Insulation reliability issues in high frequency/transient environments of next generation high power electronics

As the automobile industry develops zero-emission vehicles and bring them to market by the 1998 deadline in California Massachusetts and New York, a potential EV (electric vehicle) safety and reliability engineering issue exists. High-voltage, high-frequency transients and related waveforms that are part of powering EV traction motors may damage the insulating materials in wiring harnesses, interfaces and connectors. Polypropylene films, 9 /spl mu/m thick, representative of typical wire and connector bulk insulation, were placed between a rod-plane electrode set and subjected to high-voltage pulses until breakdown occurred for voltages sufficiently elevated that significant corona activity was in evidence. The effect of voltage magnitude and pulse repetition rate (rep-rate) on the number of pulses the films were able to survive was recorded. Standard statistical techniques for life testing were employed along with several novel modifications developed for this work, in the data analysis. In this study, it was found that the voltage dependence followed nearly that seen for intense corona DC and AC voltage applications, while the higher rep-rate permitted a greater pulse life than did lower rep-rates. Conclusions regarding aging rates of insulation systems under intense corona activity are presented along with recommended engineering practices to obviate the observed very high aging rates of such systems.

[1]  J. Pethica,et al.  Space charge injection in polymers: New experimental results , 1985, Conference on Electrical Insulation & Dielectric Phenomena - Annual Report 1985.

[2]  Murray Goldman.  THE VOICE OF MODERN TRIALS. Volume I. Melvin M. Belli. Indianapolis-New York: Bobbs-Merrill Company, Inc., 1959. 3 records. , 1960 .

[3]  B. Townsend.  Electricity as a business resource , 1991 .

[4]  J. R. Eaton,et al.  Electric Power Transmission Systems , 1983 .

[5]  E. Forster,et al.  The Search for Universal Features of Electrical Breakdown in Solids, Liquids and Gases , 1982, IEEE Transactions on Electrical Insulation.

[6]  J. Crine.  Influence of Electric Field and Low Pressure on the Activation Energy for Conduction in Polyethylene , 1982, August 16.

[7]  Javaid R Laghari.  Multifactor stress aging of electrical insulation , 1990 .

[8]  H. Fujita.  An Analysis of Mechanical Stress in Solid Dielectrics Caused by Discharges in Voids , 1987, IEEE Transactions on Electrical Insulation.

[9]  H. Wintle.  Conduction Processes in Polymers , 1983 .

[10]  J. R. Laghari,et al.  Models for insulation aging under electrical and thermal multistress , 1990 .

[11]  J. O'dwyer.  Conference on Electrical Insulation and Dielectric Phenomena the 1983 J. B. Whitehead Memorial Lecture , 1984, IEEE Transactions on Electrical Insulation.

[12]  T. Sudarshan,et al.  The Effect of Chromium Oxide Coatings on Surface Flashover of Alumina Spacers in Vacuum , 1976, IEEE Transactions on Electrical Insulation.

[13]  H. Zeller,et al.  Breakdown and Prebreakdown Phenomena in Solid Dielectrics , 1987, IEEE Transactions on Electrical Insulation.

[14]  James A. Knaur,et al.  Impulse Breakdown in PMMA under Miegavolt, Nanosecond Excitation , 1978, IEEE Transactions on Electrical Insulation.

[15]  A. von Hippel,et al.  Electric Breakdown of Solid and Liquid Insulators , 1937 .

[16]  D. C. Baird,et al.  The physics of engineering solids , 1964 .

[17]  F.W. MacDougall,et al.  THE IMPACT OF HIGH ENERGY DENSITY CAPACITORS WITH METALLIZED ELECTRODE IN LARGE CAPACITOR BANKS FOR , 1993, Ninth IEEE International Pulsed Power Conference.

[18]  P. Pfluger,et al.  A model for space charge injection in dielectrics , 1985, Conference on Electrical Insulation & Dielectric Phenomena - Annual Report 1985.

[19]  D. Shaw,et al.  A Changing Capacitor Technology - Failure Mechanisms and Design Innovations , 1981, IEEE Transactions on Electrical Insulation.

[20]  T. Sudarshan,et al.  The Effect of Cuprous Oxide Coatings on Surface Flashover of Dielectric Spacers in Vacuum , 1974, IEEE Transactions on Electrical Insulation.

[21]  R. Fowler,et al.  Electron Emission in Intense Electric Fields , 1928 .

[22]  Paul Budenstein,et al.  On the Mechanism of Dielectric Breakdown of Solids , 1980, IEEE Transactions on Electrical Insulation.

[23]  M. Kristiansen,et al.  Charging of Insulators in a surface Discharge Switch , 1986, IEEE Transactions on Electrical Insulation.

[24]  C. Zener.  A theory of the electrical breakdown of solid dielectrics , 1934 .

[25]  E. J. Gumbel,et al.  Statistics of Extremes. , 1960 .

[26]  E. Kuffel,et al.  High voltage engineering , 2006, 2006 Eleventh International Middle East Power Systems Conference.

[27]  Peter H. Fischer,et al.  The Short-Time Electric Breakdown Behavior of Polyethylene , 1974, IEEE Transactions on Electrical Insulation.

[28]  R. S. Sigmond,et al.  Corona and Insulation , 1981, IEEE Transactions on Electrical Insulation.

