DESIGN OF LOAD-SIDE VOLTAGE-POWER SELF-COORDINATED CONTROL SYSTEM FOR MICRO-GRID INVERTERS BASED ON SLIDING MODE STRATEGY

Zhang Weiqi; Wang Yanmin; Zhang Hanqing; Wang Jiaming

doi:10.19912/j.0254-0096.tynxb.2024-0355

PDF(5124 KB)

Acta Energiae Solaris Sinica ›› 2025, Vol. 46 ›› Issue (7) : 164-176. DOI: 10.19912/j.0254-0096.tynxb.2024-0355

Special Topics of Academic Papers at the 43th Annual Meeting of the China Association for Science and Technology

DESIGN OF LOAD-SIDE VOLTAGE-POWER SELF-COORDINATED CONTROL SYSTEM FOR MICRO-GRID INVERTERS BASED ON SLIDING MODE STRATEGY

Zhang Weiqi, Wang Yanmin, Zhang Hanqing, Wang Jiaming

Author information +

History +

Abstract

The uncertainty of load-side grid-connected/off-grid operation state of micro-grid seriously affects the output state configuration and hardware security of micro-grid inverters. In order to enhance the self-coordinated output capability of the inverter output state and simplify the complexity of multi-mode control systems, a voltage-power self-coordinated control system based on sliding mode control （SMC） is designed in this paper. Firstly, the power transmission model of the micro-grid inverter is established. Based on the analysis of output voltage characteristics under active/reactive power constraints, a virtual compensation voltage is introduced to construct the voltage-power self-coordination control relationship. Then, the SMC strategy is used to realize the function of each module within the control system, and the stability of SMC control law is analyzed. Finally, simulation under different working conditions are designed to analyze and verify that the proposed control system can self-coordinate the inverter output voltage-power state according to the operating state of the load side under the limitation of the maximum output power of the inverter, and effectively reduce the response time and output steady-state error of the system while meeting the power demand of the load side.

Key words

microgrids / electric inverters / sliding mode control / self-coordinated control / power constrain / voltage compensation

Cite this article

EndNote

Ris (Procite)

Bibtex

Download Citations

Zhang Weiqi, Wang Yanmin, Zhang Hanqing, Wang Jiaming. DESIGN OF LOAD-SIDE VOLTAGE-POWER SELF-COORDINATED CONTROL SYSTEM FOR MICRO-GRID INVERTERS BASED ON SLIDING MODE STRATEGY[J]. Acta Energiae Solaris Sinica. 2025, 46(7): 164-176 https://doi.org/10.19912/j.0254-0096.tynxb.2024-0355

