| 153 | 1 | 201 |
| 下载次数 | 被引频次 | 阅读次数 |
针对并联逆变器传统下垂控制中电压电流双闭环方法的鲁棒性较差问题，提出了基于自适应鲁棒的终端积分滑模控制律的下垂控制策略。分析滑模控制的收敛速度、响应时间和抖振幅度三个指标，在终端滑模控制律中增加积分环节建立一类扩展滑模控制律。其次，针对系统参数扰动及直流源侧电压的不确定性，利用自适应鲁棒控制实现抑制扰动，将输出电压控制在参考电压的合适范围内，提高了系统的鲁棒性。最后，综合终端积分滑模控制律，根据LC型并联三相逆变器的下垂控制模型，实现逆变器输出电压的自适应鲁棒跟踪控制，有效实现孤岛模式下逆变电源并联干扰抑制。通过MATLAB/Simulink建立并联逆变器的仿真控制模型并进行电路实验，验证了本文控制器的可行性和有效性。
Abstract：This paper proposes a droop control strategy based on adaptive robust terminal integral sliding mode control law for the poor robustness of the traditional voltage and current double closed-loop method in parallel inverter droop control. Firstly,the convergence speed, response time, and vibration amplitude of sliding mode control are analyzed, and an extended sliding mode control law is established by adding an integral link to the terminal sliding mode control law. Secondly, in response to system parameter disturbance and uncertainty of DC source side voltage, adaptive robust control is used to suppress the disturbance, and the output voltage is controlled within the appropriate range of the reference voltage, which improves the robustness of the system. Finally, based on the terminal integral sliding mode control law, adaptive robust tracking control of the inverter's output voltage has been achieved by using the droop control model of the LC-type parallel three-phase inverter,which efficiently mitigates the disturbance from the inverter power supply's parallel control in island mode. A simulation control model of the parallel inverter has been established by using MATLAB/Simulink and circuit experiments have been carried out to verify the feasibility and effectiveness of the proposed controller.
[1]朱珊珊,汪飞,郭慧,等.直流微电网下垂控制技术研究综述[J].中国电机工程学报,2018,38(1):72-84,344.
[2] Suyanto H, Irawati R. Study trends and challenges of the development of micro-grids[C]//2017 6th IEEE International Conference on Advanced Logistics and Transport(ICALT)IEEE, 2017:160-164
[3]吴静妹,陈玲,胡徐胜.基于滑模变结构光伏并网逆变器控制研究[J].辽宁工业大学学报(自然科学版), 2020, 40(5):301-304,331.
[4] S A V,N P,C M C, et al. Mixed droop-controller performances in islanded microgrids having asymmetrical loads[J].Sādhanā, 2023(48):136-141.
[5]曹以龙,于超众,吴一庆,等.基于改进下垂控制的并联电流源环流抑制策略[J].科学技术与工程,2022,22(33):14736-14743.
[6]张春森,陈铁,柯颢云,等.微电网孤岛模式下虚拟同步发电机的频率控制研究[J].电工材料, 2020(2):21-25.
[7] Rosini A. Power sharing in droop controlled microgrids[C]//2019 11th International Symposium on Advanced Topics in Electrical Engineering(ATEE). IEEE,2019:1-5.
[8]李红萍,杨洪耕,曾巧燕,等.孤岛型微电网中改进下垂控制策略[J].电力系统及其自动化学报,2017,29(4):49-54.
[9] Qi Y, Fang J Y, Tang Y. Utilizing the dead-time effect to achieve decentralized reactive power sharing in islanded AC microgrids[J]. IEEE Journal of Emerging and Selected Topics in Power Electronics, 2020, 8(3):2350-2361.
[10] Singh S, Fulwani D, Kumar V. Robust sliding-mode control of dc/dc boost converter feeding a constant power load[J].Power Electronics Iet, 2015, 8(7):1230-1237.
[11] Kavitha A, Uma G, Reesha M B. Analysis of fast-scale instability in a power factor correction Cuk converter[J]. IET Power Electronics, 2012, 5(8):1333-1
[12] Teng H D, Ning L H, Yin Y J, et al. Adaptive Droop Control for DC Voltage Deviation andPower Sharing in Multiterminal DC(MTDC)Grids[C]//IOP Conference Series:Materials Science and Engineering. IOP Publishing, 2019,486(1):012041.
[13] Young K D, Utkin V I, Ozguner U. A Control Engineer’s Guide to Sliding Mode Control[J], IEEE Transactions on Control Systems Technology, 1999,7(3):328-342.
[14] Karaki A, Begovic M, Bayhan S, et al. Frequency and voltage restoration for droop controlled AC microgrids[C]//20192nd International Conference on Smart Grid and Renewable Energy(SGRE). IEEE, 2019:1-6.
[15]吴中东,丁石川,郭小璇,等.一种并联逆变器自适应下垂控制方法[J].电力系统保护与控制,2023,51(7):84-94.
基本信息:
中图分类号:TM464;TP273
引用信息:
[1]彭云建,张绍良,李正可,等.基于终端积分滑模的三相逆变器自适应下垂控制方法[J].深圳信息职业技术学院学报,2024,22(02):29-37.
基金信息:
国家自然科学基金（项目编号：62173151,61573154）
2024-04-15
2024-04-15