直流微网母线电压纹波集中补偿自寻优策略

doi:10.16180/j.cnki.issn1007-7820.2022.06.011

Abstract

Abstract:

In order to suppress the secondary ripple of DC microgrid bus voltage, a centralized compensation self-optimization strategy of DC active power filter is proposed in this study. Based on the voltage/current double closed-loop control of bi-directional DC/DC converter, the DC bus voltage ripple control is added. A band-pass filter is introduced to eliminate the phase lag problem when the low-pass filter is used to extract the ripple in the traditional control method. The impedance coefficient K which is an important control parameter, is obtained by iterative self-optimization method to realize the real-time tracking and centralized compensation of DC bus voltage ripple by DC active power filter. In MATLAB/Simulink, simulation model of DC microgrid including an interlinking converter, two distributed generations, a DC load, a single-phase AC load and a DC-APF is built, and the corresponding experimental platform is established. Simulation and experimental results validate the effectiveness of the proposed control strategy.

Key words: DC microgrid, bus voltage, secondary ripple, DC active power filter, centralized compensation, self-optimization, bandpass filter, impedance coefficient

CLC Number:

TP273

HUANG Kai,ZHANG Guopeng,LI Zihan. Centralized Compensation Self-Optimization Strategy of Bus Voltage Ripple in DC Microgrid[J].Electronic Science and Technology, 2022, 35(6): 70-75.

Figures/Tables 12

Figure 1.

Figure 2.

Figure 3.

Figure 4.

Figure 5.

Table 1.

Figure 6.

Figure 7.

Figure 8.

Table 2.

Figure 9.

Figure 10.

References 20

[1]	徐鹏坤, 单晓晨. 基于光伏源的微电网孤岛/联网平滑切换控制[J]. 电子科技, 2018, 31(3):67-71.
	Xu Pengkun, Shan Xiaochen. A research on smooth switching between island and grid-connected operation mode based on microgrid with photovoltaic generations[J]. Electronic Science and Technology, 2018, 31(3):67-71.
[2]	张晋维, 李国平. 微电网多目标鲁棒优化运行[J]. 电子科技, 2019, 32(3):26-30.
	Zhang Jinwei, Li Guoping. Economic operation of microgrid considering operational risk and customer satisfaction[J]. Electronic Science and Technology, 2019, 32(3):26-30.
[3]	杨新法, 苏剑, 吕志鹏, 等. 微电网技术综述[J]. 中国电机工程学报, 2014, 34(1):57-70.
	Yang Xinfa, Su Jian, Lü Zhipeng, et al. Overview on micro-grid technology[J]. Proceedings of the CSEE, 2014, 34(1):57-70.
[4]	李霞林, 郭力, 王成山, 等. 直流微电网关键技术研究综述[J]. 中国电机工程学报, 2016, 36(1):2-17.
	Li Xialin, Guo Li, Wang Chengshan, et al. Key technologies of DC microgrids: an overview[J]. Proceedings of the CSEE, 2016, 36(1):2-17.
[5]	Mírez J. A modeling and simulation of optimized interconnection between DC microgrids with novel strategies of voltage, power and control[C]. Nuremburg: Proceedings of IEEE the Second International Conference on DC Microgrids, 2017.
[6]	Alam M, Kumar K, Srivastava J, et al. A study on DC microgrids voltages based on photovoltaic and fuel cell power generators[C]. Paris: Proceedings of the Seventh International Conference on Renewable Energy Research and Applications, 2018.
[7]	王成山, 李薇, 王议峰, 等. 直流微电网母线电压波动分类及抑制方法综述[J]. 中国电机工程学报, 2017, 37(1):84-98.
	Wang Chengshan, Li Wei, Wang Yifeng, et al. DC bus voltage fluctuation classification and restraint methods review for DC microgrid[J]. Proceedings of the CSEE, 2017, 37(1):84-98.
[8]	吴卫民, 何远彬, 耿攀, 等. 直流微网研究中的关键技术[J]. 电工技术学报, 2012, 27(1):98-106.
	Wu Weimin, He Yuanbin, Geng Pan, et al. Key technologies for DC micro-grids[J]. Transactions of China Electrotechnical Society, 2012, 27(1):98-106.
[9]	张国驹, 唐西胜, 周龙, 等. 基于互补PWM控制的Buck/Boost双向变换器在超级电容器储能中的应用[J]. 中国电机工程学报, 2011, 31(6):15-21.
	Zhang Guoju, Tang Xisheng, Zhou Long, et al. Research on complementary PWM controlled Buck/Boost bi-directional converter in supercapacitor energy storage[J]. Proceedings of the CSEE, 2011, 31(6):15-21.
[10]	朱晓荣, 张雨濛, 荆树志. 一种不平衡负载下直流微电网电压脉动抑制方法[J]. 电工技术学报, 2018, 33(15):3437-3449.
	Zhu Xiaorong, Zhang Yumeng, Jing Shuzhi. A voltage ripple suppression method of DC microgrid under unbalanced load[J]. Transactions of China Electrotechnical Society, 2018, 33(15):3437-3449.
[11]	朱晓荣, 陈朝迁, 张雨濛. 不平衡电网电压下直流微电网电压/并网电流综合控制策略[J]. 高电压技术, 2019, 45(8):2562-2570.
	Zhu Xiaorong, Chen Chaoqian, Zhang Yumeng. Comprehensive control strategy of grid-connected current and DC microgrid voltage under unbalanced grid voltage[J]. High Voltage Engineering, 2019, 45(8):2562-2570.
[12]	Li S, Lee A T L, Tan S C, et al. A plug-and-play ripple mitigation approach for DC-links in hybrid systems[C]. Long Beach: Proceedings of IEEE Applied Power Electronics Conference and Exposition, 2016.
[13]	Li S, Lee A T L, Tan S C, et al. Plug-and-play voltage ripple mitigator for DC links in hybrid AC-DC power grids with local bus-voltage control[J]. IEEE Transactions on Industrial Electronics, 2018, 65(1):687-698. doi: 10.1109/TIE.2017.2708030
[14]	Tian H, Li Y W. Virtual resistor based harmonic sharing of DC active power filter in hybrid AC-DC microgrid[C]. Shenzhen: Proceedings of the 2018 IEEE International Power Electronics and Application Conference and Exposition, 2018.
[15]	郭振, 乐全明, 郭力, 等. 交直流混合微电网中直流母线电压纹波抑制方法[J]. 电网技术, 2017, 41(9):2896-2904.
	Guo Zhen, Yue Quanming, Guo Li, et al. Control method of DC bus voltage ripple mitigation in hybrid AC/DC microgrids[J]. Power System Technology, 2017, 41(9):2896-2904.
[16]	郭振. 交直流微电网控制策略和直流母线电压纹波治理方法研究[D]. 天津: 天津大学, 2018.
	Guo Zhen. A research of control strategy for AC/DC microgrids and suppression method for DC bus voltage oscillation[D]. Tianjin: Tianjin University, 2018.
[17]	Ahmadi R, Paschedag D, Ferdowsi M. Closed-loop input and output impedances of DC-DC switching converters operating in voltage and current mode control[C]. Glendale: Proceedings of IECON the Thirty-sixth Annual Conference on IEEE Industrial Electronics Society, 2010.
[18]	李霞林, 郭力, 冯一彬, 等. 基于非线性干扰观测器的直流微电网母线电压控制[J]. 中国电机工程学报, 2016, 36(2):350-359.
	Li Xialin, Guo Li, Feng Yibin, et al. A nonlinear disturbance observer based DC bus voltage control for a DC microgrid[J]. Proceedings of the CSEE, 2016, 36(2):350-359.
[19]	周小平, 罗安, 陈燕东, 等. 直流微电网中双向储能变换器的二次纹波电流抑制与不均衡控制策略[J]. 电网技术, 2016, 40(9):2682-2688.
	Zhou Xiaoping, Luo An, Chen Yandong, et al. Secondary ripple current suppression and imbalance control strategy in bidirectional storage converter of DC microgrid[J]. Power System Technology, 2016, 40(9):2682-2688.
[20]	李国军, 曹瀚元. 风电直流微网的短路故障与保护策略研究[J]. 电子设计工程, 2019, 27(17):23-27.
	Li Guojun, Cao Hanyuan. Research on short circuit fault and protection strategy of wind power DC microgrid[J]. Electronic Design Engineering, 2019, 27(17):23-27.

