基于电压注入法的电动汽车绝缘电阻在线检测
|
摘要
针对现有的绝缘电阻检测方法无法检测交流侧绝缘电阻的问题,提出一种基于注入电压法的绝缘电阻在线检测方法。该方法在建立整车系统直流侧和交流侧绝缘电阻模型的基础上,设计了绝缘电阻检测的电路。通过向整车高压系统和车辆底盘之间注入方波调制电压,分别测得方波高、低电平下采样电阻的电压,从而推导出整车系统直流侧和交流侧绝缘电阻并联值的大小。通过仿真和实验验证该方法的正确性。
In view of the problem that the existing insulation resistance detection method cannot detect AC side insulation resistance,a new online method of insulation resistance detection based on the voltage injection was put forward. On the basis of the established insulation resistance model for both AC and DC system of the vehicle,the circuit of insulation resistance detection was designed. To achieve the measurement of the insulation resistance,a square modulation voltage was injected between high voltage system and vehicle chassis,the voltage of the sampling resistance at the high and low level of the square wave was measured respectively. Simulation and experiment verify the correctness of the proposed method.
In view of the problem that the existing insulation resistance detection method cannot detect AC side insulation resistance,a new online method of insulation resistance detection based on the voltage injection was put forward. On the basis of the established insulation resistance model for both AC and DC system of the vehicle,the circuit of insulation resistance detection was designed. To achieve the measurement of the insulation resistance,a square modulation voltage was injected between high voltage system and vehicle chassis,the voltage of the sampling resistance at the high and low level of the square wave was measured respectively. Simulation and experiment verify the correctness of the proposed method.
引文
[1]成永红.电力设备绝缘检测与诊断[M].北京:中国电力出版社,2001.
[2]冯兴海,孙洪雨.直流系统几种绝缘检测方法介绍[J].电源技术应用,2007,10(6):63-69.
[3]张红军,陈长军,初德发,等.改进的直流电桥法测量直流母线的绝缘电阻[J].电源世界,2002(7):5-8.
[4]任谊,沙立民,姜雨,等.单回路直流系统绝缘电阻检测装置技术研究[J].电子测量技术,2014,37(3):10-14.
[5]王勇.船舶交流电力系统绝缘监测系统的研究[D].武汉:华中科技大学,2007.
[6]桑在中,张慧芬.用注入法实现小电流接地系统单相接地选线保护[J].电力系统自动化,1996,20(2):11-12.
[7]戴海峰,张晓龙,魏学哲,等.电动汽车高压电安全分析及防护设计[J].机电一体化,2013,19(1):53-59.
[8]吴振军,王丽芳.电动汽车智能在线绝缘检测装置研究[J].电器与能效管理技术,2009(5):20-22.
[9]孙洋,张鑫,范兴明.基于非平衡电桥法与电流传感法的电动汽车绝缘检测系统设计[J].桂林电子科技大学学报,2015,35(3):245-249.
[10]郭宏榆,姜久春,温家鹏,等.新型电动汽车绝缘检测方法研究[J].电子测量与仪器学报,2011,25(3):253-257.
[11] Cheng Y,Wei X,Dai H. Electric Vehicle High Voltage Leakage Monitoring Based on Insulation Resistance Model[J]. Chinese Journal of Automotive Engineering,2012,2(6):431-439.
[12]梁琰,李刚,陶兴华,等.多路数字绝缘电阻测试仪的设计[J].计算机测量与控制,2007,15(12):1858-1860.
[13]李志得.一种智能绝缘电阻测试仪设计[J].电测与仪表,2011,48(5):63-67.
[14]郭宏榆,姜久春,温家鹏,等.新型电动汽车绝缘检测方法研究[J].电子测量与仪器学报,2011,25(3):253-257.
[15]陈良亮,肖岚,胡文斌,等.逆变器输出电压直流分量产生原因与抑制方法[J].电力电子技术,2003,37(5):27-29.
[2]冯兴海,孙洪雨.直流系统几种绝缘检测方法介绍[J].电源技术应用,2007,10(6):63-69.
[3]张红军,陈长军,初德发,等.改进的直流电桥法测量直流母线的绝缘电阻[J].电源世界,2002(7):5-8.
[4]任谊,沙立民,姜雨,等.单回路直流系统绝缘电阻检测装置技术研究[J].电子测量技术,2014,37(3):10-14.
[5]王勇.船舶交流电力系统绝缘监测系统的研究[D].武汉:华中科技大学,2007.
[6]桑在中,张慧芬.用注入法实现小电流接地系统单相接地选线保护[J].电力系统自动化,1996,20(2):11-12.
[7]戴海峰,张晓龙,魏学哲,等.电动汽车高压电安全分析及防护设计[J].机电一体化,2013,19(1):53-59.
[8]吴振军,王丽芳.电动汽车智能在线绝缘检测装置研究[J].电器与能效管理技术,2009(5):20-22.
[9]孙洋,张鑫,范兴明.基于非平衡电桥法与电流传感法的电动汽车绝缘检测系统设计[J].桂林电子科技大学学报,2015,35(3):245-249.
[10]郭宏榆,姜久春,温家鹏,等.新型电动汽车绝缘检测方法研究[J].电子测量与仪器学报,2011,25(3):253-257.
[11] Cheng Y,Wei X,Dai H. Electric Vehicle High Voltage Leakage Monitoring Based on Insulation Resistance Model[J]. Chinese Journal of Automotive Engineering,2012,2(6):431-439.
[12]梁琰,李刚,陶兴华,等.多路数字绝缘电阻测试仪的设计[J].计算机测量与控制,2007,15(12):1858-1860.
[13]李志得.一种智能绝缘电阻测试仪设计[J].电测与仪表,2011,48(5):63-67.
[14]郭宏榆,姜久春,温家鹏,等.新型电动汽车绝缘检测方法研究[J].电子测量与仪器学报,2011,25(3):253-257.
[15]陈良亮,肖岚,胡文斌,等.逆变器输出电压直流分量产生原因与抑制方法[J].电力电子技术,2003,37(5):27-29.