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Steady-State Analysis of PWM Z-Bridge Source DC-DC Converter

Kathi, Lokesh
http://rave.ohiolink.edu/etdc/view?acc_num=wright1453223069

Abstract Details

2015, Master of Science in Electrical Engineering (MSEE), Wright State University, Electrical Engineering.
A PWM Z-bridge source dc-dc converter has a potential to play a prominent role in renewable energy applications, as it provides boosted and regulated output voltage and also behaves as an intermediate buffer between the source and the load. A complete circuit analysis of the Z-bridge source converter is needed to understand the operation of this converter. Steady-state analysis of pulse-width modulated (PWM) Z-bridge source dc-dc converter operating in continuous conduction mode (CCM) is given. Expressions describing waveforms of voltages across and currents through the all components of the PWM Z-bridge source dc-dc converter to operate in steady-state condition are derived. The output-to-input voltage conversion ratio for ideal (lossless) and non-ideal (lossy) conditions are derived. Expressions for the minimum Z-network inductance, the minimum filter inductance, and the minimum Z-network capacitor are derived to operate converter in CCM. To determine the total power loss in PWM Z-bridge source dc-dc converter, power loss expressions for each and every component and the overall efficiency of the PWM Z-bridge source dc-dc converter are determined. Using power loss expressions, the efficiency analysis graphs are plotted using MATLAB to obtain the suitable operating region for the PWM Z-bridge source dc-dc converter in terms of duty cycle, output current, and input voltage. An example of PWM Z-bridge source dc-dc converter is considered and steady-state analysis is performed in saber. The simulation results of designed PWM Z-bridge source dc-dc converter are used to validate the theoretical results. Plant characteristics of PWM Z-bridge source dc-dc converter are performed and the results are reported.
Marian K. Kazimierczuk, Ph.D. (Advisor)
Yan Zhuang, Ph.D. (Committee Member)
Lavern Alan Starman, Ph.D. (Committee Member)
68 p.
Electrical Engineering
Z-Source,Z-bridge Source, Impedance Network, Z-Network, Steady-State Analysis, DC-DC Converter

Recommended Citations

Citations

  • Kathi, L. (2015). Steady-State Analysis of PWM Z-Bridge Source DC-DC Converter [Master's thesis, Wright State University]. OhioLINK Electronic Theses and Dissertations Center. http://rave.ohiolink.edu/etdc/view?acc_num=wright1453223069

    APA Style (7th edition)

  • Kathi, Lokesh. Steady-State Analysis of PWM Z-Bridge Source DC-DC Converter. 2015. Wright State University, Master's thesis. OhioLINK Electronic Theses and Dissertations Center, http://rave.ohiolink.edu/etdc/view?acc_num=wright1453223069.

    MLA Style (8th edition)

  • Kathi, Lokesh. "Steady-State Analysis of PWM Z-Bridge Source DC-DC Converter." Master's thesis, Wright State University, 2015. http://rave.ohiolink.edu/etdc/view?acc_num=wright1453223069

    Chicago Manual of Style (17th edition)

wright1453223069
664
© 2015, all rights reserved.
This open access ETD is published by Wright State University and OhioLINK.