准Z源逆变器直流链电压跌落的判断和抑制方法

doi:10.19595/j.cnki.1000-6753.tces.211197

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Abstract The quasi Z-source inverter is a special boost converter with ability of short-circuiting the bridge arm in the same phase. It has a wide application prospect in new energy electric vehicles and distributed generation systems, such as photovoltaic and wind power systems. However, there is a potential problem when the DC-link voltage is boosted, i.e., the inductor on the dc-side of inverter with insufficient energy storage will make the diode current discontinuous. This will lead to DC-link voltage sag, a phenomenon that seriously reduces the output performance and safety and reliability of the quasi Z-source inverter. To solve this problem, the definition of voltage sag depth is firstly proposed to calculate and measure the rise and fall amplitude of DC-link voltage. Secondly, based on the comprehensive analysis of the factors causing the diode current interruption, a method for judging DC-link voltage sag is proposed. It can be used to predict whether DC-link voltage drops or not according to the system parameters and state. Thirdly, to prevent the quasi Z-source inverter from operating in the abnormal state, a method for suppressing DC-link voltage sag is proposed based on the idea of system coordinated control. The results indicate that the proposed method can accurately predict the conditions of DC-link voltage sag and effectively avoid DC-link voltage sag.

Key words： Quasi Z-source inverter DC-link voltage voltage sag depth diode current interruption

Received: 04 August 2021

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	Xu Yuhao
	Xiao Haifeng
	Ma Zhao
	Gao Wen
	He Yuyao

Cite this article:

Xu Yuhao,Xiao Haifeng,Ma Zhao等. Judgment and Suppression Methods for DC-Link Voltage Sag of Quasi Z-Source Inverter[J]. Transactions of China Electrotechnical Society, 2022, 37(14): 3688-3700.

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https://dgjsxb.ces-transaction.com/EN/10.19595/j.cnki.1000-6753.tces.211197 OR https://dgjsxb.ces-transaction.com/EN/Y2022/V37/I14/3688

