Title page for etd-0626117-123336


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URN etd-0626117-123336
Author Jui-Yi Wang
Author's Email Address No Public.
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Department Electrical Engineering
Year 2016
Semester 2
Degree Master
Type of Document
Language zh-TW.Big5 Chinese
Title Output voltage regulation with balanced discharge control of multiple battery modules in series connection
Date of Defense 2017-07-03
Page Count 90
Keyword
  • boost converter
  • battery power modules
  • balanced discharge
  • output voltage regulation
  • linear quadratic regulator
  • Abstract In this thesis, we consider the control design problem of output voltage regulation with balanced discharge for a boost converter with battery power modules (BPMs) in output series connection. One of the advantages of the output series connection is that such circuits are able to provide a higher collective output voltage, while at the same time each battery modules can be regulated to discharge independently.
    In this thesis, we first apply the state-space averaging approach to establish a nonlinear average dynamical model. Furthermore, we linearize the model around a given operating point to derive a linear time invariant approximation for the nonlinear model. Linear Quadratic Regulation (LQR) approach is then applied to design a robust output voltage regulator based on an integral weighting function. Lastly, to achieve balanced discharge, an additional feedback mechanism for each BPM is introduced. The mechanism is linear feedback based on the difference between the voltage of the individual module and the average voltage among the modules. The effectiveness of our design is verified by numerical simulations using the software package MATLAB. The results of our numerical experiments indicate that our design is robust against load variation, and the controller is indeed able to regulate the output voltage to a given desired value while maintaining balanced discharge among the BPMs.
    Advisory Committee
  • Chih-Chiang Cheng - chair
  • Shiang-Hwua Yu - co-chair
  • Keng-Hao Liu - co-chair
  • Chung-Yao Kao - advisor
  • Files
  • etd-0626117-123336.pdf
  • Indicate in-campus at 5 year and off-campus access at 5 year.
    Date of Submission 2017-07-27

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