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检索条件"机构=Beijing Space Power Conversion and Control Engineering and Technology Research Center"

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research on Low-Temperature Pull and Deflection Characteristics of Aerospace power Supply 11th

Research on Low-Temperature Pull and Deflection Characterist...

引用

11th Frontier Academic Forum of Electrical engineering, FAFEE 2024

作者： Zhang, Yuhuan Liu, Mi Guo, Chuanwei Ma, Tao zhao, Chuang Li, Xinxin Chen, Yonggang Li, Yan Beijing Spacecrafts Beijing100094 China Beijing Space Power Conversion and Control Engineering and Technology Research Center Beijing100094 China

ISBN: (纸本)9789819788316

Deep space exploration is an important field of space exploration and astronautical activities in today's world, which is of great significance to the development of human civilization. Aerospace power supply system is an important part of the power supply system for deep space exploration, so research on its low-temperature pull and deflection characteristics is particularly important. In this paper, the low-temperature pull-off characteristics of the Aerospace power Supply are verified and enhanced. Firstly, the application circuit of VDMOS, which is the core component of aerospace power supply, is analyzed, and two different working modes, namely, single switching application and high frequency switching application, are summarized. Secondly, the low-temperature pull-off test of aerospace power supply is carried out to compare and analyze with the normal temperature pull-off test to identify the reasons for poor low-temperature pull-off characteristics.. Finally, the low-temperature pull-off control link is analyzed, and the solution is given and verified through the test, which improves the low-temperature pull-off characteristics of the astronautical power supply, and contributes to the development of high reliability of the power supply system for deep space exploration. © beijing Paike Culture Commu. Co., Ltd. 2025.

关键词： space research

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Optimization Study for the Influence of Parasitic Parameters in Aerospace power Supply Based on GaN 2

Optimization Study for the Influence of Parasitic Parameters...

引用

2nd IEEE International power Electronics and Application Symposium, PEAS 2023

作者： Peng, Cheng Chen, Yonggang Zhi, Shubo Ji, Mingming Li, Huiyao Ji, Zhipo China Academy of Space Technology Beijing Space Power Conversion and Control Engineering Research Center Beijing Spacecrafts Beijing China

ISBN: (纸本)9798350313765

Gallium Nitride (GaN) power devices are conducive to the development of high-frequency and high-efficiency of aerospace power supply. However, the inevitable parasitic parameters in the circuit are easy to cause oscillation and lead to the deterioration of circuit reliability. An active clamp forward DC/DC converter with parasitic parameters is proposed, using GaN power device as the main switch to improve the switching frequency and efficiency of the power supply. The main operating modes of the circuit are deduced theoretically, and the topology of the circuit containing three kinds of parasitic inductors is analyzed dynamically by simulation. Finally, according to the simulation results, the optimization measures for the parasitic parameters causing different oscillation problems are proposed. An experimental prototype is designed and experimentally tested, proved the effectiveness of the suppression methods. Promote the high-reliability application of GaN power devices in aerospace power supply. © 2023 IEEE.

关键词： active clamp forward converter aerospace power supply GaN parasitic parameters

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research on aerospace application of half-bridge resonant converter 9

Research on aerospace application of half-bridge resonant co...

引用

9th International Symposium on Advances in Electrical, Electronics, and Computer engineering, ISAEECE 2024

作者： Liu, Mi Gui, Peng Guo, Chuanwei Zhao, Chuang Shi, Junbiao Beijing Spacecrafts Ltd Beijing100094 China Beijing Space Power Conversion and Control Engineering Research Center Beijing100080 China

ISBN: (纸本)9781510683303

Aiming at the continuous improvement of aerospace DC/DC conversion efficiency requirements and the relatively poor electrical characteristics of available aerospace power semiconductor devices, the research on half-bridge resonant soft switch topology for efficient conversion was carried out. The working process of the half-bridge resonant converter under PFM and PWM control modes is analyzed. A half-closed loop hybrid control method suitable for output voltage interval control and synchronous rectification control method based on multiple side current sampling is proposed. For different output voltage control sections, different control schemes and synchronous rectification schemes are adopted to achieve the balance between converter efficiency improvement and power supply security. © 2024 SPIE.

关键词： Aerospace engineering Circuit switching Switching Inductance power supplies Switches Lawrencium Bridges Transformers Transistors

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Design of a high-precision current source system for tunable laser driving 5

Design of a high-precision current source system for tunable...

