Z-Source/Current Source Inverter–Topology Analysis, Comparison and Design

The objective of this research is to further reduce the cost, volume and weight of the present power electronics (PE) system in the hybrid electric vehicle (HEV) by 25%. The Toyota Camry PE system is used as the reference. The research efforts will address achieving the 2015 power electronics targets: $5/kW, 12 kW/kg, 12 kW/L. Four current-fed Z-source inverter topologies were analyzed and compared. Distinct features of the current-fed Z-source inverters were proposed and summarized. The pulse width modulation (PWM) control methods were proposed and compared. One of the current-fed Z-source inverters was selected for a simulation study and 55 kW prototype design. The feasibility of the current-fed Z-source inverter for the HEV motor drive, including boost, inverter, regeneration, and Plug in HEV charging functions was verified by simulation. A performance metrics in terms of power density (kW/L), specific power (kW/kg) and efficiency characteristics of this prototype was estimated and generated. The design barriers and key points are summarized for future optimized design tasks.

  • Record URL:
  • Corporate Authors:

    Michigan State University, East Lansing

    East Lansing, MI  United States  48824

    Oak Ridge National Laboratory


    Department of Energy

    Vehicle Technologies Program, 1000 Independence Avenue, SW
    Washington, DC  United States  20585
  • Authors:
    • Cao, Dong
    • Peng, Fang Z
  • Publication Date: 2011-6


  • English

Media Info

  • Media Type: Digital/other
  • Features: Figures; References; Tables;
  • Pagination: 89p

Subject/Index Terms

Filing Info

  • Accession Number: 01520472
  • Record Type: Publication
  • Report/Paper Numbers: ORNL/TM-2010/351
  • Contract Numbers: DE-AC05-00OR22725
  • Files: TRIS
  • Created Date: Mar 29 2014 11:15AM