电动汽车高压系统绝缘状态在线监测方法
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摘要
为了提高电驱动系统的高压安全性,设计适用于电驱动系统的在线绝缘电阻监测装置。对该装置在电驱动系统运行过程中产生共模干扰的原因进行分析,并提出能够在线提取绝缘电压特征量的连续零矢量状态绝缘电阻检测法,解决在电驱动系统运行过程中受到电磁干扰而无法进行绝缘监测的问题,实现在静态和动态两种情况下高压系统与车体之间绝缘性能的监测。通过实验验证了该方法的抗干扰能力且具有较高的检测准确度,对于保证电驱动系统的高压安全起到了重要作用。
For the high voltage safety of electric drive system, an online insulation detection device is designed in this paper. Based on the influence analysis of common mode interference during the electric drive system operation, a continuous zero-vector insulation resistance detection method is proposed to extract insulation voltage online to solve the problem that the traditional insulation resistance detection method fails to monitor the insulation performance due to electromagnetic interference. The proposed method can implement the detection of insulation performance between the high voltage circuit and the car body in static and dynamic situations. The experimental results demonstrate that this method has anti-interference ability and high detection accuracy, which plays an important role in ensuring the high voltage safety of electric drive system.
For the high voltage safety of electric drive system, an online insulation detection device is designed in this paper. Based on the influence analysis of common mode interference during the electric drive system operation, a continuous zero-vector insulation resistance detection method is proposed to extract insulation voltage online to solve the problem that the traditional insulation resistance detection method fails to monitor the insulation performance due to electromagnetic interference. The proposed method can implement the detection of insulation performance between the high voltage circuit and the car body in static and dynamic situations. The experimental results demonstrate that this method has anti-interference ability and high detection accuracy, which plays an important role in ensuring the high voltage safety of electric drive system.
引文
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[11]王全东,常天庆,李方正,等.T型逆变器的共模干扰与共模电压抑制算法[J].电工技术学报,2016,31(23):159-168.Wang Quandong,Chang Tianqing,Li Fangzheng,et al.Common mode interference and common mode voltage suppression algorithm of T-shaped inverter[J].Transactions of China Electrotechnical Society,2016,31(23):159-168.
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[14]尹靖元,金新民,杨捷,等.开绕组电机驱动用双三电平逆变器的共模电压差抑制[J].电工技术学报,2016,31(15):178-186.Yin Jingyuan,Jin Xinmin,Yang Jie,et al.The differential common mode voltage elimination of dual three-level converter for open-end winding motor drives[J].Transactions of China Electrotechnical Society,2016,31(15):178-186.
[15]黄劲,熊蕊,王志,等.采用三相四桥臂抑制逆变器共模干扰的SPWM控制策略[J].电工技术学报,2009,24(3):110-115.Huang Jin,Xiong Rui,Wang Zhi,et al.SPWMcontrol strategy to reduce inverter common-mode interferences based on three-phase four-leg structure[J].Transactions of China Electrotechnical Society,2009,24(3):110-115.
[16]Liang Bin,Wei Kexin,Yue Youjun.Prediction of the conducted EMI in PWM converter system with parasitic parameters considered[J].Science China Technological Sciences,2012,55(10):2829-2836.
[17]郭磊磊,金楠,申永鹏.一种基于优化电压矢量选择的电压源逆变器模型预测共模电压抑制方法[J].电工技术学报,2018,33(6):1347-1355.Guo Leilei,Jin Nan,Shen Yongpeng.A mode predictive common-mode voltage suppression method for voltage source inverter based on optimum voltage vector selection[J].Transactions of China Electrotechnical Society,2018,33(6):1347-1355.
[18]郭小强,贾晓瑜.非隔离型级联H5光伏逆变器共模漏电流特性分析[J].电工技术学报,2018,33(2):361-369.Guo Xiaoqiang,Jia Xiaoyu.Analysis of common mode leakage current for transformerless cascaded H5 PV inverter[J].Transactions of China Electrotechnical Society,2018,33(2):361-369.
[19]王付胜,李祯,付航,等.一种抑制系统漏电流非隔离型三电平逆变器中点平衡载波调制算[J].电工技术学报,2017,32(2):128-138.Wang Fusheng,Li Zhen,Fu Hang,et al.A new pulse-point balancing and leakage current reducing in the three-level transformerless inverter[J].Transactions of China Electrotechnical Society,2017,32(2):128-138.
[2]黎林,姜久春.电动汽车电池组绝缘检测方法的研究[J].电子测量技术,2009,32(2):76-78.Li Lin,Jiang Jiuchun.Research on battery insulation detection for electric vehicle[J].Electronic Measurement Technology,2009,32(2):76-78.
[3]李景新,樊彦强,姜久春,等.电动汽车绝缘电阻在线监测方法[J].汽车工程,2006,28(10):884-887.Li Jingxin,Fan Yanqiang,Jiang Jiuchun,et al.An approach to on-line monitoring on insulation resistance in electric vehicle[J].Automotive Engineering,2006,28(10):884-887.
[4]Baldwin T,Renovich F,Saunders L F.Directional ground-fault indicator for high-resistance grounded systems[J].IEEE Transactions on Industry Applications,2003,39(2):325-332.
