Coupling Effect of Electron Irradiation and Operating Voltage on the Deep Dielectric Charging Characteristics of Solar Array Drive Assembly

Wang, Xiaoping; Min, Daomin; Pan, Shaoming; Zheng, Shusai; Hou, Xinbin; Wang, Li; Li, Shengtao

doi:10.1109/tns.2021.3084151

Cited by 10 publications

(4 citation statements)

References 21 publications

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“…Ex is determined by a 1D Poisson equation solver with Neumann boundary condition on dielectric boundary and Dirichlet boundary condition on vacuum boundary, with E x,dielectric = σe/2ε 0 and Vx,vacuum = 0. ε 0 is vacuum permittivity and σe is surface charge density. Note that the effects of surface charge on spatial electric field distribution is complex which is closely linked with the subsurface charge trapping, migration and dissipation [10,11,[57][58][59][60], and the boundary condition here is merely a simplification in 1D condition considering only above-surface processes.…”

Section: Model Setupmentioning

confidence: 99%

An alternative simulation approach for surface flashover in a vacuum using a 1D2V continuum and kinetic model

Sun

Lian

Zhang

et al. 2023

J. Phys. D: Appl. Phys.

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Surface flashover across insulator in vacuum is a destructive plasma discharge which undermines the behaviors of a range of applications in electrical engineering, particle physics, space engineering, etc. This phenomenon is widely modeled by the particle-in-cell (PIC) simulation, here the continuum and kinetic simulation method is first proposed and implemented as an alternative solution for flashover modeling, aiming for the prevention of the unfavorable particle noises in PIC models. A 1D2V (one dimension in space, two dimensions in velocity) kinetic simulation model is constructed. Modeling setup, physical assumptions, and simulation algorithm are presented in detail, and a comparison with the well-known secondary electron emission avalanche (SEEA) analytical expression and existing PIC simulation is made. Obtained kinetic simulation results are consistent with the analytical prediction, and feature noise-free data of surface charge density as well as fluxes of primary and secondary electrons. Discrepancies between the two simulation models and analytical predictions are explained. The code is convenient for updating to include additional physical processes, and possible implementations of outgassing and plasma species for final breakdown stage are discussed. The proposed continuum and kinetic approach is expected to inspire future modeling studies for the flashover mechanism and mitigation.

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Section: Model Setupmentioning

confidence: 99%

An alternative simulation approach for surface flashover in a vacuum using a 1D2V continuum and kinetic model

Sun

Lian

Zhang

et al. 2023

J. Phys. D: Appl. Phys.

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“…When researching and developing high-voltage bus systems for satellites, assessing the risk of electrical breakdown for SADA slip rings is crucial [8]. In recent years, mechanism analysis and ground equivalent experiments have confirmed the risk of space arc faults in SADA slip rings [8][9][10]. The power system experiences faults such as reduced solar array power supply capacity, frequent changes in the SR operation modes, reduced bus voltage quality, and even ablation of the solar wings [11], depending on the working conditions and locations of the arc faults.…”

Section: Introductionmentioning

confidence: 99%

Fast Arc Detection Technology Based on Fractal Dimension for SADA Slip Ring in Satellite Power System

Meng,

Zhang,

Zhang

et al. 2024

Energies

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The solar array drive assembly (SADA) slip ring is a critical link that provides electrical power and electric signal transmission between solar arrays and satellite power systems, which is prone to arc faults in the space environment. If these arc faults cannot be detected and eliminated quickly enough, they will seriously threaten the safety of the satellite power system and the satellite. In this paper, a fast arc detection method based on fractal dimension is proposed that adapts to different operating modes of power systems. The detection method collects the current differential signal data flowing through the SADA slip ring, and, according to the trend of the fractal dimension change in this signal, the fault identification algorithm is designed for different operating modes of the power system to achieve real-time and rapid identification of arc faults. Finally, the effectiveness of the proposed method is demonstrated using test data under several different fault conditions.

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“…This fault then spread along the adjacent conductive ring, causing the power supply and distribution subsystem to be unable to output power. Among the electrical faults during the period 1980-2005, SADA suffered a greater number of failures [17]. In recent years, the research on the vacuum charging and discharging of SADA has been gradually emphasized, ground equivalent experiments and modeling analysis have been carried out on its failure mechanism [18,19], and its structure has been optimized to reduce the deep dielectric charging [20].…”

Section: Introductionmentioning

confidence: 99%

Modeling and Analysis of Non-Linear Phenomena of Satellite Power System in Space Environment and Hazard-Risk Evaluations

et al. 2022

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With the aim to solve the problem of the non-linear phenomenon of the satellite power system under the influence of the space environment factors, which threatens the stability of the power system, in this paper, the abnormal charging and discharging of solar arrays and solar array drive assembly (SADA) induced by the space plasma environment and accidental events, such as debris impact, and the non-linear behaviors of the solar array and load during the Earth eclipse are modeled and analyzed. On this basis, the hazard risk evaluations of the above non-linear phenomena are carried out, and the weak links of the satellite power system in the space environment are identified. The results show that the unexpected energy of the solar array will increase the current stress and power loss of the power device, resulting in S3R over-regulation. An SADA arc fault will reduce the power supply capacity of the solar array, damage the shunt regulator, and affect the quality of the bus. The non-linear behavior of the solar array and load during the Earth eclipse may damage the battery charge and discharge regulator, seriously affecting the stability of the power system.

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Coupling Effect of Electron Irradiation and Operating Voltage on the Deep Dielectric Charging Characteristics of Solar Array Drive Assembly

Cited by 10 publications

References 21 publications

An alternative simulation approach for surface flashover in a vacuum using a 1D2V continuum and kinetic model

An alternative simulation approach for surface flashover in a vacuum using a 1D2V continuum and kinetic model

Fast Arc Detection Technology Based on Fractal Dimension for SADA Slip Ring in Satellite Power System

Modeling and Analysis of Non-Linear Phenomena of Satellite Power System in Space Environment and Hazard-Risk Evaluations

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