基于LADRC的电动汽车中间变流器鲁棒优化控制  

Robust optimization control of intermediate converter for electric vehicles based on LADRC

作　　者：黄军强 吕志鹏 HUANG Junqiang;LV Zhipeng(School of Electronics and Information Engineering,Shanghai Electric Power University,Shanghai 200090,China;State Grid Shanghai Energy Internet Research Institute Co.,Ltd.,Shanghai 201210,China)

机构地区：[1]上海电力大学电子与信息工程学院,上海200090 [2]国网上海能源互联网研究院有限公司,上海201210

出　　处：《电子设计工程》2024年第20期158-162,167,共6页Electronic Design Engineering

基　　金：国家重点研发计划(2021YFB2401200);国家电网有限公司科技项目(5400-202155459A-0-0-00)。

摘　　要：在新能源发电技术的推动下,机动车领域发生了根本性变化,燃油汽车已逐步被电动汽车所取代,电动汽车得到了迅猛发展。然而,电动汽车中的中间变流器在实际工作中将受到外部扰动和内部未建模动态特性的影响,导致中间变换器的控制性能下降,甚至影响电动汽车的正常运行。针对扰动导致的电动汽车中间变流器控制性能下降的问题,设计了一种基于扰动分解原理和模糊鲁棒算法相结合的改进鲁棒自抗扰控制。对自抗扰中的总扰动进行拆解,分解为电动汽车外部扰动和内部未建模扰动,并设计两个观测器对两类扰动进行观测,将观测之后的估计量与扰动反馈量进行抵消,从而提高了对电动汽车外扰和内扰的观测能力,提高了电动汽车的抗扰性。在自抗扰控制器部分引入鲁棒模糊算法,对控制器带宽参数进行实时整定,从而使系统在任何情况下都可保证控制带宽最优。设计不同的工况,对鲁棒自抗扰控制策略、传统自抗扰、鲁棒模糊进行实验对比,验证了所提控制策略的正确性和优异性,结果表明,所提控制策略鲁棒自抗扰的电压误差小于3%,电压振荡抑制可达95%以上。Under the promotion of new energy generation technology,fundamental changes have taken place in the field of motor vehicles.Fuel powered vehicles have gradually been replaced by electric vehicles,and electric vehicles have experienced rapid development.However,the intermediate converter in electric vehicles will be affected by external disturbances and unmodeled internal dynamic characteristics in practical work,leading to a decrease in the control performance of the intermediate converter and even affecting the normal operation of electric vehicles.Aiming at the problem of reduced control performance of intermediate converters in electric vehicles caused by disturbances,an improved robust self disturbance rejection control based on the principle of disturbance decomposition and fuzzy robust algorithm is designed.Decompose the total disturbance in self disturbance rejection,decompose it into external disturbance and internal unmodeled disturbance of electric vehicles,and design two observers to observe the two types of disturbances.The estimated values after observation are offset against the disturbance feedback,thereby improving the observation ability for external and internal disturbances of electric vehicles and enhancing their immunity.The robust fuzzy algorithm is introduced in the self disturbance rejection controller section to adjust the bandwidth parameters of the controller in real-time,so that the system can ensure optimal control bandwidth in any situation.Different operating conditions were designed,and experimental comparisons were made between robust self disturbance rejection control strategy,traditional self disturbance rejection,and robust fuzzy control.The correctness and superiority of the proposed control strategy were verified,and the results showed that the voltage error of robust self disturbance rejection was less than 3%,and voltage oscillation suppression could reach more than 95%.

关 键 词：电动汽车 自抗扰 鲁棒模糊算法 中间变流器 抗扰性 

分 类 号：TN701[电子电信—电路与系统]