MODULATION AND CONTROL STRATEGY OF NOVEL SINGLE-PHASE GRID-CONNECTED CURRENT SOURCE INVERTER

Xu Qiwei; Fu Yilun; Miao Yiru; Zhao Yizhou; Luo Lingyan

doi:10.19912/j.0254-0096.tynxb.2023-1922

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Acta Energiae Solaris Sinica ›› 2025, Vol. 46 ›› Issue (3) : 412-420. DOI: 10.19912/j.0254-0096.tynxb.2023-1922

MODULATION AND CONTROL STRATEGY OF NOVEL SINGLE-PHASE GRID-CONNECTED CURRENT SOURCE INVERTER

Xu Qiwei, Fu Yilun, Miao Yiru, Zhao Yizhou, Luo Lingyan

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Abstract

Compare to voltage source inverter, without adding dead time, current source inverter has the ability to boost the voltage, and no additional passive filter is required at the AC-side. However, the DC-link current is not a constant current source, and is generated by the voltage source and the DC-link inductor, so it is necessary to consider the DC-link current regulation in the control system. Therefore, in this paper, single-phase five-switch current source grid-connected inverter with DC-chopper is studied. Firstly, the reference calculation and the control method of the DC-link current is presented. Then, aiming at the problem that the switching signal of the current source inverter cannot be directly generated by the traditional modulation, the logic expression of the switching signal is deduced. Next, aiming at the peak resonance problem of the LC filter on the grid side, the active damping based on capacitor voltage is introduced, under the consideration of the digital delay, the mathematical model of the grid side structure is established and the optimization design method of proportional-resonance controller parameters is studied by combining the amplitude-frequency characteristic curve. Finally, the simulation model and experimental platform are constructed to carry out simulation and experimental verification. The results show that high-quality power with a good dynamic performance can be provided by the inverter, which proves that the theoretical analysis and the proposed method are correct and feasible.

Key words

photovoltaic power generation / pulse modulation / resonance / current source inverter / DC-link current / active damping

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Xu Qiwei, Fu Yilun, Miao Yiru, Zhao Yizhou, Luo Lingyan. MODULATION AND CONTROL STRATEGY OF NOVEL SINGLE-PHASE GRID-CONNECTED CURRENT SOURCE INVERTER[J]. Acta Energiae Solaris Sinica. 2025, 46(3): 412-420 https://doi.org/10.19912/j.0254-0096.tynxb.2023-1922

