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Zero Voltage Zero Current

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DC-DC converters with Series Resonance Converter (SRC) topology

DC-DC converters with Series Resonance Converter (SRC) topology

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  • 1. Zero-Voltage- and Zero-Current-Switching with Series Resonance in FB Converter Utilizing Leakage Inductance
    Presented by:
    Guided By:
    JoemonRaju Joseph K
    Reg No.- 09HN026
    M tech PE & D
    Dr. S Suresh Kumar
    (Professor and Head)
    Dept. of EEE
    22-Sep-10
    1
  • 2. Overview
    ZVS and ZCS
    Literatures on ZV-ZCS
    Base Paper Concept & Methodology
    Simulation
    Summary
    Proposed Modification
    References
    22-Sep-10
    2
  • 3. Overview
    ZVS and ZCS
    Literatures on ZV-ZCS
    Base Paper Concept & Methodology
    Simulation
    Summary
    Proposed Modification
    References
    22-Sep-10
    3
  • 4. Zero Voltage Switching &Zero Current Switching
    22-Sep-10
    4
  • 5. Merits
    Lossless switching transition
    Reduced EMI/RFI during switching due to transition
    Short circuit toleration
    Reduction in switching stresses
    22-Sep-10
    5
  • 6. Overview
    ZVS and ZCS
    Literatures on ZV-ZCS
    Base Paper Concept & Methodology
    Simulation
    Summary
    Proposed Modification
    References
    22-Sep-10
    6
  • 7. ZCS Circuit Methodology
    Fig: 1 – Converter with hard switching Auxiliary Circuit
    Fig:2- Fully resonant auxiliary circuit
    Reference [5]
    22-Sep-10
    7
  • 8. ZVS Circuit Methodology
    Fig:3 FB Converter with ZVS
    Reference [13]
    22-Sep-10
    8
  • 9. ZV-ZCS Circuit Methodology
    Using Additional Auxillary Circuits
    Fig:4 FB Converter with Auxiliary Voltage Source
    Reference [11]
    22-Sep-10
    9
  • 10. Using Series Resonant Converters
    Fig:5 HB LCL-T ResonantConverter
    Reference [16]
    10
    22-Sep-10
  • 11. Preference for ZV-ZCS Topologies
    ZCS circuits – Auxiliary circuit Conduction losses, voltage stresses in boost diode
    ZVS circuits – high circulating losses, high valued inductor with increase in power
    22-Sep-10
    11
  • 12. Choice of IGBT
    Has lower cost considering high power and high voltage applications .
    ZVS realizable by adding additional lossless turn off snubber in parallel
    22-Sep-10
    12
  • 13. Overview
    ZVS and ZCS
    Literatures on ZV-ZCS
    Base Paper Concept & Methodology
    Simulation
    Summary
    Proposed Modification
    References
    22-Sep-10
    13
  • 14. ZV-ZCS FB Converter with Secondary Resonance
    22-Sep-10
    14
  • 15. Concept
    SRC based circuit
    Leakage inductance of transformer participates in resonance
    Turn-on of leading legs possible under all operating conditions and lossless snubber reduces their turn off losses
    Lagging legs can be turned on at ZV and turned off near ZC without additional aux. circuits
    22-Sep-10
    15
  • 16. Control Signal
    Normal PWM
    Phase Shifted PWM
    22-Sep-10
    16
  • 17. Circuit Operation
    • Mode-1
    im(t) = ip(t) = iT1(t) = −iT2(t) = im(t0) ...(1)
    22-Sep-10
    17
  • 18.
    • Mode-2
    22-Sep-10
    18
  • 19. is(t) = sin ωr(t − t1) x nVin − (Vo − Vc(t1))/Zo …(2)
    ωr = 2πfr = 1/√(LlkCr) …(angular resonance frequency)
    Zo = √(Lr/Cr) …(Characteristic Impedance)
    im(t) = im(t1) + (Vin/Lm) x (t − t1) ….(3)
    ip(t) = im(t) + nis(t) = iT1(t) = iB2(t) ....(4)
    22-Sep-10
    19
  • 20.
    • Mode-3
    is(t) = is (t2) cos ωr(t − t2) − [Vo − Vc(t2)] x sin ωr(t − t2)/Zo …(5)
    ip(t) = im(t) + nis (t) = −iB1(t) = iB2(t) ...(6)
    21-Sep-10
    20
  • 21. Operation Waveforms
    t4
    t5
    t6
    t1
    t3
    to
    t2
    21-Sep-10
    21
  • 22. Other Design Factors
    Frequency Ratio: F = fr/fs
    Quality Factor: Q =4ωrLlk/Ro
    tch= (CT1+CB1) x Vin/ (Ip1+ Im2max)… Charging time of Capacitance
    21-Sep-10
    22
  • 23. Overview
    ZVS and ZCS
    Literatures on ZV-ZCS