[5]Li Jingxin,Wu Zhiqiang,Fan Yanqiang,et al.Research on insulation resistance on-line monitoring for electric vehicle[C]//Proceedings of the Eighth International Conference on Electrical Machines and Systems,Nanjing,China,2005:814-817.
[6]Rüdiger Appunn,Kay Hameyer.Simulation of a high voltage system in a hybrid electrical vehicle[C]//12th International Conference on Optimization of Electrical and Electronic Equipment,Basov,Komania,2010:315-320.
[7]郭宏榆,姜久春,温家鹏,等.电动汽车绝缘电阻有源检测系统[J].电子测量与仪器学报,2011,25(3):253-257.Guo Hongyu,Jiang Jiuchun,Wen Jiapeng,et al.New method of insulation detection for electrical vehicle[J].Journal of Electric Measurement and Instrument,2011,25(3):253-257.
[8]周晨,胡社教,沙伟,等.电动汽车绝缘电阻有源检测系统[J].电子测量与仪器学报,2013,27(5):409-414.Zhou Chen,Hu Shejiao,Sha Wei,et al.Active detection system of insulation resistance in electric vehicle[J].Journal of Electric Measurement and Instrument,2013,27(5):409-414.
[9]胡存刚,胡军,陈权,等.基于特定谐波消除PWM的三电平有源中点钳位逆变器共模电压抑制方法[J].电工技术学报,2016,31(16):93-102.Hu Cungang,Hu Jun,Chen Quan,et al.Suppression method of common-mode voltage for three-level active neutral-point-clamped inverter based on selective harmonics elimination PWM[J].Transactions of China Electrotechnical Society,201631(16):93-102.
[10]周娟,魏琛,杨宇,等.逆变器简化PWM算法及抑制共模电压策略[J].电工技术学报,2014,29(8):158-165.Zhou Juan,Wei Chen,Yang Yu,et al.Inverter simplified algorithm of PWM and inhibit commonmode voltage strategy[J].Transactions of China Electrotechnical Society,2014,29(8):158-165.
[11]王全东,常天庆,李方正,等.T型逆变器的共模干扰与共模电压抑制算法[J].电工技术学报,2016,31(23):159-168.Wang Quandong,Chang Tianqing,Li Fangzheng,et al.Common mode interference and common mode voltage suppression algorithm of T-shaped inverter[J].Transactions of China Electrotechnical Society,2016,31(23):159-168.
[12]袁佳歆,潘建兵,饶斌斌,等.三相逆变器的最小共模电压PWM控制[J].电工技术学报,2012,27(8):42-48.Yuan Jiaxin,Pan Jianbing,Rao Binbin,et al.Research on minimum common-mode voltage PWMcontrol strategy for three-phase inverters[J].Transactions of China Electrotechnical Society,2012,27(8):42-48.
[13]孟进,马伟明,张磊,等.考虑PWM调制策略的逆变器共模和差模干扰源模型[J].电工技术学报,2007,22(12):91-97.Meng Jin,Ma Weiming,Zhang Lei,et al.DM and CM EMI sources modeling for inverters considering the PWM strategies[J].Transactions of China Electrotechnical Society,2007,22(12):91-97.
[14]尹靖元,金新民,杨捷,等.开绕组电机驱动用双三电平逆变器的共模电压差抑制[J].电工技术学报,2016,31(15):178-186.Yin Jingyuan,Jin Xinmin,Yang Jie,et al.The differential common mode voltage elimination of dual three-level converter for open-end winding motor drives[J].Transactions of China Electrotechnical Society,2016,31(15):178-186.
[15]黄劲,熊蕊,王志,等.采用三相四桥臂抑制逆变器共模干扰的SPWM控制策略[J].电工技术学报,2009,24(3):110-115.Huang Jin,Xiong Rui,Wang Zhi,et al.SPWMcontrol strategy to reduce inverter common-mode interferences based on three-phase four-leg structure[J].Transactions of China Electrotechnical Society,2009,24(3):110-115.
[16]Liang Bin,Wei Kexin,Yue Youjun.Prediction of the conducted EMI in PWM converter system with parasitic parameters considered[J].Science China Technological Sciences,2012,55(10):2829-2836.
[17]郭磊磊,金楠,申永鹏.一种基于优化电压矢量选择的电压源逆变器模型预测共模电压抑制方法[J].电工技术学报,2018,33(6):1347-1355.Guo Leilei,Jin Nan,Shen Yongpeng.A mode predictive common-mode voltage suppression method for voltage source inverter based on optimum voltage vector selection[J].Transactions of China Electrotechnical Society,2018,33(6):1347-1355.
[18]郭小强,贾晓瑜.非隔离型级联H5光伏逆变器共模漏电流特性分析[J].电工技术学报,2018,33(2):361-369.Guo Xiaoqiang,Jia Xiaoyu.Analysis of common mode leakage current for transformerless cascaded H5 PV inverter[J].Transactions of China Electrotechnical Society,2018,33(2):361-369.
[19]王付胜,李祯,付航,等.一种抑制系统漏电流非隔离型三电平逆变器中点平衡载波调制算[J].电工技术学报,2017,32(2):128-138.Wang Fusheng,Li Zhen,Fu Hang,et al.A new pulse-point balancing and leakage current reducing in the three-level transformerless inverter[J].Transactions of China Electrotechnical Society,2017,32(2):128-138.