运载火箭液氢循环预冷无传感器控制系统设计  

Design of a Sensorless Liquid Hydrogen Circulation Precooling Control System for Rockets

作　　者：张学英 穆晖 卢頔 卢伟 黄辉 李东[2] ZHANG Xueying;MU Hui;LU Di;LU Wei;HUANG Hui;LI Dong(Beijing Institute of Astronautical System Engineering,Beijing 100076,China;China Academy of Launch Vehicle Technology,Beijing 100076,China)

机构地区：[1]北京宇航系统工程研究所,北京100076 [2]中国运载火箭技术研究院,北京100076

出　　处：《深空探测学报（中英文）》2022年第1期88-98,共11页Journal Of Deep Space Exploration

基　　金：长征五号专项工程资助项目。

摘　　要：“长征五号”运载火箭的大推力氢氧发动机的氢系统采用循环泵驱动的循环预冷方案。永磁同步电机是循环泵的动力元件,采用无传感器矢量控制技术进行控制。介绍了液氢循环预冷控制系统设计方案,阐述了坐标变换和数学建模、空间矢量脉宽调制技术、无传感器控制技术的设计原理,对两种系统传输线缆设计进行了分析和对比。对振荡周期、液氮环境循环泵抖振、液氢环境电机失速等研究内容进行了仿真试验验证和系统级试验验证。仿真结果表明:采用无传感器矢量控制技术的循环预冷控制系统具有安装简单、转速调节灵活和负载波动适应能力强等优点。Circulation precooling driven by pump is used by Large-Thrust Hydrogen/Oxygen rocket engine of CZ-5 Launch Vehicle.The Circulation precooling pump of liquid hydrogen is driven by a permanent magnet synchronous motor.The circulation precooling control system control the motor of circulation precooling pump by sensorless vector control technology.This paper introduces the scheme of circulation precooling control system,expounds the key technology design,such as coordinate transformation and mathematical modeling,space vector pulse width modulation technology,sensorless control technology and so on,The two cable design methods are compared and analyzed in this paper.The research contents of period of oscillation,pump resonance in liquid nitrogen and motor stall in liquid hydrogen are simulated to verify the system design in liquid nitrogen and liquid hydrogen environment.The results show that the circulation precooling control system with sensorless vector control technology has the advantages of simple installation,flexible speed regulation and strong adaptability to load change.

关 键 词：运载火箭 液氢 循环预冷 无传感器控制系统 

分 类 号：V442[航空宇航科学与技术—飞行器设计] V556