引用

2023 5th International Conference on Energy, power and Grid, ICEPG 2023

作者： Gui, Peng Zhao, Chuang Zhao, Lei Liu, Wenyang Chen, Zitian Mu, Cheng Zhang, Yuhuan Beijing Spacecraft China Technology Corporation Beijing100094 China Control Engineering Aerospace Science and Beijing Space Power Conversion Research Center Beijing100094 China

Fiber Bragg Grating (FBG), which is an Optical Fiber Sensor with high sensitivity, light weight, and strong anti-interference ability, can realize the measurement of physical quantities, such as temperature and strain. The sensor network formed by FBG sensors is through wavelength division multiplexing, which greatly reduced the difficulty of sensor wiring. Therefore, FBG sensors are widely used in sensing fields such as aerospace, bridges and tunnels. As a wavelength-modulated Optical Fiber Sensor, FBG's sensing accuracy depends not only on the performance of the laser, but also on the stability of the driving current. In this paper, a high-precision current source system for laser S7500 modulation drive is designed, with a resolution of output current is higher than 2uA. and the laser S7500 is continuously linearly scanned at 20pm intervals in the wavelength range of 1527nm to 1567nm. The wavelength accuracy of the output optical signal is better than 2pm. The test results prove that the system has the advantages of high modulation speed, good stability and high reliability, and can be applied to high-precision FBG sensor networks. © 2024 Institute of Physics Publishing. All rights reserved.

关键词： Sensor networks

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Motor control technology based on fractional active disturbance rejection 5

Motor control technology based on fractional active disturba...

引用

2023 5th International Conference on Energy, power and Grid, ICEPG 2023

作者： Liu, Wenyang Zhang, Yuhuan Shi, Junbiao Zhang, Bo Li, Huiyao Zheng, Sha Beijing Spacecraft Co. Ltd. Beijing100094 China Beijing Space Power Conversion and Control Engineering Research Center Beijing100094 China

For non-linear, strongly coupled, multivariable and naturally unstable motor control systems to realize the rapid return of the motor to the original equilibrium point without overshoot, the traditional PID controller algorithm is prone to defects such as large overshoot and long response time. The study proposes fractional order active disturbance rejection control for the motor self-balancing control method. A novel controller composed of a fractional order controller and an active disturbance rejection controller is designed and its control characteristics are analyzed and simulated. The experimental results show that compared with the traditional PID control, the controller has better dynamic performance, steady-state performance and anti-interference ability so that the motor can reach the equilibrium position quickly, stably and accurately. The illustrations of the experimental verification have been modified and explained. © 2024 Institute of Physics Publishing. All rights reserved.

关键词： controllers

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Design of High Voltage and High power Supply for Aerospace Based on LLC Resonant Converter 8

Design of High Voltage and High Power Supply for Aerospace B...

引用

8th International Conference on Energy System, Electricity, and power, ESEP 2023

作者： Wu, Yu-Heng Zheng, Yan Wan, Cheng'an Zhi, Shubo Guo, Xiaofeng Yang, Dongping Beijing Spacecrafts Manufacturing Co. Ltd. Beijing100080 China Beijing Space Power Conversion and Control Engineering Research Center Beijing100190 China

ISBN: (数字)9781510679801

ISBN: (纸本)9781510679795

With the development of space technology, space load equipment, including high-power electric thrusters, have more and more stringent requirements on DC power supply, such as voltage, power, efficiency and reliability. However, the particularity of space environment and the performance of existing astronaut-grade devices limit the direct realization of high-voltage busbar output. The 100V bus voltage of domestic spacecraft can not meet the demand of high-power load. Based on the 100V bus supply voltage of the spacecraft, this paper adopts a half-bridge LLC resonant converter to realize the simulation design of 600V output voltage and 1kW output power. Through the FHA modeling and modal analysis of the LLC resonant converter, the circuit parameter design is completed, and the influence of the circuit parasitic parameters is analyzed theoretically and through simulation. The correctness of the design is verified by Simulink simulation. Considering the reliability, the spatial high-power system adopts multi-module parallel topology, which is conducive to improving the power and power density of single module, and the sub-side capacitor array structure is convenient for multi-module parallel, which provides a feasible scheme for the miniaturization of space power supply. © 2024 SPIE.

关键词： Modal analysis

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research on Active Disturbance Rejection control technology of Two-wheel Self-balancing Robot 5

Research on Active Disturbance Rejection Control Technology ...

引用

5th International Conference on Electrical engineering and control Technologies, CEECT 2023

作者： Liu, Wenyang Zhang, Bo Guo, Shuai Shi, Junbiao Ji, Mingming Zheng, Sha Control Engineering Aerospace Science and Beijing Space Power Conversion Research Center Dept.Beijing Spacecraft China Technology Corporation Beijing China

ISBN: (纸本)9798350342253

The two-wheel self-balancing robot has the advantages of small size and flexible operation, but it is an inverted pendulum system with electromechanical integration, which has the characteristics of nonlinearity, strong coupling, and many random disturbances. The overshoot returns to the equilibrium point. In this paper, an active disturbance rejection control method combining a PD controller and linear extended state observer is studied, and the simulation analysis and verification experiment of this control system are carried out. The experimental results show that the control system can estimate the external disturbance, so that the self-balancing robot can quickly track to the equilibrium position without overshooting, and has strong robustness and anti-interference ability. © 2023 IEEE.

