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Series Resonant Inverter with Bidirectional Switch

Series Resonant Inverter with Bidirectional Switch. Turn Q 1 ON at t = 0 A “resonant” pulse of current flows, charging C to V C1 , Q1 turns OFF. C charges to V C1 , Q1 turns OFF. C discharges via D1 and V s. For t > t 1 The capacitor acts as a voltage source

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Series Resonant Inverter with Bidirectional Switch

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  1. Series Resonant Inverter with Bidirectional Switch ECE 442 Power Electronics

  2. Turn Q1 ON at t = 0 A “resonant” pulse of current flows, charging C to VC1, Q1 turns OFF ECE 442 Power Electronics

  3. C charges to VC1, Q1 turns OFF ECE 442 Power Electronics

  4. C discharges via D1 and Vs • For t > t1 • The capacitor acts as a voltage source • Current io reverses, and flows via D1 to VS ECE 442 Power Electronics

  5. “Idealized Version” ECE 442 Power Electronics

  6. ECE 442 Power Electronics

  7. Half-Bridge Series Resonant Inverter ECE 442 Power Electronics

  8. Turn Q1 ON, Resonant Pulse of current appears. ECE 442 Power Electronics

  9. Turn Q2 ON, Resonant Pulse of current appears in the opposite direction, and goes to zero. ECE 442 Power Electronics

  10. Waveform Summary ECE 442 Power Electronics

  11. Overlapping and Non-Overlapping modes • Non-Overlapping Mode • Firing of the switching device is delayed until the last current oscillation through the diode is completed ECE 442 Power Electronics

  12. Overlapping and Non-Overlapping modes • Overlapping Mode • Firing of the switching device occurs before the last current oscillation through the diode is completed. • This increases the output frequency and the output power ECE 442 Power Electronics

  13. MultiSim Simulation ECE 442 Power Electronics

  14. Non-Overlapping Mode ECE 442 Power Electronics

  15. Overlapping Mode ECE 442 Power Electronics

  16. Full-Bridge Series Resonant Inverter ECE 442 Power Electronics

  17. Frequency Response of Series-Resonant Inverters ECE 442 Power Electronics

  18. Series-Loaded Inverter • Load Resistor in series with L and C ECE 442 Power Electronics

  19. ECE 442 Power Electronics

  20. ECE 442 Power Electronics

  21. Frequency Response ECE 442 Power Electronics

  22. Parallel-Loaded Case ECE 442 Power Electronics

  23. ECE 442 Power Electronics

  24. ECE 442 Power Electronics

  25. Frequency Response ECE 442 Power Electronics

  26. Series-Parallel Loaded Case ECE 442 Power Electronics

  27. Frequency Response ECE 442 Power Electronics

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