[1] Zhao Nan, Liu Jiangqiang, Ai Yu, et al.Power-linked predictive control strategy for power electronic traction transformer[J]. IEEE Transactions on Power Electronics, 2020, 35(6): 6559-6571.
[2] Elsaharty M A, Luna A, Candela J I, et al.A unified power flow controller using a power electronics integrated transformer[J]. IEEE Transactions on Power Delivery, 2019, 34(3): 828-839.
[3] 李晓华, 赵容健, 田晓彤, 等. 逆变器供电对电动汽车内置式永磁同步电机振动噪声特性影响研究[J]. 电工技术学报, 2020, 35(21): 4455-4464.
Li Xiaohua, Zhao Rongjian, Tian Xiaotong, et al.Study on vibration and noise characteristics of interior permanent magnet synchronous machine for electric vehicles by inverter[J]. Transactions of China Electrotechnical Society, 2020, 35(21): 4455-4464.
[4] Ellabban O, Abu-Rub H.Z-source inverter: topology improvements review[J]. IEEE Industrial Electronics Magzine, 2016, 10(1): 6-24.
[5] Ho A V, Chun T, Kim H G.Extended Boost active switched capacitor/switched inductor quasi Z-source inverters[J]. IEEE Transactions on Power Electronics, 2015, 30(10): 5681-5690.
[6] 张千帆, 董帅, 周超伟, 等. Z源逆变器直通电流回路及功率开关管电流应力分析[J]. 电工技术学报, 2016, 31(4): 123-128.
Zhang Qianfan, Dong Shuai, Zhou Chaowei, et al.Analysis of circuit path and current stress of power devices under shoot-through mode in Z-source inverter[J]. Transactions of China Electrotechnical Society, 2016, 31(4): 123-128.
[7] Siwakoti Y P, Peng Fangzheng, Blaabjerg, et al. Impedance-source networks for electric power conversion part II: review of control and modulation techniques[J]. IEEE Transactions on Power Electro-nics, 2015, 30(2): 1887-1906.
[8] 程启明, 江畅, 沈磊, 等. 准Z源三电平并网逆变器的无源控制策略[J]. 电工技术学报, 2020, 35(20): 4361-4372.
Cheng Qiming, Jiang Chang, Shen Lei, et al.Passivity based control strategy of quasi Z-source three-level grid-connected inverter[J]. Transactions of China Electrotechnical Society, 2020, 35(20): 4361-4372.
[9] 张峰, 谢运祥, 胡炎申, 等. 临界模式混合光伏微型逆变器的特性分析[J]. 电工技术学报, 2020, 35(6): 1290-1302.
Zhang Feng, Xie Yunxiang, Hu Yanshen, et al.Characteristics analysis for a boundary conduction mode hybrid-type photovoltaic micro-inverter[J]. Transactions of China Electrotechnical Society, 2020, 35(6): 1290-1302.
[10] 朱泓晖, 屈艾文, 周扬忠. 基于储能型准Z源光伏并网逆变器的改进型自适应粒子群最大功率点跟踪算法研究[J]. 电气技术, 2021, 22(3): 6-13.
Zhu Honghui, Qu Aiwen, Zhou Yangzhong.Research on improved adaptive particle swarm optimization maximum power point tracking algorithm based on energy stored quasi Z-source photovoltaic grid connected inverter[J]. Electrical Engineering, 2021, 22(3): 6-13.
[11] 蔡春伟, 曲延滨, 盛况. 准Z源逆变器的暂态建模与分析[J]. 电机与控制学报, 2011, 15(10): 7-13.
Cai Chunwei, Qu Yanbin, Sheng Kuang.Transient modeling and analysis of quasi Z-source inverter[J]. Electric Machines and Control, 2011, 15(10): 7-13.
[12] 贺昱曜, 张柳明扬, 陈金平. 抑制Z-源逆变器母线电压跌落的空间矢量脉宽调制方法[J]. 电工技术学报, 2017, 32(2): 228-237.
He Yuyao, Zhang Liumingyang, Chen Jinping.Voltage drop suppression of Z-source inverter ssing space vector PWM method[J]. Transactions of China Electrotechnical Society, 2017, 32(2): 228-237.
[13] He Yuyao, Xu Yuhao, Chen Jinping.New space vector modulation strategies to reduce inductor current ripple of Z-source inverter[J]. IEEE Transa-ctions on Power Electronic, 2018, 33(3): 2643-2654.
[14] 高奇, 钱照明, 顾斌, 等. 阻抗型逆变器的一种非正常工作状态分析[J]. 电工技术学报, 2005, 20(8): 55-58.
Gao Qi, Qian Zhaoming, Gu Bin, et al.An abnormal operating state analysis of Z-source inverter[J]. Transactions of China Electrotechnical Society, 2005, 20(8): 55-58.
[15] Chauhan A K, Raghuram M, Singh S K.Nonzero discontinuous inductor current mode in certain Z-source converters[J]. IEEE Transactions on Power Electronic, 2018, 33(4): 2809-2814.
[16] Pashaei R, Babaei E, Cecati C, et al.Analysis of Z-source based DC/DC converter in CCM, DCM and BCM operations[C]//International Conference on Electrical Engineering/Electronics, Computer, Telecom-munications and Information Technology, ECTI-CON, Phuket, Thailand, 2017: 777-780.
[17] Kayiranga T, Li Hongbo, Lin Xinchun, et al.Abnormal operation State analysis and control of asymmetric impedance network-based quasi Z-source PV inverter[J]. IEEE Transactions on Industrial Electronics, 2016, 31(11): 7642-7650.
[18] 董帅, 张千帆, 王睿, 等. SVPWM控制时双向Z源逆变器电容电压纹波分析[J]. 电工技术学报, 2017, 32(24): 107-114.
Dong Shuai, Zhang Qianfan, Wang Rui, et al.Analysis of capacitor voltage ripple for bi-directional Z-source inverters based on SVPWM[J]. Transactions of China Electrotechnical Society, 2017, 32(24): 107-114.
[19] 董帅, 张千帆, 王睿, 等. Z源逆变器关键技术发展综述[J]. 电气工程学报, 2016, 11(3): 1-12.
Dong Shuai, Zhang Qianfan, Wang Rui, et al.Development of the Z-source inverters and its key technologies: a review[J]. Journal of Electrical Engineering, 2016, 11(3): 1-12.