关键词： Wheels

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research on Magnetic Integration technology of Half-Bridge Converter for Aerospace Application 5

Research on Magnetic Integration Technology of Half-Bridge C...

引用

5th International Conference on Electrical engineering and control Technologies, CEECT 2023

作者： Zhi, Shubo Tang, Qi Wang, Jianping Pei, Xingzheng Zhang, Xiaofeng Ji, Mingming Beijing Spacecrafts Manufacturing Factory Beijing Space Power Conversion and Control Engineering Technology Research Center Beijing China Beijing Institute of Spacecraft System Engineering Beijing China

ISBN: (纸本)9798350342253

This paper presents magnetic integration provides an accurate method for the fully utilizing the magnetizing curves of several magnetic components by integrating into one magnetic core in order to achieve a lighter and smaller converter. This paper aims to put forward a method which can apply the magnetic integration into the DC-DC converter with half-bridge topology in the aerospace. This paper has fully utilized the magnetic integration into the analysis of converters in the working stages and the following established magnetic circuit model. An engineering prototype based on aerospace-grade components is developed. Then, the problems existed in the practical application of magnetic integration into the DC-DC converter in the aerospace are discussed and the related solutions are put forward. As a result, the experimental results of the engineering prototype proves the feasibility of the solutions raised in this paper. © 2023 IEEE.

关键词： DC-DC converters

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Construction of Grid-Based Virtual Synchronous Mechanism and Voltage Feedforward control Method Under Weak Grid 11th

Construction of Grid-Based Virtual Synchronous Mechanism and...

引用

11th Frontier Academic Forum of Electrical engineering, FAFEE 2024

作者： Xu, Jiacheng Chen, Yandong Xie, Zhiwei Li, Xuyang Zhao, Chen National Electric Power Conversion and Control Engineering Technology Research Center Hunan University Changsha410082 China

ISBN: (纸本)9789819788194

In order to solve the problem that the traditional Grid-Following (GFL) grid-connected inverter is prone to oscillation and instability under weak grid, a grid-following virtual synchronous mechanism construction and voltage feedforward control method based on the swing equation of the synchronizer are proposed. Firstly, the method refers to the Virtual Synchronous Generators (VSG) technology to derive and reconstruct the swing equation of the synchronous machine, and proposes a new voltage feedforward controller, which introduces inertia and damping to the control of the GFL inverter and improves the stability of the GFL inverter under the weak power grid. Then, the proposed control method is theoretically analyzed and optimized by establishing the frequency-coupling sequence admittance model, and the results show that the proposed method can significantly improve the negative resistance characteristics of the inverter in the middle and low frequency bands to enhance the stability of the GFL grid-connected inverter under the weak grid. Finally, this paper verifies that the proposed control method can operate stably in weak and very weak grids, as well as in strong power grids, which is of great significance for improving the adaptability and reliability of GFL grid-connected inverters in complex grid conditions. © beijing Paike Culture Commu. Co., Ltd. 2025.

关键词： Feedforward control

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Anti-Offset Wireless power Transfer System Based on Variable Inductor 11th

Anti-Offset Wireless Power Transfer System Based on Variable...

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11th Frontier Academic Forum of Electrical engineering, FAFEE 2024

作者： Qu, Sizhuo Chen, Yandong Luo, Cong Xie, Jiawei Wu, Longbang National Electric Power Conversion and Control Engineering Technology Research Center Hunan University Changsha410082 China

ISBN: (纸本)9789819788194

In recent years, wireless power transfer has been widely studied for its advantages of safety, convenience and intelligence. However, in the actual working scene, the horizontal or vertical offset of the receiving coil may cause a large fluctuation in the output voltage of the system, which seriously affects the life of the load, and the surge of the primary side current leads to the heating of the switch and even the overcurrent of the device. Therefore, this paper proposes an anti-offset control strategy based on adjusting the variable inductor to compensate for the surge of the primary side current and the fluctuation of the output voltage caused by the coil offset. In this paper, a detuned series-series anti-offset wireless power transfer system with variable inductor added to the secondary side is designed. The variable inductor is adjusted by changing the permeability of the variable inductor. Based on the adjustment of the variable inductor, the output voltage is constant when the coil is offset and the primary side current is reduced. The control strategy does not require wireless communication. Finally, a 600 W wireless power transfer system with stable output voltage of 72 V is built. The experimental results show that the tolerance range of the system in the horizontal direction is 0–12 cm, and the tolerance range in the vertical direction is 5–11 cm, and the current of the transmitting coil is reduced when the coil is offset. The system improves the freedom and stability of the wireless power transfer system. © beijing Paike Culture Commu. Co., Ltd. 2025.

关键词： Inductive power transmission

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