Understanding and Prevention of Transient Voltages and Dielectric Breakdown in High Voltage Battery Systems
Abstract
The first is to study the voltage transients that arise, fromboth cabling as well as fuse interruption, and to evaluate transient voltage suppression techniques that can efficiently and cheaply mitigate the transients. It is proposed that simple circuit element simulations and Finite Element Magnetics (FEM) simulations be performed. Simple mathematical analysis will be used to characterize the inductance in the cables used in the proposed experimental hardware. 2D FEM analysis will be used to further model the transmission line nature of the cables used to carry current from the energy storage to the load [16,17]. Simply modeling the transmissionlines as an inductance is not enough as the transient nature of the current profile will cause current to spread unevenly in the cable, which must be accounted for in the model. The results will be fed into circuit simulation tools, either LTSPICE or Simulink~, to model the voltage transients expected. The battery will be modeled using simple RC circuit techniques. Along the same lines, fuse models will be developed using simple I2R melting calculations which drive an opening switch fit to fuse data sheet parameters.
Document Details
- Document Type
- DoD Grant Award
- Publication Date
- Aug 12, 2016
- Source ID
- N000141612453
Entities
People
- David A. Wetz
Organizations
- Office of Naval Research
- United States Navy
- University of Texas at Arlington