduce fuel penalty. The degree of sweep and curve of blades is set as the optimization parameters, while low power and large flow rate is set as the optimization objectives to optimize the initial design. NSGA-II algorithm is used to control the optimization parameters, and an automated simulation analysis process is established to achieve automatic iteration and optimization. The power of the optimized fan model is reduced by 8.8% compared to the prototype. The results show that the method used in this paper has good effects in dealing with multi-objective and multi-parameter performance optimization problems of axial flow fans. The method has also certain reference value for the optimization design of other turbomachine. © 2024, Chinese Society of Aeronautics and Astronautics.

关键词： Multiobjective optimization

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Research on the Transient Temperature Field of the High-Speed Permanent-Magnet Motor for Dragging Pulsed Alternator 18th

Research on the Transient Temperature Field of the High-Spee...

引用

18th Annual Conference of China Electrotechnical Society, ACCES 2023

作者： Wan, Yuan Zhang, Xu Jia, Yuqi Guo, Jian Li, Wenlong School of Automation Nanjing University of Science and Technology Nanjing10094 China Aviation Key Laboratory of Science and Technology on Aero Electromechanical System Integration AVIC Nanjing Engineering Institute of Aircraft System Nanjing211102 China

ISBN: (纸本)9789819710713

For dragging the pulsed alternator, the high-speed permanent-magnet synchronous motor (HSPMSM) is required with a high-power density. Considering the specific working condition that the speed and load both change with time, the steady-state thermal analysis is not applicable to check the effectiveness of thermal design for the dragging motor. This paper studies the characteristics of the losses of a 300 kW, 12000 rpm dragging motor with the variation of time. Then based on the fluid-solid coupling analysis method, the transient temperature field analysis was then carried out. The variation of temperature field distribution over the time and the influence of discharging times are both discussed. With the pulsed alternator discharging 20 bursts continuously, that is 60 shorts, the temperature rise of the dragging motor is 60.9% of that of the steady-state with the highest speed and maximum power. This paper lays the foundation for the later design and optimization of the dragging motor. © Beijing Paike Culture Commu. Co., Ltd. 2024.

关键词： Permanent magnets

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The Research of A Plate Fin Cold Plate Characters Based on Numerical Simulation

The Research of A Plate Fin Cold Plate Characters Based on N...

引用

2022 CSAA/IET International Conference on Aircraft Utility systems, AUS 2022

作者： He, Pengcheng Zhao, Pengtao Hu, Liang Wang, Ruiqi Aviation Key Laboratory of Science and Technology on Aero Electromechanical System Integration Nanjing China

ISBN: (数字)9781839537769

ISBN: (纸本)9781839537769

The cold plate which constructs by plate fins through 36% aqueous solutions of ethylene glycol to control the heated bottom face to below 28°C, was simulated by Fluent software. The properties such as density and specific heat and thermal conductivity and viscosity of 36% aqueous solutions of ethylene glycol were derived from the doctor thesis of R Wang by neural network method. The low Re k-Ε model was used with shell wall type. The inlet boundaries from 1000Pa to 2500Pa were analysed, the two passes of cold plate flow detail patterns were given, non-uniform velocity field has shown, all parts of the cold plate are coupling. The distributions have shown that pressure and velocity fields nearly with 2D characters, while the temperature field own 3D characters, Performance of cold plate needs to improve the heat sink utilization. The full model shall be considered formore exact results. © 2022 IET Conference Proceedings. All rights reserved.

关键词： Ethylene glycol

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Functional simulation of the cabin pressure control system based on stateflow 3

Functional simulation of the cabin pressure control system b...

引用

2024 3rd International Conference on Aerospace and Control Engineering, ICoACE 2024

作者： Wang, Yehao Meng, Fanxin Yang, Yonghui Wang, Shun Aviation Key Laboratory of Science and Technology on Aero Electromechanical System Integration Jiangsu Nanjing211106 China AVIC Nanjing Engineering Institute of Aircraft Systems Jiangsu Nanjing211106 China

The cabin pressure control system(CPCS) is an important part of the aircraft environmental control system. In the actual flight process, it needs to achieve different functions according to the working scene. In this paper, the architecture and working principle of the CPCS system are summarized, and the functions of the system are analyzed;the control logic of each function is designed and simulated by the Stateflow platform. The results show that the control logic and its transition constraints designed in this paper can meet the functional requirements of the system, and the dynamic response is rapid, which can be used for the cabin pressure control system of civil aircraft system function design and verification to provide a reference. © 2025 Institute of Physics Publishing. All rights reserved.

关键词： Aircraft control

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Robust Deadbeat Finite-Set Predictive Torque and Flux Control for PMSM with Dynamic Model

Robust Deadbeat Finite-Set Predictive Torque and Flux Contro...

引用

2023 IEEE International Conference on Predictive Control of Electrical Drives and Power Electronics, PRECEDE 2023

作者： Wang, Taoming Zhang, Mengbo Chen, Lijun Xiao, Xi Chen, Zhe Luo, Guangzhao Northwestern Polytechnical University School of Automation Xi'an China Aviation Key Laboratory of Science and Technology on Aero Electromechanical System Integration Nanjing China

ISBN: (纸本)9798350396867

Deadbeat finite-set predictive torque and flux control has the advantages of fast dynamic response and reduced computational burden, but the system robustness is still a challenge in real-time implementation. This paper presents a novel deadbeat finite-set predictive torque and flux control strategy with a modified dynamical predictive model for permanent magnet synchronous motor (PMSM) drives to improve the robustness against mismatched parameters. By establishing sensitivity functions, the robustness of the system can be digitally quantified. The torque and flux predictive models with dynamic weighting factors are proposed to minimize phase current distortions and torque tracking errors caused by parameter variations. Finally, the simulation results verify the improved robustness of the proposed method. © 2023 IEEE.