References

[1] 李啸骢, 侯立亮, 罗雪丽, 等. 三相逆变并网系统的分数阶建模与控制器设计研究[J]. 太阳能学报, 2023, 44(3): 415-424.
LI X C, HOU L L, LUO X L, et al.Research on fractional modeling and controller design of three-phase inverter grid-connected system[J]. Acta energiae solaris sinica, 2023, 44(3): 415-424.
[2] 胡存刚, 王海涛, 朱文杰, 等. 三相逆变器数字孪生系统的参数辨识研究[J]. 电力系统保护与控制, 2023, 51(11): 177-187.
HU C G, WANG H T, ZHU W J, et al.Parameter identification of three-phase inverters based on a digital twin system[J]. Power system protection and control, 2023, 51(11): 177-187.
[3] 代云中, 唐浩, 刘铭煊, 等. 一种Z源光伏并网逆变器及其共模漏电流抑制[J]. 太阳能学报, 2024, 45(3): 517-522.
DAI Y Z, TANG H, LIU M X, et al.Z-source photovoltaic grid-connected inverter with common-mode leakage current inhibition[J]. Acta energiae solaris sinica, 2024, 45(3): 517-522.
[4] MOROZOVSKA K, HELENO M, MEZA A V, et al.Including dynamic line rating into the optimal planning of distributed energy resources[J]. IEEE transactions on smart grid, 2021, 12(6): 5052-5059.
[5] 姜恩宇, 陈周, 史雷敏, 等. 计及多重不确定性与综合贡献率的多微网合作运行策略[J]. 太阳能学报, 2023, 44(10): 80-89.
JIANG E Y, CHEN Z, SHI L M, et al.Cooperative operation strategy of multi-microgrids based on multiple uncertainties and comprehen sive contribution rate[J]. Acta energiae solaris sinica, 2023, 44(10): 80-89.
[6] LI Z L, CHAN K W, HU J F, et al.An adaptive fault ride-through scheme for grid-forming inverters under asymmetrical grid faults[J]. IEEE transactions on industrial electronics, 2022, 69(12): 12912-12923.
[7] 赵国军, 陈坤燚, 曾伟, 等. 计及等效负载变化的消弧逆变器性能分析与设计[J]. 电力系统保护与控制, 2023, 51(1): 148-157.
ZHAO G J, CHEN K Y, ZENG W, et al.Performance analysis and design of an arc suppression inverter considering equivalent load change[J]. Power system protection and control, 2023, 51(1): 148-157.
[8] 任碧莹, 赵欣荣, 孙向东, 等. 不平衡负载下基于改进下垂控制策略的组合式三相逆变器控制[J]. 电网技术, 2016, 40(4): 1163-1168.
REN B Y, ZHAO X R, SUN X D, et al.Improved droop control based three-phase combined inverters for unbalanced load[J]. Power system technology, 2016, 40(4): 1163-1168.
[9] 陈杰, 闫震宇, 赵冰, 等. 下垂控制三相逆变器阻抗建模与并网特性分析[J]. 中国电机工程学报, 2019, 39(16): 4846-4856
CHEN J, YAN Z Y, ZHAO B, et al.On the impedance modelling and grid-connected characteristics of the three-phase droop controlled inverter[J]. Proceedings of the CSEE, 2019, 39(16): 4846-4856.
[10] BOTTRELL N, GREEN T C.Comparison of current-limiting strategies during fault ride-through of inverters to prevent latch-up and wind-up[J]. IEEE transactions on power electronics, 2014, 29(7): 3786-3797.
[11] LI Z C, REN M W, CHEN Z L, et al.A bi-sliding mode PI control of DC-link voltage of three-phase three-wire shunt active power filter[J]. IEEE journal of emerging and selected topics in power electronics, 2022, 10(6): 7581-7588.
[12] ESTRADA L, VAZQUEZ N, VAQUERO J, et al.Finite control set-model predictive control based on sliding mode for bidirectional power inverter[J]. IEEE transactions on energy conversion, 2021, 36(4): 2814-2824.
[13] RAFAQ M S, ALI QASEM MOHAMMED S, CHOI H H, et al. An improved sliding mode control technique to mitigate mismatched parameter uncertainties of three-phase voltage source inverters[J]. IEEE access, 2020, 8: 81932-81942.
[14] 王盼宝, 王卫, 孟尼娜, 等. 直流微电网离网与并网运行统一控制策略[J]. 中国电机工程学报, 2015, 35(17): 4388-4396.
WANG P B, WANG W, MENG N N, et al.Unified control strategy of islanding and grid-connected operations for DC microgrid[J]. Proceedings of the CSEE, 2015, 35(17): 4388-4396.
[15] DE BRABANDERE K, BOLSENS B, VAN DEN KEYBUS J, et al. A voltage and frequency droop control method for parallel inverters[J]. IEEE transactions on power electronics, 2007, 22(4): 1107-1115.
[16] 高家元, 赵晋斌, 陈晓博, 等. 入网电压控制型逆变器的功率传输特性分析[J]. 电网技术, 2018, 42(4): 1308-1315.
GAO J Y, ZHAO J B, CHEN X B, et al.Analysis of power transmission characteristics of grid-connected voltage-controlled inverter[J]. Power system technology, 2018, 42(4): 1308-1315.
[17] 王均, 郭倩, 马皓, 等. 三相逆变器带整流性负载建模与设计[J]. 太阳能学报, 2017, 38(9): 2377-2384.
WANG J, GUO Q, MA H, et al.Modeling and design of three-phase inverter with rectifier load[J]. Acta energiae solaris sinica, 2017, 38(9): 2377-2384.
[18] WEN B, BOROYEVICH D, BURGOS R, et al.Small-signal stability analysis of three-phase AC systems in the presence of constant power loads based on measured d-q frame impedances[J]. IEEE transactions on power electronics, 2015, 30(10): 5952-5963.
[19] FALLAHA C J, SAAD M, KANAAN H Y, et al.Sliding-mode robot control with exponential reaching law[J]. IEEE transactions on industrial electronics, 2011, 58(2): 600-610.
[20] GB/T3956—2008, 电缆的导体[S].
GB/T3956—2008, Conductors of insulated cables[S].
[21] SINGH J K, PRAKASH S, AL JAAFARI K, et al.Active disturbance rejection control of photovoltaic three-phase grid following inverters under uncertainty and grid voltage variations[J]. IEEE transactions on power delivery, 2023, 38(5): 3155-3168.