Seminar on Improved Power Quality AC-DC Converters with High Frequency Transformer Isolation - PowerPoint PPT Presentation

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Seminar on Improved Power Quality AC-DC Converters with High Frequency Transformer Isolation

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Seminar on Improved Power Quality AC-DC Converters with High Frequency Transformer Isolation
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Seminar on Improved Power Quality AC-DC Converters with High Frequency Transformer Isolation

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  1. Seminar onImproved Power Quality AC-DC Converters with High Frequency Transformer Isolation ByProf. Bhim Singh Department of Electrical Engineering Indian Institute of Technology Delhi Hauz Khas, New Delhi-110016, Indiaemail:bhimsinghr@gmail.comPh.: (91)-011-2659-1045

  2. Classification

  3. Improved Power Quality AC-DC Converters with High Frequency Transformer Isolation • The control of DC-DC converter is done such as the input current wave shaping is achieved for AC-DC Diode converter. • The DC-DC converter can be operated in both DCM and CCM mode. • The control technique for DCM and CCM are different. • It works as voltage follower in DCM mode and there is no need of input voltage & current sensing for power factor correction.

  4. Applications • DC Power Supplies, • Telecommunication Power Supply, • Improved Power Factor ballast, • Power Supplies for equipments like computers, medical equipments, printers, scanners etc. • Drives Applications with Power Factor Improvement at AC side, • Electrical Welding, • Lighting such as ballasts, CFL etc.

  5. Single-Phase Buck Boost Flyback AC-DC Converter

  6. Single-Phase Buck Forward AC-DC Converter

  7. Single-Phase Buck Push-Pull AC-DC Converter

  8. Single-Phase Buck Half-Bridge AC-DC Converter

  9. Single-Phase Buck Full Bridge AC-DC Converter

  10. Single-Phase Boost Forward AC-DC Converter

  11. Single-Phase Boost Push-Pull AC-DC Converter

  12. Single-Phase Boost Half-Bridge AC-DC Converter

  13. Single-Phase Boost Full Bridge AC-DC Converter

  14. Single-Phase Buck-Boost Cuk AC-DC Converter

  15. Single-Phase Buck-Boost SEPIC AC-DC Converter

  16. Single-Phase Buck-Boost Zeta AC-DC Converter

  17. Single-phase buck-boost flyback AC-DC converter in DCM

  18. Single-Phase Buck Boost Flyback AC-DC ConverterAverage current mode control in CCM operation

  19. Single-Phase Buck Boost Flyback AC-DC ConverterFLYBACK Converter in DCM

  20. Single-Phase Buck Boost Flyback AC-DC ConverterDesign of Flyback Converter in DCM

  21. Single-Phase Buck Boost Flyback AC-DC ConverterDesign of Flyback Converter in DCM

  22. Single-Phase Buck Boost Flyback AC-DC ConverterDesign of Flyback Converter in DCM

  23. Single-Phase Buck Boost Flyback AC-DC ConverterDesign of Flyback Converter in DCM and CCM

  24. Single-Phase Buck Boost Flyback AC-DC ConverterDesign of Flyback Converter in DCM and CCM

  25. Single-Phase Buck Boost Flyback AC-DC ConverterDesign of Flyback Converter in DCM and CCM

  26. Single-Phase Buck Boost Flyback AC-DC ConverterSpecifications

  27. Single-Phase Buck Boost Flyback AC-DC Converter Source voltage and current in DCM at 100% load Steady state output voltage in DCM at 100% load

  28. Single-Phase Buck Boost Flyback AC-DC Converter Source voltage and current in CCM at 100% load Steady state output voltage in CCM at 100% load

  29. Single-Phase Buck Boost Flyback AC-DC Converter TABLE I Comparisons of Flyback Converter Operation in DCM and CCM

  30. Single-Phase Buck Boost Flyback AC-DC Converter Vs (V), is(A) Vdc (V) Idc (A) Test results of AC mains voltage, AC mains current, output DC voltage and output DC current waveform of AC-DC flyback converter for load perturbation response on equivalent resistive load (60W to 200W to 60W). (Scale on X-axis 1div=20ms, Y-axis channel-1 1div =85V, channel-2 1div =5A, channel-3 1div= 100V, channel-4 1div= 2A)

  31. Single-Phase Buck-Boost Cuk AC-DC Converter in DCM

  32. Single-Phase Cuk AC-DC ConverterInductors voltage and current waveforms in DCM

  33. Single-Phase Cuk AC-DC ConverterCCM operation

  34. Single-Phase Cuk AC-DC ConverterInductors voltage and current waveforms in CCM

  35. Single-Phase Cuk AC-DC Converter in DCM Operation

  36. Single-Phase Cuk AC-DC Converter in DCM

  37. Single-Phase Cuk AC-DC Converter in DCM

  38. Single-Phase Cuk AC-DC Converter in DCM

  39. Single-Phase Cuk AC-DC ConverterAverage and peak currents in the semiconductors and input inductor

  40. Single-Phase Cuk AC-DC ConverterAverage and peak currents in the semiconductors and input inductor

  41. Single-Phase Cuk AC-DC Converter Design Description in DCM and CCM

  42. Design Description in DCM and CCM

  43. Design Description in DCM and CCM

  44. Design Description in DCM and CCM

  45. Single-Phase Cuk AC-DC ConverterSpecifications

  46. Single-Phase Buck-Boost Cuk AC-DC Converter Source voltage and current in DCM at 100% load Steady state output voltage in DCM at 100% load

  47. Single-Phase Buck-Boost Cuk AC-DC Converter Source voltage and current for 100% load in CCM Steady state output voltage in CCM at 100% load

  48. Single-Phase Buck-Boost Cuk AC-DC Converter TABLE I Comparisons of Cuk Converter Operation in DCM and CCM at Full Load

  49. Single-Phase Buck-Boost Cuk AC-DC Converter Vs (V), is(A) Vdc (V) Idc (A) Test results of AC mains voltage, AC mains current, output DC voltage and output DC current waveform of AC-DC cuk converter for load perturbation response on equivalent resistive load (60W to 200W to 60W). (Scale on X-axis 1div=20ms, Y-axis channel-1 1div =175V, channel-2 1div =5A, channel-3 1div= 100V, channel-4 1div= 1.75A)

  50. Single-Phase SEPIC AC-DC Converter in DCM