关键词： Model predictive control

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Research on Fault-Tolerant Reconstruction technology for Aerospace electromechanical systems Based on CPLD 7

Research on Fault-Tolerant Reconstruction Technology for Aer...

引用

7th IEEE International Electrical and Energy Conference, CIEEC 2024

作者： Zhang, Xiaokai Zhao, ZhiWen Wei, Qian Liu, Chunqiang A Vic Nanjing Engineering Institute of Aircraft Systems Aviation Key Laboratory of Science and Technology on Aero Electromechanical System Integration Nanjing China Hangzhou Institute of Technology Xidian University Xian China

ISBN: (纸本)9798350359558

To address the high reliability requirements of aviation electromechanical control systems, this paper focuses on exploring control reconfiguration strategies for aviation electromechanical control systems. The article first establishes a reconfiguration strategy combining redundancy switching with robustness and adaptive capabilities for typical electromechanical control systems. Building upon this foundation, a fault-tolerant strategy is proposed specifically for the core controller of electromechanical control systems in aviation. © 2024 IEEE.

关键词： Fault tolerance

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Semi-Physical Simulation of EHA Electric Drive system 7

Semi-Physical Simulation of EHA Electric Drive System

引用

7th IEEE International Electrical and Energy Conference, CIEEC 2024

作者： Mi, ChangBao Zhao, ZhiWen Zhou, JingXing Avic Nanjing Engineering Institute of Aircraft Systems Aviation Key Laboratory of Science and Technology on Aero Electromechanical System Integration Nanjing China Hangzhou Institute of Technology Xidian University Xian China

ISBN: (纸本)9798350359558

Electro-hydrostatic actuator (EHA) electric drive system is commonly used in more electric aircraft (MEA) and can improve aircraft performance. This article designs a high-speed permanent magnet synchronous motor (PMSM) with a rated speed of 12,000 rpm for EHA. It establishes the design and system simulation of a semi-physical real-time simulation model based on the EHA electric drive model, verifying the normal operation of the EHA electric drive system's load spectrum. This provides a reliable basis for the highly integrated and high-performance design of the EHA system, thus improving the research and development efficiency. © 2024 IEEE.

关键词： More electric aircraft

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Research On Stability Characteristics Of Three-Wheel Refrigeration system

Research On Stability Characteristics Of Three-Wheel Refrige...

引用

2022 CSAA/IET International Conference on Aircraft Utility systems, AUS 2022

作者： Zhou, Yue Aviation Key Laboratory of Science and Technology on Aero Electromechanical System Integration Nanjing211106 China

ISBN: (数字)9781839537769

ISBN: (纸本)9781839537769

Simulation on three-wheel refrigeration system is carried out, the result of which is compared with the existing research data. Further, the temperature disturbance characteristics of the system is analysed combined with the main system disturbance source. Simulation results indicate that the temperature or moisture of the bleed air or ram air disturbance brings changes of system outlet temperature, the degree of which agrees with the disturbance element. Meanwhile the bleed air pressure disturbance to the three-wheel refrigeration system influence is most intense. This paper provides reference for the design and optimization of the environmental control system. © 2022 IET Conference Proceedings. All rights reserved.

关键词： Environmental management

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The Simulation Analysis of a Control Strategy for the Multi-Cabin Helicopter Vapor Compression Cycle system with the Amesim

The Simulation Analysis of a Control Strategy for the Multi-...

引用

2022 CSAA/IET International Conference on Aircraft Utility systems, AUS 2022

作者： Deng, Weishi Aviation Key Laboratory of Science and Technology on Aero Electromechanical System Integration Nanjing211106 China

ISBN: (数字)9781839537769

ISBN: (纸本)9781839537769

In order to improve the dynamic temperature regulation performances of a vapor compression cycle in multi-cabin helicopter, a control strategy is proposed and theoretically evaluated by using Amesim software. A model for a vapor compression cycle system of a certain type helicopter is established to verify this strategy. Dynamic response performances of the system when the cabin heat load sharply increases or decreases are studied. Results found that the target temperature can be controlled within ± 1 °C, which shows the system has a good dynamic response by using the strategy. © 2022 IET Conference Proceedings. All rights reserved.

关键词： Dynamic response

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Electromagnetic Design of a Six-Phase Low-Inertia Fault-Tolerant Permanent Magnet Synchronous Machine 7

Electromagnetic Design of a Six-Phase Low-Inertia Fault-Tole...

引用

7th IEEE International Electrical and Energy Conference, CIEEC 2024

作者： Zhou, Ziyu Sui, Yi Qiu, Xiaoying Zheng, Ping Ma, Hui School of Electrical Engineering and Automation Harbin Institute of Technology Harbin China Avic Nanjing Engineering Institute of Aircraft Systems Aviation Key Laboratory of Science and Technology on Aero Electromechanical System Integration Nanjing China

ISBN: (纸本)9798350359558

Multiphase permanent magnet (PM) synchronous machine features the advantages of high reliability and high fault-tolerant capability, which has great potential in the fields like aviation servo and electric vehicles. In order to meet the design criteria of low moment of inertia and high post-fault torque performance, three different rotor structures are analyzed and compared for a low-inertia fault-tolerant permanent magnet synchronous machine(SLIFT-PMSM) by finite-element method. The influence of winding structure on torque performance is investigated, and the winding structure is optimized to improve the post-fault torque performance. The electromagnetic performance of the improved scheme is evaluated under both the normal and fault conditions. © 2024 IEEE.

关键词： Permanent magnets

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