TY - GEN
T1 - Numerical analysis of various space charge packet behaviors in low-density polyethylene under different high DC voltage
AU - Xia, Junfeng
AU - Zhang, Yewen
AU - Zheng, Feihu
AU - Lei, Qingquan
PY - 2009
Y1 - 2009
N2 - The generation and migration of space charge packets in low-density polyethylene (LDPE) materials have been investigated in recent papers. A large number of measuring results indicate that space charge behavior show great difference in the course of formation and movement due to the difference of applied field and material characteristic. This gives difficulties to study the feature of packet-like charge behavior in LDPE. In order to give a reasonable explanation for various kinds of packet-like charge behaviors, a simple numerical simulation is proposed which is based on the analysis of experimental results. The model is considered the influence of the electrode injection and carrier velocity as well as trap level caused by the electric field distortion. Based on the idea that the hole mobility will be expected to decrease as the increasing field causes more disorganization of polyethylene chains, we give a hypothesis that a negative differential mobility curve could be utilized to describe the relation between the migration velocity and electric field. By considering such a model, we simulated various kinds of packet-like charge behaviors and the results of simulation show a good agreement with the experimental results from different groups.
AB - The generation and migration of space charge packets in low-density polyethylene (LDPE) materials have been investigated in recent papers. A large number of measuring results indicate that space charge behavior show great difference in the course of formation and movement due to the difference of applied field and material characteristic. This gives difficulties to study the feature of packet-like charge behavior in LDPE. In order to give a reasonable explanation for various kinds of packet-like charge behaviors, a simple numerical simulation is proposed which is based on the analysis of experimental results. The model is considered the influence of the electrode injection and carrier velocity as well as trap level caused by the electric field distortion. Based on the idea that the hole mobility will be expected to decrease as the increasing field causes more disorganization of polyethylene chains, we give a hypothesis that a negative differential mobility curve could be utilized to describe the relation between the migration velocity and electric field. By considering such a model, we simulated various kinds of packet-like charge behaviors and the results of simulation show a good agreement with the experimental results from different groups.
KW - Negative differential mobility
KW - Numerical simulation
KW - Packet-like charge
UR - https://www.scopus.com/pages/publications/71049152939
U2 - 10.1109/ICPADM.2009.5252232
DO - 10.1109/ICPADM.2009.5252232
M3 - 会议稿件
AN - SCOPUS:71049152939
SN - 9781424443680
T3 - Proceedings of the IEEE International Conference on Properties and Applications of Dielectric Materials
SP - 875
EP - 878
BT - 2009 IEEE 9th International Conference on the Properties and Applications of Dielectric Materials, ICPADM 2009
T2 - 2009 IEEE 9th International Conference on the Properties and Applications of Dielectric Materials, ICPADM 2009
Y2 - 19 July 2009 through 23 July 2009
ER -