Docstoc

An Introduction of spss _ endnote.pptx

Document Sample
An Introduction of spss _ endnote.pptx Powered By Docstoc
					           An introduction to
A Novel Cell Equalizer Topology for Plug
      -In Hybrid Electric Vehicle
        Energy Storage System

                                Kun Zhuge
                        kzhuge@uwaterloo.ca
                 Overview
•   Significance of Cell Equalization
•   Battery Model
•   Novel Topology Analysis
•   Simulation Result
•   Conclusion
Significance of Cell Equalization
• A battery of a plug-in hybrid electric vehicle (PHEV)
  consists of a long string of cells (typically 100 cells,
  about 360V)
• Cost: 500$/KW for a typical 16KWh battery, which can
  provide about 80KM in urban area, surcharge of $5000
• Cycle life and calendar life:
   – 500 cycles of 80% the capacity
   – Expecting 6000-7000 cycles for future PHEV
• Safety:
   – Safety improvement of the system if there is continuously
     monitoring the cell current, voltage and temperature
Battery Model




                [1]. Accurate Electrical Battery Model Capable of Predicting
                Runtime and I-V Performance, Min Chen, Student Member,
                IEEE, and Gabriel A. Rinc´on-Mora, Senior Member, IEEE,
                IEEE TRANSACTIONS ON ENERGY CONVERSION, VOL. 21,
                NO. 2, JUNE 2006
Cell Equalization Topology




• Current Ieq will flow in or out of the battery through the inductor
• “Control” of the system monitors the battery voltage and responses to
  equalize the battery voltage by turning on or off the switches
Cell Equalization Topology




Optimal choice: One equalizer unit is limited to four to
five cells
   • Low cost constraint
   • Voltage margin to improve the reliability
Cell Equalization Formula
Cell Equalization Formula
Cell Equalization
Cell Equalization
             VOC estimation


Ieq: equalizing current, active only at To and interrupted after T1

   : is one at To and zero thereafter

       : is the battery pack current

   /      : are the dynamic resistances

   /      : are constants
              Conclusion
• In summary, the feasibility of the novel
  battery cell equalizer was explored
• Cell equalization does contribution to
  battery cost, battery life and cycle, and
  battery safety
                              Reference
•   [1]. Accurate Electrical Battery Model Capable of Predicting Runtime and I-V
    Performance, Min Chen, Student Member, IEEE, and Gabriel A. Rinc´on-Mora,
    Senior Member, IEEE, IEEE TRANSACTIONS ON ENERGY CONVERSION, VOL. 21,
    NO. 2, JUNE 2006
•   [2]. Feasibility Analysis of a Novel Cell Equalizer Topology for Plug-in Hybrid Electric
    Vehicle Energy-Storage System, Pablo A. Cassani, Student Member, IEEE, and
    Sheldon S. Williamson, Member, IEEE, IEEE TRANSACTIONS ON VEHICULAR
    TECHNOLOGY, VOL. 58, NO. 8, OCTOBER 2009
•   [3]. Design, Testing, and Validation of a Simplified Control Scheme for a Novel Plug-
    In Hybrid Electric Vehicle Battery Cell Equalizer, Pablo A. Cassani, Student Member,
    IEEE, and Sheldon S. Williamson, Member, IEEE, IEEE TRANSACTIONS ON
    INDUSTRIAL ELECTRONICS, VOL. 57, NO. 12, DECEMBER 2010
Thanks!
 Q&A

				
DOCUMENT INFO
Shared By:
Categories:
Tags:
Stats:
views:29
posted:12/15/2013
language:Latin
pages:16