首页|Distributed power conditioning unit of large-scale space solar power station

Distributed power conditioning unit of large-scale space solar power station

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In this paper,a multi-bus distributed Power Conditioning Unit(PCU)is proposed for the Space Solar Power Station with large scale photovoltaic(PV)array and power levels reaching MW level.In this unit,there are multiple independent PV arrays.In each PV array,there are mul-tiple independent PV subarrays.In this paper,a V-P droop control method with adaptive droop coefficient is proposed,which modifies the droop intercept based on the bus voltage deviation and the power per unit value of the PV array.This method ensures the accuracy of bus voltage and achieves proportional distribution of power between PV arrays based on the proposed topology structure in this paper.When the load changes or the output power of the PV array fluctuates,this method can ensure that power is distributed proportionally.The principle and control method of the proposed droop control method is analyzed in this paper.The effectiveness of the method is verified through MATLAB/Simulink simulation and experiment.Simulation and experimental results show that the proposed method can achieve power distributed proportionally when load changes and PV output power fluctuates,reduce bus voltage error caused by line impedance and differences in rated power of different PV arrays,and improve the performance of PV power gen-eration system applied to space.

Space Solar Power StationPhotovoltaicsDroop controlDC confluencePower conditioning unit

Xintong LI、Jianwei MI、Yiqun ZHANG、Guanheng FAN、Jie DU

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School of Mechano-electronic Engineering,Xidian University,Xi'an 710071,China

Shaanxi Key Laboratory of Space Solar Power Station System,Xidian University,Xi'an 710071,China

Academy of Advanced Interdisciplinary Research,Xidian University,Xi'an 710071,China

Civil Aerospace Technology Research Project,ChinaNational Natural Science Foundation of ChinaNational Natural Science Foundation of ChinaNational Key R&D Program of China

D01010352022075U19372022021YFB3900300

2024

10.1016/j.cja.2024.05.020

中国航空学报(英文版)
中国航空学会

中国航空学报(英文版)

CSTPCDEI
影响因子：0.847
ISSN：1000-9361
年,卷(期)：2024.37(8)
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