Variable-Speed-Drive Insulation
Abstract
The University of Connecticut (UConn), in partnership with Naval Research Laboratory, pro-poses to develop a new insulation for Vari,able Speed Drive (VSD) applications. VSD enabled by Pulse-Width-Modulation (PWM) inverters with ultrafast power semiconductor switch,es of-fers significantly enhanced power density and payload efficiency for US NAVY?s Integrated Power System, but posts also higher,electrical and thermal stresses to the insulation systems. In particular, VSD generated pulses with ultrafast dV/dt at high repetiti,on rates raise the concerns of fast aging of insulation due to partial discharge (PD). UConn has been developing nanocoatings over d,ielectric substrates for charge injection block-ing and anisotropic energy dissipation. Early lab studies reveal a significant parti,al discharge suppression and time to failure elongation, along with a clear shifting of the dominant conduc-tion mode from the bulk-,limited hopping to Schottky-injection limited conduction. These led to significantly enhanced dielectrics properties of high-perform,ance polymer insulation at elevat-ed temperatures up to 200oC. The proposed work aims to develop discharge resistant Type-I motor/in,sulation for VSD over a broad range of dual-use applications.Approved for Public Release
Document Details
- Document Type
- DoD Grant Award
- Publication Date
- Dec 06, 2022
- Source ID
- N000142312062
Entities
People
- Yang Cao
Organizations
- Office of Naval Research
- United States Navy
- University of Connecticut