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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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research on aerospace application of half-bridge resonant converter 9

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

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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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research on Three-Port Converter for New Aerospace Energy Architecture 4

Research on Three-Port Converter for New Aerospace Energy Ar...

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2022 4th International Conference on Energy, power and Grid, ICEPG 2022

作者： Wang, Li Shi, Junbiao Wu, Jianchao Li, Huiyao Liu, Mi Zhao, Shuyu Beijing Spacecrafts Ltd Beijing100094 China Beijing Space Power Conversion and Control Engineering Research Center Beijing100080 China

The traditional design method of spacecraft power systems based on customization and the combination of two-port converters can no longer meet the increasing application demands of having high power and being modular and versatile. Three-port DC converter, standardized to form a redundant parallel power supply system with a distributed model, is a possible solution to meet the design requirements of the above spacecraft power supply system. In this paper, a three-port converter is designed to complete the MPPT control of the PV array at the input end to maximize the power generated by the PV array, complete the battery charge and discharge control, realize the bidirectional conversion and transmission of the battery charge and discharge power, and complete the control of the load voltage at the output end to ensure the stable and reliable power supply of the load. If the integrated DC converter is used to realize the power transmission and conversion between the three ports at the same time, the volume and weight of the system can be greatly reduced, and then the power density of the system can be improved. © Published under licence by IOP Publishing Ltd.

关键词： Electric power transmission

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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...

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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...

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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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Enhanced AC Fault Ride-through control for MMC-integrated System Based on Active PCC Voltage Drop

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Journal of Modern power Systems and Clean Energy 2023年第4期11卷 1316-1330页

作者： Haihan Ye Wu Chen Heng Wu Wu Cao Guoqing He Guanghui Li Center for Advanced Power Conversion Technology and Equipment School of Electrical EngineeringSoutheast UniversityNanjing 210096China Department of Energy Technology Aalborg University9220 AalborgDenmark China Electric Power Research Institute Beijing 100192China

When a renewable energy station(RES)connects to the rectifier station(RS)of a modular multilevel converterbased high-voltage direct current(MMC-HVDC)system,the voltage at the point of common coupling(PCC)is determined by RS control *** example,RS control may become saturated under fault,and causes the RS to change from an equivalent voltage source to an equivalent current source,making fault analysis more *** addition,the grid code of the fault ride-through(FRT)requires the RES to output current according to its terminal *** changes the fault point voltage and leads to RES voltage regulation and current redistribution,resulting in fault response *** address these issues,this study describes how an MMC-integrated system has five operation modes and three common characteristics under the duration of the *** study also reveals several instances of RS performance degradation such as AC voltage loop saturation,and shows that RS power reversal can be significantly *** enhanced AC FRT control method is proposed to achieve controllable PCC voltage and continuous power transmission by actively reducing the PCC voltage *** robustness of the method is theoretically proven under parameter variation and operation mode ***,the feasibility of the proposed method is verified through MATLAB/Simulink results.

关键词： Modular multilevel converter-based high-voltage direct current(MMC-HVDC)system fault ride-through(FRT) voltage loop saturation continuous power transmission point of common coupling(PCC) active voltage drop control

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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...

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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 high-efficiency battery charge regulator based on superbuck topology 2

Research on high-efficiency battery charge regulator based o...

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2nd International Conference on Smart power and Internet Energy Systems, SPIES 2020

作者： Zhang, Guo-Shuai Wu, Jian-Chao Zhao, Wen-Jie Zhi, Shu-Bo Zheng, Yan Wan, Cheng-An Beijing Space Power Conversion and Control Engineering Research Center Beijing Spacecraft China Aerospace Science and Technology Corporation Beijing100190 China China Aerospace Science and Technology Corporation National Space Science Center Chinese Academy of Sciences Beijing Spacecraft Beijing100190 China

ISBN: (数字)9781728166117

ISBN: (纸本)9781728166117

From the perspective of the space power conditioning unit(PCU) system, this paper studies the battery charging controller based on the Superbuck topology and the characteristics of lithium-ion batteries. We analysis the operating mode of the converter, establish the model of the converter, then we analysis the battery charge control circuit, finally we carry out the simulation and experimental result. © 2020 IEEE.

关键词： Topology

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Design of a High Reliable power Supply for space-borne Active Phased Array Antenna 2

Design of a High Reliable Power Supply for Space-borne Activ...

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2nd International Conference on Laser, Optics and Optoelectronic technology, LOPET 2022

作者： Xie, Pengfei Liu, Mi Huang, Zhiqi Ji, Mingming Wang, Li Ma, Tao Beijing Spacecraft Co. Ltd. 63 Zhichun Road Beijing100190 China Beijing Space Power Conversion and Control Engineering Research Center Beijing100080 China

ISBN: (纸本)9781510657588

With the continuous improvement of the performance of the spaceborne active phased array antenna, the power supply required by the phased array antenna is developing towards low voltage and high current. The efficiency of the power supply is more stringent. This paper presents a design of a high-reliable power supply for space-borne active phased array antenna. This article introduces the composition of the phased array antenna power supply, and proposes a novel high-reliability single transistor forward interleaved parallel topology. The synchronous rectification control technology is adopted to realize the zero-voltage switch (ZVS) of the DC/DC converter, which effectively reduces the loss of the rectifier device and improves the efficiency. Secondly, the maximum current autonomous current sharing technology is used to realize parallel connection of multiple DC/DC converters. Finally, through the results of working waveforms and experimental verification of the engineering prototype, all the requirements are achieved. © 2022 SPIE.

关键词： DC-DC converters

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Identification Modeling of Frequency-Coupling Admittance for Grid-Connected Inverter Under All Operating Conditions 6

Identification Modeling of Frequency-Coupling Admittance for...

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6th IEEE International Electrical and Energy Conference, CIEEC 2023

作者： Zhang, Zilin Wu, Wenhua Xie, Zhiwei Chen, Yandong Cao, Shixiang Luo, Cong National Electric Power Conversion and Control Engineering Technology Research Center Hunan University Changsha China

ISBN: (纸本)9798350346671

The control structure and parameters of the grid-connected inverter in actual projects are usually unknown, which results in the 'black-box' phenomenon. The traditional impedance modeling method is not suitable for the black-box. In this paper, a black-box identification method for the admittance of grid-connected inverters under all operating conditions considering frequency-coupling is proposed. Firstly, accurate discrete admittance data are acquired by the frequency-coupling admittance measurement. Then, the vector fitting (VF) is applied to identify the frequency-coupling admittance under a single operating condition. The black-box models identified by VF are combined with the weighting function to obtain the black-box admittance model of the grid-connected inverter under all operating conditions. Finally, the effectiveness and accuracy of the method are verified via MATLAB/Simulink. The results show that the method introduced in this paper not only can obtain the black-box admittance model under all operating conditions simply through several groups of admittance data, but also has the advantages of efficiency and high accuracy. © 2023 IEEE.

关键词： Electric inverters

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