180degree conduction mode of 3 phase inverter
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This document discusses the 180 degree conduction mode of a 3 phase inverter. It operates by having three transistors conducting at a time over three modes as the phase shifts 60 degrees each time. Tables and equations are provided showing the transistors conducting, equivalent resistances, phase voltages and currents for each of the three operating modes.
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180degree conduction mode of 3 phase inverter
- 1. 1800 conduction mode of 3 phase inverter Manikandan.S M.Tech Power System
- 4. 180° Conduction • Three transistors ON at a time
- 6. Waveforms for 180° Conduction
- 7. Phase Voltages for 180° Conduction
- 8. Waveforms for 180° Conduction
- 10. Mode 1 Operation
- 11. Mode 1 Operation π 0 ≤ ωt ≤ 3 R 3R Req = R + = 2 2 Vs 2Vs i1 = = Req 3R Q1, Q5, Q6 conduct i1 R Vs van = vcn = = 2 3 −2Vs vbn = −i1 R = 3
- 12. Summary Table
- 13. Mode 2 Operation
- 14. Mode 2 Operation π 2π ≤ ωt ≤ 3 3 R 3R Req = R + = 2 2 Vs 2Vs i2 = = Req 3R Q1, Q2, Q6 conduct 2Vs van = i2 R = 3 −i2 R −Vs vbn = vcn = = 2 3
- 15. Summary Table
- 16. Mode 3 Operation
- 17. Mode 3 Operation 2π ≤ ωt ≤ π 3 R 3R Req = R + = 2 2 Vs 2Vs i3 = = Req 3R Q1, Q2, Q3 conduct i3 van = vbn = 2 −2Vs vcn = i3 R = 3
- 18. Phase Voltages for 180° Conduction