航天器工程2019，Vol.28Issue(6)：37-45,9.DOI:10.3969/.j issn.1 673-8748.2019.06.006
一种SAR卫星电源变换器快速响应控制策略
A Fast Response Control Strategy for Power Converter of SAR Satellite
李海津 1张晓峰 1李佳宁 1谷雨2
作者信息
- 1. 北京空间飞行器总体设计部,北京 100094
- 2. 哈尔滨工业大学(深圳),广东深圳 518055
- 折叠
摘要
Abstract
The power supply of SAR(synthetic aperture radar)satellite operates in pulse mode, and the transient of load is fast and the output current is high.In order to meet the requirement of voltage dynamic response and guarantee the output voltage in the index range,a fast response control strategy for Buck converters is proposed in the paper.The proposed strategy combines the advantages of linear control and non-linear control.In the transit state,non-linear controller regu-lates the bus voltage based on the voltage detection.When the output voltage recovers into the re-quired range,the linear controller takes the control of bus voltage.The proposed strategy does not increase the output capacitance,and can increase the dynamic response of the converter.The proposed strategy and conventional PI control strategy are compared through simulations and ex-periments.The result shows that the proposed strategy reduces the voltage transit drop and in-creases the dynamic response speed,and improves the dynamic characteristic of the power con-verter of SAR satellite.关键词
合成孔径雷达卫星/Buck变换器/变换器控制/非线性控制/电压动态响应Key words
SAR satellite/Buck converter/converter control/non-linear control/voltage dynamic response分类
航空航天引用本文复制引用
李海津,张晓峰,李佳宁,谷雨..一种SAR卫星电源变换器快速响应控制策略[J].航天器工程,2019,28(6):37-45,9.
