Large-Signal Stability of On-board DC Microgrids for Hybrid Electric Armored Vehicles

doi:10.12382/bgxb.2022.0472

Abstract

Abstract:

The power quality and stability of an on-board DC microgrid are related to whether the electrical equipment in the vehicle can work safely and reliably. Aiming at the problem of bus voltage oscillation and instability of on-board DC microgrids under large disturbances, a large-disturbance model of an on-board DC microgrid that considers constant power load and engine-generator is established. Based on the mixed potential theory, the stability criterion of the on-board microgrid is obtained, solving the problem that existing large-disturbance analysis methods are not suitable for on-board microgrids. The influence of important parameters on the response speed and stability of the microgrid are also analyzed. Finally, the stability criterion and the accuracy of the analysis results are verified by hardware-in-the-loop simulation and bench experiments. The results show that the system satisfying the criterion can operate stably under large disturbances.

Key words: hybrid electric vehicle, DC microgrid, mixed potential theory, stability analysis

CLC Number:

TJ810.2

XU Haoxuan, MA Xiaojun, LIU Chunguang. Large-Signal Stability of On-board DC Microgrids for Hybrid Electric Armored Vehicles[J]. Acta Armamentarii, 2023, 44(1): 108-116.

Figures/Tables 11

Fig.1 Topology of an on-board microgrid

Fig.2 Equivalent power model of the generator set

Fig.3 Simplified model of an on-board microgrid

Fig.4 Hardware-in-the-loop simulation platform

Table 1 Design parameters of the microgrid

参数	数值
机组额定转速/(r·min^-1)	2100
机组额定功率/kW	280
超级电容额定电压/V	750
超级电容额定容量/F	3
蓄电池电压/A	680
蓄电池最大输出功率/kW	190
等效电阻R₀/Ω	0.004
等效电感L/H	0.875
控制器参数K_i	20
控制器参数K_p	30
发动机外特性比例系数K	10
母线额定电压/V	750

Fig.5 Voltage and speed trajectory during system loading using Table 1 parameters

Fig.6 Voltage and speed trajectory during system loading test under Condition 2

Fig.7 Change of Kii/ K p i 2 with Kp and Ki

Fig.8 Voltage trajectory during system loading under different capacitances

Table 2 Design parameters of bench test

参数组	超级电容/F	K_p	K_i	U_d	稳定性
第3组	3	30	20	不限幅	不稳定
第4组	6	15	30	不限幅	稳定
第5组	3	30	20	限幅	稳定

