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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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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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research on application scenario design technology for newly aerospace power supply components based on mission profiles 9

Research on application scenario design technology for newly...

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9th International Conference on Energy System, Electricity, and power, ESEP 2024

作者： Zhang, Yuhuan Wang, Sen Gao, Yifei Wang, Xiaoxiao Wang, Wenqiang Ma, Tao Liu, Mi Guo, Chuanwei Zhang, Guoshuai Zhang, Bolin Beijing Spacecrafts Beijing 100094 China Beijing Space Power Conversion and Control Engineering and Technology Research Center Beijing 100094 China Institute of Remote Sensing Satellite China Academy of Space Technology (CAST) Beijing 100094 China

ISBN: (纸本)9781510691728

Aerospace power supply systems are crucial to the functioning of spacecraft, providing the core energy required for their operations. The design of application scenarios for components in aerospace power supplies plays a vital role in ensuring the reliability and performance of these systems in complex space environments, which directly impacts the safe and stable operation of spacecraft. However, there is a lack of systematic methodologies for designing such application scenarios. This paper proposes a framework for aerospace power supply application scenario design, based on the mission profiles of components. The design process should ensure the completeness, effectiveness, and broad coverage of the application scenarios for newly developed devices, addressing various critical factors: dynamic mission requirements, inter-device performance interaction, mechanical and thermal characteristics, anti-hazardous design needs, safety-critical reliability, and performance under harsh environmental conditions. Comprehensive verification is essential to meet these multifaceted demands. This work aims to enhance the reliability and stability of aerospace power supply systems through rational application scenario design, improving system performance across all mission phases. The paper discusses the key characteristics and requirements of aerospace power supply systems in different mission stages, and presents techniques and methods for designing application scenarios for newly developed components to support the stable operation of these systems in challenging aerospace environments. © 2025 SPIE.

关键词： aerospace application scenario mission profile power supply

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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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Design of a Sampling System for Wide Range nano-current Signal 4

Design of a Sampling System for Wide Range nano-current Sign...

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2022 4th International Conference on Energy Systems and Electrical power, ICESEP 2022

作者： Zheng, Sha Shi, Junbiao Chen, Yonggang Gui, Peng Liu, Wenyang Guo, Shuai Zhang, Yuhuan Beijing Spacecraft China Technology Corporation And Control Engineering Aerospace Science and Beijing Space Power Conversion Research Center Beijing100094 China

space particle radiation will greatly shorten the service life of basic components, resulting in premature failure of aircraft. For newly developed electronic components for space applications, strict anti irradiation performance evaluation must be carried out to master their working characteristics and performance degradation mechanism in space irradiation environment, so as to provide a reliable guarantee for the safe operation of aerospace electronic equipment in orbit. Taking high-voltage power devices such as SiC MOSFET and IGBT as the research object, this paper designs a high-precision weak current signal acquisition and measurement system to continuously monitor its working current under specific track applications, so as to verify the mechanism of space radiation effect and the effectiveness of reinforcement technology. The experimental results show that the system has the advantages of wide range, low noise, high precision and good stability. It can be applied to the experimental verification of high-voltage power devices in various space environments, including space station orbit. © 2022 Institute of Physics Publishing. All rights reserved.

关键词： Irradiation

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research on power Supply control technology between Multiple spacecraft 2

Research on Power Supply Control Technology between Multiple...

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2nd International Conference on Electrical engineering and control Science, IC2ECS 2022

作者： Meng, Xiaomai He, Xiong Shi, Junbiao Li, Wang Ren, Liang Liu, Mi Beijing Spacecrafts Beijing100190 China Beijing Space Power Conversion and Control Engineering Research Center Beijing100190 China

ISBN: (纸本)9798350399165

With the development of Chinese space technology, spacecrafts combination system is constantly established. Solar panels of some spacecraft are blocked due to orbital attitude and space position, which leads to insufficient power generation capacity and difficulty in meeting load requirements. Therefore, the power supply system between multiple spacecraft is established to improve the power utilization rate of each spacecraft and ensure the stable operation of the system. In this paper, an energy supply technology suitable for multiple spacecraft is proposed, which mainly includes high-power isolation and transformation, efficient grid-connected power supply, bidirectional energy control, on-orbit voltage and current regulation. © 2022 IEEE.

关键词： spacecraft

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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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Effects of external parameters on plasma characteristics and uniformity in a dual cylindrical inductively coupled plasma

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Plasma Science and technology 2024年第12期26卷 63-74页

作者： Pengyu WANG Siyu XING Daoman HAN Yuru ZHANG Yong LI Cheng ZHOU Fei GAO Younian WANG Key Laboratory of Materials Modification by Laser Ionand Electron Beams(Ministry of Education)School of PhysicsDalian University of TechnologyDalian 116024People’s Republic of China Lab of Advanced Space Propulsion and Beijing Engineering Research Center of Efficient and Green Aerospace Propulsion Technology Beijing Institute of Control EngineeringBeijing 100190People’s Republic of China

The dual cylindrical inductively coupled plasma source,compared to the conventional structure of inductively coupled plasma source,can significantly improve the uniformity of *** has an enhanced potential for application in processes,such as etching and ashing.A uniform plasma can be obtained by allowing the remote plasma from the upper chamber modulate the main plasma generated in the lower *** this study,a fluid model was employed to investigate a dual cylindrical inductively coupled Ar/O_(2)*** effects of external parameters on electron density,electron temperature,O atomic density,and plasma uniformity in the main chamber were studied,and the reasons were *** results of this study show that remote power can control the plasma uniformity and increase the plasma density in the main *** the remote power increased,plasma uniformity improved initially and then *** main power affected the plasma density at the edge of the main chamber and can modulate the plasma density in the main *** gas pressure affected both the uniformity and density of the *** the gas pressure increased,the plasma uniformity deteriorated,but the free radical density improved.

关键词： dual inductively coupled plasma remote plasma plasma uniformity fluid model

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

Optimization Study for the Influence of Parasitic Parameters...

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power Electronics and Application Symposium (PEAS), IEEE International

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

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.

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Fluid simulation of the effect of a dielectric window with high temperature on plasma parameters in inductively coupled plasma

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Plasma Science and technology 2023年第3期25卷 51-61页

作者：李娜韩道满张权治刘旭辉王英杰王友年 Key Laboratory of Materials Modification by Laser Ionand Electron Beams(Ministry of Education)School of PhysicsDalian University of TechnologyDalian 116024People’s Republic of China Lab of Advanced Space Propulsion and Beijing Engineering Research Center of Efficient and Green Aerospace Propulsion Technology Beijing Institute of Control EngineeringBeijing 100190People’s Republic of China

To maintain the high-density plasma source in inductively coupled plasma(ICP),very high radiofrequency power is often delivered to the antenna,which can heat the dielectric windows near the antenna to high *** high temperature can modulate the plasma characteristics to a large *** thus study the effect of dielectric window temperature on plasma parameters in two different ICP structures based on COMSOL *** distributions of various plasma species are examined at different dielectric window *** concentration of neutral gas is found to be largely modulated at high dielectric window temperature,which further affects the electron collision probability with neutrals and the electron ***,the electron density profiles are barely affected by the dielectric window temperature,which is mainly concentrated at the center of the reactor due to the fixed power input and pressure.

关键词： fluid simulation metastable argon dielectric window temperature inductively coupled plasma

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