Technical Papers

Low Temperature Rise under Heavy Current

• “Comparative Evaluation and Analysis of the 2008 Toyota Lexus, Camry and 2004 Prius DC Link Capacitor Assembly vs. the SBE Power Ring DC Link Capacitor”. Presented at VPPC 2009.
  Presentation (pdf link)
  Paper (pdf link)  
• “A fully integrated 3 phase IGBT switching assembly with a very low loss DC Link Capacitor” (pdf link). Presented at VPPC 2009 
• “Eddy Current Effects in Film Capacitors and their Impact on Interconnect Systems in High Power Applications” (pdf link)
  Presented at the Motor, Drive & Automation Systems Conference 2009
  SBE summary of Power Ring research being conducted under our DoE SBIR and description of numerous interconnect options for efficient use 
• “New Inverter Layout and DC Link Capacitor Integration for Increased System Density and Performance”
  Presented at the IECON’08 – 34th Annual Conference of the IEEE Industrial Electronics Society.
  Technical Paper (pdf link)
  Presentation (pdf link)
  Discussion on the increased inverter efficiency which can be obtained by integrating the inverter switches and the DC Link capacitor into an optimized module. 
• “Reliability Considerations of Inverter/DC Link Capacitor Using PP Film and 105°C Engine Coolant”
  Presented at the IMAPS 2008 – 41st International Symposium on Microelectronics.
  Technical Paper (pdf link)
  Presentation (pdf link)
  Discussion on the possible reliability improvements using the SBE Power Ring in an Automotive Inverter application. 
• High Temperature, High Ripple Current DC Bus Film Capacitors (pdf link)
  Presentation from 2008 Motor, Drive & Automation Systems Conference analyzing R&D data on testing of high crystalline structure polypropylene film. 
• Status Report and Technology Overview of Leading Edge Development In the field of Increased Power Density Inverter Technology and the use of 105°C Engine Coolant for the DC Link Capacitor (pdf link)
  SBE has developed an innovative new annular capacitor technology which when combined with integration of inverter semiconductors should provide the path to a significantly increased power density inverter capable of operating using the available HEV/PHEV 105°C engine coolant for both semiconductors and capacitors at similar or less expensive costs than today’s technology. 
• Thermal Considerations Regarding the Use of the Power Ring in High Ripple Current Applications (pdf link)
  Presentation from Motor & Drive Systems 2007; an overview of temperature rise, bus interconnect considerations, and the Power Ring’s ability to handle extreme operating conditions. 
• Power Ring Performance vs. conventional array (pdf link)
  How does a single Power Ring “stack-up” against an array of discrete film capacitor units? Presented at SAE Convergence 2006. 
• Power Ring for embedded e-drive applications (pdf link)
  Presentation from Motor & Drive Systems 2006 regarding implementation of Power Ring with circular inverter design.

Extreme Pulse Current Survival – High Frequency and Severe Magnitude Wave Shapes

• “Stacking the Power Ring for High Voltage and High Current Applications”
  From the 2007 IEEE Pulsed Power Conference.
  Technical Paper (pdf link)
  Presentation (pdf link) providing the details of the testing and design aspects in support of the above technical paper and an overview of the Power Ring stack, details on voltage grading, modularity advantages, and technical findings of the interconnect system used in the stack assembly. 
• Power Ring Optimized for Short Pulse Power (pdf link)
  Technical poster presented at IEEE Power Modulator Conference 2006, comparing test data of SBE’s patented pulse film technology and traditional metallized polypropylene film. In addition reliability data was presented from a 1,000,000 discharge test at 10,000 Amps. 
• Technical Paper: Annular Form Factor Film Capacitors (pdf link)
  Presented at the 2005 Pulsed Power Conference; reports on design, testing criteria, and results. 
• Technical Paper: An Extremely Low ESR and ESL Annular Film Capacitor (pdf link)
  Presented at PowerSystems World 2005; detailing use of the Power Ring in large switching power systems.

Industry Leading ESR/ESL Characteristics

• “Eddy Current Effects in Film Capacitors and their Impact on Interconnect Systems in High Power Applications”
  Presented at the Motor, Drive & Automation Systems Conference 2009 Presentation (pdf link)
  SBE summary of Power Ring research being conducted under our DoE SBIR and description of numerous interconnect options for efficient use. 
• “Stacking the Power Ring for High Voltage and High Current Applications”
  From the 2007 IEEE Pulsed Power Conference.
  Technical Paper (pdf link)
  Presentation (pdf link) providing the details of the testing and design aspects in support of the above technical paper and an overview of the Power Ring stack, details on voltage grading, modularity advantages, and technical findings of the interconnect system used in the stack assembly. 
• Technical Paper: Annular Form Factor Film Capacitors (pdf link)
  Presented at the 2005 Pulsed Power Conference; reports on design, testing criteria, and results. 
• Technical Paper: An Extremely Low ESR and ESL Annular Film Capacitor (pdf link)
  Presented at PowerSystems World 2005; detailing use of the Power Ring in large switching power systems. 

Significant Capacitance Density

• Power Ring for embedded e-drive applications (pdf link)
  Presentation from Motor & Drive Systems 2006 regarding implementation of Power Ring with circular inverter design. 
• “Stacking the Power Ring for High Voltage and High Current Applications”
  From the 2007 IEEE Pulsed Power Conference.
  Technical Paper (pdf link)
  Presentation (pdf link) providing the details of the testing and design aspects in support of the above technical paper and an overview of the Power Ring stack, details on voltage grading, modularity advantages, and technical findings of the interconnect system used in the stack assembly.