[29]  J. Townsend,et al.  Electricity in gases , 2022 .

[30]  R. E. Dollinger,et al.  The design and application of a novel high-speed partial discharge diagnostic system , 1988 .

[31]  J. Tanaka,et al.  A Study of the Gaseous Degradation Products of Corona-Exposed Polyethylene , 1982, IEEE Transactions on Electrical Insulation.

[32]  K. Stark,et al.  Electric Strength of Irradiated Polythene , 1955, Nature.

[33]  B. Epstein,et al.  The Theory of Extreme Values and Its Implications in the Study of the Dielectric Strength of Paper Capacitors , 1948 .

[34]  J. Giacometti,et al.  Constant current corona charging of PVF2 , 1984 .

[35]  G. Stone,et al.  Parameter Estimation for the Weibull Distribution , 1977, IEEE Transactions on Electrical Insulation.

[36]  Paavo Paloniemi,et al.  Multi-Stress Endurance Tests on High-Voltage Motor Insulations, With Equal Acceleration Of Each Stress , 1980, IEEE Transactions on Electrical Insulation.

[37]  K. Holdik,et al.  Electric Field-Induced Gas Emission from PVDF Films , 1987, IEEE Transactions on Electrical Insulation.

[38]  J. O'dwyer.  A Model for the Current-Voltage Chatacteristics of a Dielectric between Spherical Electrodes , 1987, IEEE Transactions on Electrical Insulation.

[39]  K. Fitzgerald,et al.  Superconductivity: fact vs. fancy , 1988, IEEE Spectrum.

[40]  Paavo Paloniemi.  Multi-stress endurance tests on high-voltage motor insulations, with equal acceleration of each stress , 1980 .

[41]  T. Takada,et al.  Pulsed electro-acoustic method for the measurement of volume charges in E-beam irradiated PMMA , 1985, Conference on Electrical Insulation & Dielectric Phenomena - Annual Report 1985.

[42]  J. Kuffel,et al.  High Voltage Engineering: Fundamentals , 1984 .

[43]  C. M. Cooke,et al.  Charging of Insulator Surfaces by Ionization and Transport in Gases , 1981, IEEE Transactions on Electrical Insulation.

[44]  William G Dunbar,et al.  High voltage design guide for airborne equipment , 1976 .

[45]  D. A. Dunnett.  Classical Electrodynamics , 2020, Nature.

[46]  W. Pfeiffer.  Gas Breakdown in Case of Steep-Fronted Pulses and Insulator Interfaces , 1982, IEEE Transactions on Electrical Insulation.

[47]  L. Dissado,et al.  Weibull Statistics in Dielectric Breakdown; Theoretical Basis, Applications and Implications , 1984, IEEE Transactions on Electrical Insulation.

[48]  W. J. Sarjeant,et al.  Electromechanical shock in pulse power components , 1980 .

[49]  T. C. Chapman,et al.  Surface‐charge‐limited transient currents on insulating surfaces , 1982 .

[50]  Masayuki Ieda,et al.  Dielectric Breakdown Process of Polymers , 1980, IEEE Transactions on Electrical Insulation.

[51]  Tangali S. Sudarshan,et al.  In-situ insulator surface charge measurements in dielectric bridged vacuum gaps using an electrostatic probe , 1988 .

[52]  L. Simoni,et al.  A General Approach to the Endurance of Electrical Insulation under Temperature and Voltage , 1981, IEEE Transactions on Electrical Insulation.

[53]  J. Nelson,et al.  Breakdown Strength of Solids , 1983 .

[54]  Thomas E Springer,et al.  Field Grading in Capacitor Margins , 1981 .

[55]  W. J. Sarjeant,et al.  Critical pulse power components , 1981 .

[56]  Hideo Hirose,et al.  A Method to Estimate the Lifetime of Solid Electrical Insulation , 1987, IEEE Transactions on Electrical Insulation.

[57]  M. Perlman,et al.  Vibrationally excited diatomic molecules as charge injectors during corona charging of polymer films , 1982 .

[58]  H. J. Wintle.  Electrothermal breakdown: Analytic solutions for currents and fields , 1981 .

[59]  A. M. Freudenthal,et al.  On the statistical interpretation of fatigue tests , 1953, Proceedings of the Royal Society of London. Series A. Mathematical and Physical Sciences.

[60]  C. Mayoux,et al.  Interaction of Corona with Dielectric Material Until Damage , 1982, IEEE Transactions on Electrical Insulation.

[61]  J. J. O'Dwyer,et al.  The theory of electrical conduction and breakdown in solid dielectrics , 1973 .

[62]  R. Parker.  Effect of Foil Edge Modifications and Configurational Changes on Energy Storage Capacitor Weight , 1977 .

[63]  J. K. Nelson,et al.  Evidence for the role of free volume in the high field breakdown of polymers , 1980, Conference on Electrical Insulation & Dielectric Phenomena - Annual Report 1980.

[64]  E. Forster,et al.  The Metal/Liquid Interface: the Charge Injection Process , 1984, IEEE Transactions on Electrical Insulation.

[65]  J. O'dwyer.  The role of space charge in the theory of solid-dielectric breakdown , 1983, Conference on Electrical Insulation & Dielectric Phenomena - Annual Report 1983.