MODULAR THREE-PHASE PHOTOVOLTAIC INVERTER AND ITS DISTRIBUTED ADAPTIVE BOOST CONTROL STRATEGY

Ge Xiaolu; Pan Shangzhi; Dang Xinghua; Gong Jinwu; Zha Xiaoming

doi:10.19912/j.0254-0096.tynxb.2022-1804

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Acta Energiae Solaris Sinica ›› 2024, Vol. 45 ›› Issue (3) : 533-541. DOI: 10.19912/j.0254-0096.tynxb.2022-1804

MODULAR THREE-PHASE PHOTOVOLTAIC INVERTER AND ITS DISTRIBUTED ADAPTIVE BOOST CONTROL STRATEGY

Ge Xiaolu, Pan Shangzhi, Dang Xinghua, Gong Jinwu, Zha Xiaoming

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Abstract

Aiming at a series of problems caused by the cascaded H-bridge double-line frequency voltage ripple and power mismatch at the present stage, a modular three-phase photovoltaic inverter topology based on a four-port LLC is proposed to solve the inter-phase power mismatch problem fundamentally. Meanwhile, this topology is able to suppress the double-line frequency voltage ripple in the output power of the system. The essential reasons for the formation of the in-phase power mismatch problem is summarized and analyzed and an adaptive boosting distributed control strategy is proposed to improve the ability of the system to cope with the in-phase power mismatch and expand the stable operation range of the cascade system in the paper. The distributed control architecture reduces the information interaction between individual modules and reduces the complexity of the control system. Simulations and experiments verify the effectiveness of the proposed topology and control strategy.

Key words

photovoltaic inverter / cascade H-bridge / distributed control / power mismatch

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Ge Xiaolu, Pan Shangzhi, Dang Xinghua, Gong Jinwu, Zha Xiaoming. MODULAR THREE-PHASE PHOTOVOLTAIC INVERTER AND ITS DISTRIBUTED ADAPTIVE BOOST CONTROL STRATEGY[J]. Acta Energiae Solaris Sinica. 2024, 45(3): 533-541 https://doi.org/10.19912/j.0254-0096.tynxb.2022-1804

References

[1] 杨思为, 张兴, 毛旺, 等. 弱电网下级联H桥光伏并网逆变器稳定性分析[J]. 太阳能学报, 2022, 43(1): 398-405.
YANG S W, ZHANG X, MAO W, et al.Stability analysis of CHB photovoltaic grid-connected inverter in weak grid[J]. Acta energiae solaris sinica, 2022, 43(1): 398-405.
[2] KO Y J, ANDRESEN M, WANG K G, et al.Modulation for cascaded multilevel converters in PV applications with high input power imbalance[J]. IEEE transactions on power electronics, 2021, 36(9): 10866-10878.
[3] WANG K G, WU X J, LIU F, et al.Cascaded H-bridge multilevel converter topology for large-scale photovoltaic system with balanced operation[J]. IECON 2017-43rd Annual Conference of the IEEE Industrial Electronice Society, Bejing, China, 2017: 6452-6457.
[4] XIAO B L, HANG L J, MEI J, et al.Modular cascaded H-bridge multilevel PV inverter with distributed MPPT for grid-connected applications[J]. IEEE transactions on industry applications, 2015, 51(2): 1722-1731.
[5] YU Y F, KONSTANTINOU G, HREDZAK B, et al.Power balance optimization of cascaded H-bridge multilevel converters for large-scale photovoltaic integration[J]. IEEE transactions on power electronics, 2016, 31(2):1108-1120.
[6] MIRANBEIGI M, IMAN-EINI H.Hybrid modulation technique for grid-connected cascaded photovoltaic systems[J]. IEEE transactions on industrial electronics, 2016, 63(12): 7843-7853.
[7] LIU L M, LI H, XUE Y S, et al.Decoupled active and reactive power control for large-scale grid-connected photovoltaic systems using cascaded modular multilevel converters[J]. IEEE transactions on power electronics, 2015, 30(1): 176-187.
[8] 徐君, 张兴, 赵涛, 等. 扩大级联H桥光伏逆变器运行范围的控制策略[J]. 太阳能学报, 2021, 42(5): 240-245.
XU J, ZHANG X, ZHAO T, et al.Control strategy for exteding operation Rang of cascaded H-bridge photovoltaic inverter[J]. Acta energiae solaris sinica, 2021, 42(5): 240-245.
[9] GUI Y H, BENDTSEN J D, STOUSTRUP J.Coordinated control of PV inverters in distribution grid using local and centralized control[C]//IECON 2020 the 46th Annual Conference of the IEEE Industrial Electronics Society. Singapore, 2020: 1773-1778.
[10] LU M H, DUTTA S, JOHNSON B.Self-synchronizing cascaded inverters with virtual oscillator control[J]. IEEE transactions on power electronics, 2022, 37(6): 6424-6436.