Fig.9 Bus voltage tracking trajectories of the bench test

References 27

[1]	李嘉麒, 魏曙光, 廖自力, 等. 陆战平台全电化关键技术发展综述[J]. 兵工学报, 2021, 42(10): 2049-2059. doi: 10.3969/j.issn.1000-1093.2021.10.001
	LI J Q, WEI S G, LIAO Z L, et al. Review on the key technologies and development of all-electric land warfare platform[J]. Acta Armamentarii, 2021, 42(10):2049-2059. (in Chinese) doi: 10.3969/j.issn.1000-1093.2021.10.001
[2]	ZHANG X, MI C. Vehicle power management[M]. London: Springer, 2011.
[3]	马晓军, 袁东, 项宇, 等. 陆战平台综合电力系统及其关键技术研究[J]. 兵工学报, 2017, 38(2):396-406. doi: 10.3969/j.issn.1000-1093.2017.02.026
	MA X J, YUAN D, XIANG Y, et al. Research on integrated power system and its key techniques of ground combat platform[J]. Acta Armamentarii, 2017, 38(2):396-406. (in Chinese)
[4]	孙逢春, 张承宁. 装甲车辆混合动力电传动技术[M]. 北京: 国防工业出版社, 2008.
	SUN F C, ZHANG C N. Hybrid electric drive technology for armored vehicles[M]. Beijing: National Defense Industry Press, 2008. (in Chinese)
[5]	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 X L, GUO L, WANG C S, et al. Key technologies of DC microgrids: an overview[J]. Proceedings of the CSEE, 2016, 36(1):2-17. (in Chinese)
[6]	林程, 孙建侠, 徐垚, 等. 电动汽车驱动系统直流母线稳定性分析[J]. 汽车工程, 2022, 44(4):583-590.
	LIN C, SUN J X, XU Y, et al. Stability analysis of DC bus of electric vehicle drive system[J]. Automotive Engineering, 2022, 44(4): 583-590. (in Chinese)
[7]	VESITI S, SUNTIO T, OLIVER J A, et al. Impedance-based stability and transient-performance assessment applying maximum peak criteria[J]. IEEE Transactions on Power Electronics, 2013, 28(5):2099-2104. doi: 10.1109/TPEL.2012.2220157 URL
[8]	付媛, 邵馨玉, 赵欣艳, 等. 基于附加电量的直流微电网动态稳定控制策略[J]. 电力自动化设备, 2021, 41(5):136-144,159.
	FU Y, SHAO X Y, ZHAO X Y, et al. Dynamic stability control strategy of DC microgrid based on additional electric quantity[J]. Electric Power Automation Equipment, 2021, 41(5):136-144,159. (in Chinese)
[9]	KABALAN M, SINGH P, NIEBUR D. Large signal Lyapunov-based stability studies in microgrids: a review[J]. IEEE Transactions on Smart Grid, 2017, 8(5):2287-2295. doi: 10.1109/TSG.2016.2521652 URL
[10]	XIE W Q, HAN M X, CAO W Y, et al. System-level large-signal stability analysis of droop-controlled DC microgrids[J]. IEEE Transactions on Power Electronics, 2020,(99):1-1.
[11]	GRIFFO A, WANG J B. Large signal stability analysis of “more electric” aircraft power systems with constant power loads[J]. IEEE Transactions on Aerospace and Electronic Systems, 2012, 48(1): 477-489. doi: 10.1109/TAES.2012.6129649 URL
[12]	高强, 袁东, 刘春光, 等. 车载综合电力系统大信号失稳预测[J]. 兵器装备工程学报, 2020, 41(12):143-148.
	GAO Q, YUAN D, LIU C G, et al. Large-signal instability prediction of vehicular integrated power system[J]. Journal of Ordnance Equipment Engineering, 2020, 41(12):143-148. (in Chinese)
[13]	JIANG J B, LIU F, PAN S, et al. A conservatism-free large signal stability analysis method for DC microgrid based on mixed potential theory[J]. IEEE Transactions on Power Electronics, 2019, 33(11):1342-11351.
[14]	ZHAO W Z, ZHENG J H, HAN Z H, et al. Large-disturbance stability analysis method based on mixed potential function for AC/DC hybrid distribution network with PET[J]. IET Generation Transmission & Distribution, 2020, 14(18):3802-3813. doi: 10.1049/iet-gtd.2019.1700 URL
[15]	厉泽坤, 孔力, 裴玮. 直流微电网大扰动稳定判据及关键因素分析[J]. 高电压技术, 2019, 45(12):3993-4002.
	LI Z K, KONG L, PEI W. Analyses of stability criterion and key factors of DC microgrid under large disturbance[J]. High Voltage Engineering, 2019, 45(12):3993-4002. (in Chinese)
[16]	厉泽坤, 孔力, 裴玮, 等. 基于混合势函数的下垂控制直流微电网大扰动稳定性分析[J]. 电网技术, 2018, 42(11):3725-3734.
	LI Z K, KONG L, PEI W, et al. Large- disturbance stability analysis of droop-controlled dc microgrid based on mixed potential function[J]. Power System Technology, 2018, 42(11):3725-3734. (in Chinese)
[17]	刘海涛, 熊雄, 徐旖旎, 等. 含恒功率负载的直流微网稳定性分析[J]. 电力系统及其自动化学报, 2022, 34(5):42-49.
	LIU H T, XIONG X, XU Y N, et al. Stability analysis of DC microgrid with constant power load[J]. Proceedings of the CSU-EPSA, 2022, 34(5):42-49. (in Chinese)
[18]	KIM H J, KANG S W, SEO G S. Large-signal stability analysis of DC power system with shunt active damper[J]. IEEE Transactions on Industrial Electronics, 2016, 63(10): 6270-6280. doi: 10.1109/TIE.2016.2581150 URL
[19]	滕昌鹏, 王玉斌, 周博恺, 等. 含恒功率负载的直流微网大信号稳定性分析[J]. 电工技术学报, 2019, 34(5):973-982.
	TENG C P, WANG Y B, ZHOU B K, et al. Large-signal stability analysis of DC microgrid with constant power loads[J]. Transactions of China Electrotechnical Society, 2019, 34(5):973-982. (in Chinese)
[20]	AHMADI H, KAZEMI A. The islanded micro-grid large signal stability analysis based on neuro-fuzzy model[J]. International Transactions on Electrical Energy Systems, 2020, 30(8):e12449.
[21]	LIU X B, SUN X X. Large signal stability analysis of hybrid AC/DC microgrid based on T-S fuzzy model method[C]//Proceedings of the 2019 22nd International Conference on Electrical Machines and System. Harbin, China: IEEE, 2019:1-6.
[22]	HUANG T, GAO S C, XIE L. A neural Lyapunov approach to transient stability assessment of power electronics-interfaced networked microgrids[J]. IEEE transactions on Smart Grid, 2022, 13(1):106-118. doi: 10.1109/TSG.2021.3117889 URL
[23]	EMADI A, KHALIGH A, RIVETTA C, et al. Constant power loads and negative impedance instability in automotive systems: definition, modeling, stability, and control of power electronic converters and motor drives[J]. IEEE Transactions on Vehicular Technology, 2006, 55(4): 1112-1125. doi: 10.1109/TVT.2006.877483 URL
[24]	RAHIMI A M, EMADI A. An analytical investigation of DC/DC power electronic converters with constant power loads in vehicular power systems[J]. IEEE Transactions on Vehicular Technology, 2009, 58(6):2689-2702. doi: 10.1109/TVT.2008.2010516 URL
[25]	LASLEY E L, MICHEL A N. Input-output stability of interconnected system[J]. IEEE Transactions on Automatic Control, 1976, 21(1):84-89. doi: 10.1109/TAC.1976.1101140 URL
[26]	KOTRA S, MISHRA M. Design and stability analysis of DC microgrid with hybrid energy storage system[J]. IEEE Transactions on Sustainable Energy, 2019, 10(3):1603-1612. doi: 10.1109/TSTE.2019.2891255 URL
[27]	侯珏. 增程式电动汽车预测型能量管理策略研究[D]. 杭州: 浙江大学, 2022.
	HOU J. Research on the predictive energy management strategy of range extended electric vehicles[D]. Hangzhou: Zhejiang University, 2022. (in Chinese)