摘要
为降低CRH2型动车组的后期维护成本以及国外采购风险,提升辅助电源装置(APU)的整体性能,文章研制了一套拥有自主知识产权的动车组高性能APU控制单元,以实现与原型控制单元的无缝替代。其通过改进控制单元硬件电路并增加以太网电路,大幅提升了控制单元的计算能力、输出精度、负载突投/切响应速度、通信速率等性能以及实时故障诊断能力;在此基础上,通过引入高精度谐波补偿控制技术,提升了非线性负载时变流器的谐波抑制能力,改善了APU的输出电压品质。对所设计的APU进行型式试验、组合试验和可靠性试验,并与采用原型控制单元的APU进行了对比试验,结果显示,其性能优于原型机的,其中非线性满载负荷工况下APU输出电压谐波含量由原型机的3.9%下降到了1.6%,达到与原型控制单元无缝替代要求。
In order to reduce the late maintenance cost of CRH2 EMU,avoid risks in foreign procurement,and improve the overall performance of auxiliary power unit(APU),this paper presents a high-performance APU control unit with independent intellectual property rights,in order to achieve seamless replacement with the original control unit.By improving the hardware circuit of the control unit and adding Ethernet circuit,the computing power and output precision,load jump/switch response speed,communication rate and real-time fault diagnosis capability of the control unit are greatly improved.Based on that,by introducing high precision harmonic compensation control technology,the harmonic suppression ability of the converter under nonlinear load and the output voltage quality of the APU are improved.Type test,combination test and reliability test of the designed APU are carried out,and the comparison test between the APUs with the designed control unit and the original one is also completed.The results show that the performance of the designed APU is better than that of the deployed one.The harmonic content of output voltage of the APU decreases from 3.9%to 1.6%under the nonlinear full load condition,which achieving the requiremant of seamless replacement with the original one.
作者
羊利芬
李炳璋
李小文
曾明高
袁芳
YANG Lifen;LI Bingzhang;LI Xiaowen;ZENG Minggao;YUAN Fang(Zhuzhou CRRC Times Electric Co.,Ltd.,Zhuzhou,Hunan 412001,China)
出处
《控制与信息技术》
2023年第2期71-77,共7页
CONTROL AND INFORMATION TECHNOLOGY
关键词
逆变控制
非线性负载
谐波抑制
故障诊断
动车组
辅助电源
inverter control
nonlinear load
harmonic suppression
fault diagnosis
EMU
auxiliary power unit
作者简介
羊利芬(1976-),女,高级工程师,主要从事辅助变流器控制系统设计工作。