    Base Paper Concept & Methodology
    Simulation
    Summary
    Proposed Modification
    References
    21-Sep-10
    23
  • 24. Assumptions for Analysis
    Ideal Switches
    Ripple free Input Voltage
    Ideal transformer with magnetizing and leakage inductances alone
    Frequency ratio, F=1
    22-Sep-10
    24
  • 25. PSIM Model
    Control Signal
    21-Sep-10
    25
  • 26. Model Parameters
    21-Sep-10
    26
  • 27. Phase Shifted PWM Generation
    21-Sep-10
    27
  • 28. 21-Sep-10
    28
  • 29. Simulation Results
    Phase Shifted PWM Signals
    21-Sep-10
    29
  • 30. Simulation Results
    Switching Currents
    ZVS ON
    ZVS ON
    ZCS OFF
    21-Sep-10
    30
  • 31. Overview
    ZVS and ZCS
    Literatures on ZV-ZCS
    Base Paper Concept & Methodology
    Summary
    Proposed Modification
    References
    21-Sep-10
    31
  • 32. Inference from Literatures:
    • ZV-ZCS has upper hand in effectiveness rather than ZVS or ZCS alone
    • 33. IGBT is preferable for high power application
    Inference from Base Paper:
    • Transformer design plays a crucial role for ZV-ZCS to avoid additional inductor
    22-Sep-10
    32
  • 34. Overview
    ZVS and ZCS
    Literatures on ZV-ZCS
    Base Paper Concept & Methodology
    Methodology
    Summary
    Proposed Modification
    References
    21-Sep-10
    33
  • 35. Intended Modification
    Realization of the concept with Bridge rectifier at the transformer secondary.
    Projected Circuit Configuration
    21-Sep-10
    34
  • 36. References
    Eung-Ho Kim and Bong-Hwan Kwon,” Zero-Voltage- and Zero-Current-Switching Full-Bridge Converter With Secondary Resonance”, IEEE Trans. Ind. Electron., vol. 57, no. 3, pp. 1017–1025, Mar. 2010.
    X. Wu, J. Zhang, X. Ye, and Z. Qian, “Analysis and derivations for a family ZVS converter based on a new active clamp ZVS cell,” IEEE Trans. Ind. Electron., vol. 55, no. 2, pp. 773–781, Feb. 2008.
    J. J. Lee, J. M. Kwon, E. H. Kim, and B. H. Kwon, “Dual series resonant active-clamp converter,” IEEE Trans. Ind. Electron., vol. 55, no. 2, pp. 699–710, Feb. 2008.
    C. M. Wang, “A novel ZCS-PWM flyback converter with a simple ZCSPWM
    commutation cell,” IEEE Trans. Ind. Electron., vol. 55, no. 2, pp. 749–757, Feb. 2008.
    X. Wu, X. Xie, C. Zhao, Z. Qian, and R. Zhao, “Low voltage and current stress ZVZCS full bridge DC–DC converter using center tapped rectifier reset,” IEEE Trans. Ind. Electron., vol. 55, no. 3, pp. 1470–1477, Mar. 2008.
    M. Borage, S. Tiwari, and S. Kotaiah, “LCL-T resonant converter with clamp diodes: A novel constant-current power supply with inherent constant-voltage limit,” IEEE Trans. Ind. Electron., vol. 54, no. 2, pp. 741–746, Apr. 2007.
    35
    21-Sep-10
  • 37. J. T. Matysik, “The current and voltage phase shift regulation in resonant converters with integration control,” IEEE Trans. Ind. Electron., vol. 54, no. 2, pp. 1240–1242, Apr. 2007.
    E. Adib and H. Farzanehfard, “Family of zero-current transition PWM converters,” IEEE Trans. Ind. Electron., vol. 55, no. 8, pp. 3055–3063, Aug. 2008.
    E. H. Kim and B. H. Kwon, “High step-up push-pull converter with high efficiency,” IET Power Electron., vol. 2, no. 1, pp. 79–89, Jan. 2009.
    Y. Tsuruta, Y. Ito, and A. Kawamura, “Snubber-assisted zero-voltage and zero-current transition bilateral buck and boost chopper for EV drive application and test evaluation at 25 kW,” IEEE Trans. Ind. Electron., vol. 56, no. 1, pp. 4–11, Jan. 2009.
    J. L. Russi, M. L. S. Martins, and H. L. Hey, “Coupled-filter-inductor soft-switching techniques: Principles and topologies,” IEEE Trans. Ind. Electron., vol. 55, no. 9, pp. 3361–3373, Sep. 2009.
    T. Citko and S. Jalbrzykowski, “Current-fed resonant full-bridge boost DC/AC/DC converter,” IEEE Trans. Ind. Electron., vol. 55, no. 3, pp. 1198–1205, Mar. 2008.
    Yungtaek Jang, Milan M. Jovanovic and Yu-Ming Chang, ”A New ZVS-PWM Full-Bridge Converter,” IEEE Trans. Power Electronics, Vol. 18, No. 5,pp.1122-1129, Sep 2003
    21-Sep-10
    36