A CONTROL METHOD FOR MULTI-FUNCTIONAL PV GRID-CONNECTED INVERTER

Xiao Huagen; Luo Yuanqing

doi:10.19912/j.0254-0096.tynxb.2024-2033

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Acta Energiae Solaris Sinica ›› 2026, Vol. 47 ›› Issue (3) : 739-746. DOI: 10.19912/j.0254-0096.tynxb.2024-2033

A CONTROL METHOD FOR MULTI-FUNCTIONAL PV GRID-CONNECTED INVERTER

Xiao Huagen, Luo Yuanqing

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Abstract

In order to solve the problems of low utilization rate of distributed photovoltaic grid-connected inverters and high cost of power quality control at the end of the distribution network, a control method for a three-phase four-wire multi-functional photovoltaic grid-connected inverter was proposed. By analyzing the urgency of the demand for photovoltaic power generation, reactive power compensation, harmonic control and three-phase imbalance compensation at the end of the distribution network, the priority of photovoltaic power generation function and various power quality control functions is established, and the target current distribution method of multi-functional photovoltaic grid-connected inverter is proposed, so that the photovoltaic grid-connected inverter can output corresponding currents according to the priority of the power quality compensation for the distribution network. The simulation results show that this method can not only ensure the effective utilization of photovoltaic power, but also make full use of the residual capacity of the inverter to control power quality, improve the utilization efficiency of photovoltaic grid-connected inverters and reduce the cost of power quality control in distribution network.

Key words

photovoltaic / grid-connected inverter / power quality / reactive compensation / three-phase unbalance / harmonic suppression

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Xiao Huagen, Luo Yuanqing. A CONTROL METHOD FOR MULTI-FUNCTIONAL PV GRID-CONNECTED INVERTER[J]. Acta Energiae Solaris Sinica. 2026, 47(3): 739-746 https://doi.org/10.19912/j.0254-0096.tynxb.2024-2033

References

[1] LIN L J, JIA Q Q, LYU C H, et al.Partitional collaborative mitigation strategy of distribution network harmonics based on distributed model predictive control[J]. IEEE transactions on smart grid, 2023, 14(3): 1998-2009.
[2] 李聪, 张琦, 梁欢, 等. 基于数据回归的光伏并网逆变器非线性特征补偿控制方法研究[J]. 太阳能学报, 2024, 45(12): 1-9.
LI C, ZHANG Q, LIANG H, et al.Research on nonlinear feature compensation control method for photovoltaic grid-connected inverters based on data regression[J]. Acta energiae solaris sinica, 2024, 45(12): 1-9.
[3] XIAO H G, ZHANG Y X.An optimal parameter design method for cascaded H-bridge multi-level converter in wind farm[J]. IET renewable power generation, 2024, 18(15): 3443-3451.
[4] HUANG H D, ZHANG W T, XU Y X, et al.A method for PWM frequency harmonic suppression using zero-vector switching SVPWM strategy in three-level inverter drive systems[J]. IEEE journal of emerging and selected topics in power electronics, 2025, 13(2): 1482-1491.
[5] LI R S, WONG P, WANG K, et al.Power quality enhancement and engineering application with high permeability distributed photovoltaic access to low-voltage distribution networks in Australia[J]. Protection and control of modern power systems, 2020, 5(3): 1-7.
[6] 周皓, 李伟力. 基于分频控制的微电网储能变流器并网电能质量主动控制策略[J]. 太阳能学报, 2021, 42(2): 330-337.
ZHOU H, LI W L.Grid-connecting power quality active control strategy for microgrid power conversion frequency-dividing control[J]. Acta energiae solaris sinica, 2021, 42(2): 330-337.
[7] SU X J, MASOUM M A S, WOLFS P J. Optimal PV inverter reactive power control and real power curtailment to improve performance of unbalanced four-wire LV distribution networks[J]. IEEE transactions on sustainable energy, 2014, 5(3): 967-977.
[8] YANG Y H, BLAABJERG F, WANG H, et al.Power control flexibilities for grid-connected multi-functional photovoltaic inverters[J]. IET renewable power generation, 2016, 10(4): 504-513.
[9] 李志军, 李格格, 张家安. 电能质量变权综合评估及多功能并网逆变器多目标优化[J]. 太阳能学报, 2022, 43(11): 515-521.
LI Z J, LI G G, ZHANG J A.Power quality variable weight comprehensive evaluation and multiobjective optimazation of multifunctional grid-connected inverter[J]. Acta energiae solaris sinica, 2022, 43(11): 515-521.
[10] GOLLA M, THANGAVEL S, SIMON S P, et al.A novel control scheme using UAPF in an integrated PV grid-tied system[J]. IEEE transactions on power delivery, 2023, 38(1): 133-145.
[11] 江友华, 邹明强, 陈江伟, 等. 多功能并网逆变器的控制与柔性定制策略研究[J]. 电力电子技术, 2018, 52(12): 102-106.
JIANG Y H, ZOU M Q, CHEN J W, et al.Research and control strategy of flexible customization multi-functional grid-connected inverter[J]. Power electronics, 2018, 52(12): 102-106.
[12] 宋振浩, 吕志鹏, 刘志涵, 等. 多功能并网逆变器电能质量优化控制策略[J]. 中国科技论文, 2022, 17(3): 339-347.
SONG Z H, LÜ Z P, LIU Z H, et al.Power quality optimization control strategy of multi-function grid-connected inverter[J]. China sciencepaper, 2022, 17(3): 339-347.
[13] KANAGARAJ N, VIJAYAKUMAR M, RAMASAMY M, et al.Energy management and power quality improvement of hybrid renewable energy generation system using coordinated control scheme[J]. IEEE access, 2023, 11: 93254-93267.
[14] 曾正, 邵伟华, 赵伟芳, 等. 多功能并网逆变器与并网微电网电能质量的分摊控制[J]. 中国电机工程学报, 2015, 35(19): 4947-4955.
ZENG Z, SHAO W H, ZHAO W F, et al.Coordination control of multiple multi-functional grid-tied inverters to share power quality issues for grid-connected micro-grid[J]. Proceedings of the CSEE, 2015, 35(19): 4947-4955.
[15] 孙广宇, 李永丽, 靳伟, 等. 基于三相多功能逆变器的微电网电能质量综合治理策略[J]. 电网技术, 2019, 43(4): 1211-1219.
SUN G Y, LI Y L, JIN W, et al.A comprehensive power quality control strategy for microgrid based on three-phase multi-function inverters[J]. Power system technology, 2019, 43(4): 1211-1219.
[16] 肖华根, 罗安, 王逸超, 等. 微网中并联逆变器的环流控制方法[J]. 中国电机工程学报, 2014, 34(19): 3098-3104.
XIAO H G, LUO A, WANG Y C, et al.A circulating current control method for paralleled inverters in microgrids[J]. Proceedings of the CSEE, 2014, 34(19): 3098-3104.