References

[1] 郑亚先, 杨争林, 冯树海, 等. 碳达峰目标场景下全国统一电力市场关键问题分析[J]. 电网技术, 2022, 46(1): 1-20.
ZHENG Y X, YANG Z L, FENG S H, et al.Key issue analysis in national unified power market under target scenario of carbon emission peak[J]. Power system technology, 2022, 46(1): 1-20.
[2] 梁军杨, 孔繁镍, 王振民, 等. 基于延时补偿的LCL型并网逆变器鲁棒控制策略[J]. 太阳能学报, 2023, 44(12): 444-452.
LIANG J Y, KONG F N, WANG Z M, et al.Robust control strategy of LCL-type grid-connected inverter based on delay compensation[J]. Acta energiae solaris sinica, 2023, 44(12): 444-452.
[3] 陈燕东, 王伊, 周乐明, 等. 弱电网下LCL逆变器阻尼谐振抑制与功率快速调节方法[J]. 电工技术学报, 2018, 33(11): 2564-2574.
CHEN Y D, WANG Y, ZHOU L M, et al.Damping resonance suppression and fast power regulation method for LCL-type inverter under weak grid[J]. Transactions of China Electrotechnical Society, 2018, 33(11): 2564-2574.
[4] 姜云龙, 司鑫尧, 史鸿飞, 等. 弱电网下计及锁相环影响的并网逆变器稳定性提升方法[J]. 电力系统自动化, 2022, 46(24): 113-120.
JIANG Y L, SI X Y, SHI H F, et al.Stability improvement method of grid-connected inverter considering phase-locked loop effect in weak grid[J]. Automation of electric power systems, 2022, 46(24): 113-120.
[5] 杨明, 杨杰, 赵铁英, 等. 基于数字控制延时的LCL型并网逆变器强鲁棒性加权平均电流控制策略[J]. 电机与控制学报, 2023, 27(2): 143-152.
YANG M, YANG J, ZHAO T Y, et al.Robust weighted average current control strategy for LCL grid-connected inverter considering digital control delay[J]. Electric machines and control, 2023, 27(2): 143-152.
[6] WANG Q, QIN W P, HAN X Q, et al.Robustness evaluation for harmonic suppression of LCL-type converter based on converter-side current feedback strategy under weak and distorted grid[J]. CPSS transactions on power electronics and applications, 2021, 6(2): 166-177.
[7] 赵振伟, 张民, 贾海涛, 等. 准Z源软开关高增益DC-DC变换器[J]. 太阳能学报, 2023, 44(10): 120-128.
ZHAO Z W, ZHANG M, JIA H T, et al.Soft switching high step-up DC-DC converter based on quasi-Z source[J]. Acta energiae solaris sinica, 2023, 44(10): 120-128.
[8] TITUS J, HARIKRISHNAN P, HATUA K.An SCR-based CSI-fed induction motor drive for high power medium voltage applications[J]. IEEE transactions on industrial electronics, 2021, 68(6): 4657-4666.
[9] WANG W Q, GAO F, YANG Y H, et al.An eight-switch five-level current source inverter[J]. IEEE transactions on power electronics, 2019, 34(9): 8389-8404.
[10] 郭强, 周琛力, 李山. 面向电流源型PWM整流器直流侧电压的多环路控制策略[J]. 电工技术学报, 2022, 37(8): 2051-2063.
GUO Q, ZHOU C L, LI S.A multiple loops control strategy based on DC link voltage of current source PWM rectifiers[J]. Transactions of China Electrotechnical Society, 2022, 37(8): 2051-2063.
[11] 苗轶如, 刘和平, 王华斌, 等. 单相电流源型逆变器储能电感电流优化调制及控制策略[J]. 电工技术学报, 2018, 33(6): 1227-1237.
MIAO Y R, LIU H P, WANG H B, et al.The modulation and control strategy of storage inductance current for single-phase current source inverter[J]. Transactions of China Electrotechnical Society, 2018, 33(6): 1227-1237.
[12] MIGLIAZZA G, BUTICCHI G, CARFAGNA E, et al.DC current control for a single-stage current source inverter in motor drive application[J]. IEEE transactions on power electronics, 2021, 36(3): 3367-3376.
[13] YANG S T, PENG F Z, LEI Q, et al.Current-fed quasi-Z-source inverter with voltage buck-boost and regeneration capability[J]. IEEE transactions on industry applications, 2011, 47(2): 882-892.
[14] LI Y W, PANDE M, ZARGARI N R, et al.DC-link current minimization for high-power current-source motor drives[J]. IEEE transactions on power electronics, 2009, 24(1): 232-240.
[15] 张迪, 王鹏磊, 王立乔, 等. 一种可抑制共模电流的三相Sepic电流源逆变器[J]. 太阳能学报, 2023, 44(8): 266-274.
ZHANG D, WANG P L, WANG L Q, et al.Three-phase sepic-type current source inverter that can suppress common mode current[J]. Acta energiae solaris sinica, 2023, 44(8): 266-274.
[16] 刘和平, 邱斌斌, 彭东林, 等. 电流型脉宽调制整流器间接电流控制改进策略[J]. 电网技术, 2012, 36(6): 182-187.
LIU H P, QIU B B, PENG D L, et al.An improved indirect current control strategy for current source PWM filter[J]. Power system technology, 2012, 36(6): 182-187.
[17] 黄勇军, 郭强, 李海啸. 基于直流电流二倍频分量抑制的电流源型PWM整流器控制策略[J]. 仪器仪表学报, 2022, 43(12): 228-237.
HUANG Y J, GUO Q, LI H X.A control strategy for current source PWM rectifier with suppressing double frequency component of DC current[J]. Chinese journal of scientific instrument, 2022, 43(12): 228-237.