设备名称	参数名称	取值
双向DC/AC	直流母线电压u_dc	700 V
	开关频率f₁	5kHz
	直流母线侧电容C	2 200 μF
负荷	直流电阻性负荷R_dc	30 Ω
DC-APF	滤波电感L	2 mH
	储能电容C_s	2 200 μF
	储能电容电压u_s	450 V
	开关频率f₂	20 kHz

设备名称	参数名称	取值
双向DC/AC	直流母线电压u_dc	200 V
	开关频率f₁	5 kHz
	直流母线侧电容C	2 000 μF
负荷	直流电阻性负荷R_dc	30 Ω
DC-APF	滤波电感L	2 mH
	储能电容C_s	2 000 μF
	储能电容电压u_s	100 V
	开关频率f₂	20 kHz

Centralized Compensation Self-Optimization Strategy of Bus Voltage Ripple in DC Microgrid

RichHTML

PDF (PC)

Like

Knowledge

Abstract

Cite this article

share this article

Figures/Tables 12

References 20

Related Articles 8

Metrics

Comments

Recommended 10

[1]	WANG Xin,XU Xiang,WU Boning,HUANG Chong. Research on Robust Feedforward Control Strategy of Bidirectional AC/DC Converter for DC Microgrid [J]. Electronic Science and Technology, 2022, 35(6): 64-69.
[2]	WANG Yumei,ZHANG Zihan,WANG Hao. Large-Disturbance Stability Analysis of DC Microgrid Based on Mixed Potential Function [J]. Electronic Science and Technology, 2022, 35(1): 66-72.
[3]	CHEN Yuan,CAI Wenyu,HU Biwei. Underwater Sensor Node Design of Micro Underwater Acoustic Sensor Network [J]. Electronic Science and Technology, 2019, 32(7): 71-75.
[4]	ZHANG Jing,YIN Zhiping,YANG Jun. Design of Substrate Integrated Waveguide Bandpass Filters for Ku Band [J]. , 2015, 28(9): 57-.
[5]	GE Shuai. Hybrid Active Power Filter DC Bus Control Based on Dual Fuzzy Control [J]. , 2013, 26(6): 25-.
[6]	TANG Panlei,WANG Jiandong,SONG Jiaxing. Research on the Band-pass Filter Using Double Ridge Irises [J]. , 2013, 26(10): 110-.
[7]	YUAN Yu-Xian, SUN Guo-Quan, ZHONG Xian-Feng. Design of Microstrip Hairpin Bandpass Filter [J]. , 2012, 25(12): 46-.
[8]	WANG Yong, CAI Fei, LV Guo-Qiang. Design of a Filter with Spurious PassBand Suppression Configuration [J]. , 2010, 23(9): 24-.