基于电容能量平衡的独立励磁直流发电系统外环单比例调节控制策略  

Outer Loop Single Proportional Regulation Control Strategy of Independent Excitation DC Power Generation System Based on Capacitor Energy Balance

作　　者：陈凯 王宇[1] 夏宇航 CHEN Kai;WANG Yu;XIA Yuhang(College of Automation Engineering,Nanjing University of Aeronautics&Astronautics,Nanjing 210016,Jiangsu Province,China)

机构地区：[1]南京航空航天大学自动化学院,江苏省南京市210016

出　　处：《中国电机工程学报》2024年第23期9275-9284,I0013,共11页PROCEEDINGS OF THE CHINESE SOCIETY FOR ELECTRICAL ENGINEERING

基　　金：国家自然科学基金项目(51977107);航空科学基金(2020HKZ0001)。

摘　　要：独立励磁直流发电系统输出电能质量取决于其电压控制性能。然而基于比例积分调节的电压闭环控制输出响应慢、恢复波形超调大。此外,基于电容能量控制(capacitor energy control,CEC)的方法外环积分系数与负载电流反馈相矛盾,影响输出电压稳态精度。针对以上问题,该文基于CEC提出一种外环单比例调节控制策略。首先,外环仅采用比例控制避免了电容储能误差积分引起系统超调的问题;其次,基于电容电荷平衡控制采用动态过程线性控制到非线性控制的转换思想计算励磁电流最快线性上升斜率并确定外环比例系数,使得系统动态响应最快;最后,通过实验验证所提控制策略的有效性。结果表明,所提控制策略动态性能优良、稳态电压精度高。The quality of the output electric energy of the independent excitation DC power generation system(IEDGS)depends on its voltage control performance.However,the voltage closed-loop control(VCC)based on proportional integral(PI)regulation has a slow output response and a large overshoot in recovery waveform.Besides,the traditional method based on capacitor energy control(CEC)has a contradiction between the integral coefficient of the outer loop and the feedback of the load current,which affects the steady-state accuracy of the output voltage.To solve these problems,this paper proposes an outer loop single proportional adjustment control strategy based on CEC.First,only proportional control is used in the outer loop to avoid system overshoot caused by capacitor energy storage error integration.Then,based on capacitor charge balance control(CBC),dynamic process linear control is used to calculate the fastest linear rising slope of excitation current and determine the outer loop proportional coefficient,thereby optimizing the system's dynamic response for maximum speed.Finally,the effectiveness of the proposed control strategy is verified through experiments.Results show that proposed control method has excellent dynamic performance and high steady-state voltage accuracy.

关 键 词：电容能量控制 独立励磁发电系统 比例积分调节 动态性能 稳压控制 

分 类 号：TM351[电气工程—电机]