基于SLADRC的三相交错并联DC-DC变换器稳压控制  

Stable Voltage Control of Three⁃phase Interleaved Parallel DC-DC Converter Based on SLADRC

作　　者：赵发平 佘彦杰 孙环宇 卜祥洲 白涛 ZHAO Faping;SHE Yanjie;SUN Huanyu;BU Xiangzhou;BAI Tao(State Grid Luoyang Power Supply Company,Luoyang 471000,Henan,China;Henan Hongbo Measurement and Control Technology Co.,Ltd.,Zhengzhou 450000,Henan,China;State Grid Hebei Electric Power Co.,Ltd.,Shijiazhuang 050021,Hebei,China)

机构地区：[1]国网洛阳供电公司,河南洛阳471000 [2]河南宏博测控技术有限公司,河南郑州450000 [3]国网河北省电力有限公司,河北石家庄050021

出　　处：《电气传动》2024年第11期41-48,65,共9页Electric Drive

基　　金：国网河南省电力公司重点科技项目(5217A0230002)。

摘　　要：针对三相交错并联型DC-DC变换器在输出侧负载和输入侧母线电压数值改变以及其他扰动影响下而出现的输出电压波动现象,提出一种滑模线性自抗扰控制策略。首先,建立三相交错并联DC-DC变换器在s域下的数学模型,并分析能量传输不平衡原理;然后,根据系统模型,设计合适的观测器和线性自抗扰控制器;进一步,为提高系统对输出电压波动的抑制能力,引入滑模控制,形成滑模线性自抗扰控制,提高系统的抗扰性和快速性;最后,设计多种工况对新型控制策略进行仿真验证和半实物仿真实验验证。结果表明:与传统控制策略相比,滑模线性自抗扰控制不仅具备优异的电压波动抑制能力,而且具有优越的稳态运行能力和暂态穿越能力,保证了系统能量传输间的平衡。A sliding mode linear self disturbance rejection control strategy was proposed to address the output voltage fluctuations caused by sudden load changes,changes in DC bus voltage,disturbance addition,and other disturbances in three-phase interleaved parallel DC-DC converters.Firstly,a mathematical model of three-phase interleaved parallel DC-DC converter in the s domain was established and the principle of energy transmission imbalance was analyzed.Then,based on the system order,appropriate observers and linear auto-disturbance rejection controllers were designed.Furthermore,in order to improve the ability to suppress the fluctuation of the output voltage of the system,sliding mode control was introduced to form a sliding mode linear auto disturbance rejection control,which improves the anti-interference and rapidity of the system.Finally,multiple operating conditions were designed to simulate and verify the new control strategy.The results show that compared with traditional control strategies,sliding mode linear active disturbance rejection control not only has excellent voltage fluctuation suppression ability,but also has superior steady-state operation ability and transient traversal ability,ensuring the balance between system capability transmission.

关 键 词：DC-DC变换器 线性自抗扰控制 观测器 滑模控制 

分 类 号：TM464[电气工程—电器]