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Reduced Structure Inverter Fed Electric Motor Drives: an Attempt to Improve the Cost-effectiveness, the Compactness and the Reliability of Electric and Hybrid Propulsion Systems. Research Unit on Renewable Energies & Electric Vehicles University of Sfax Sfax Engineering School Tunisia.

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Research Unit on Renewable Energies & Electric Vehicles University of Sfax Sfax Engineering School


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    1. Reduced Structure Inverter Fed Electric Motor Drives: an Attempt toImprove the Cost-effectiveness, the Compactness and the Reliability of ElectricandHybrid Propulsion Systems Research Unit on Renewable Energies & Electric Vehicles University of Sfax Sfax Engineering School Tunisia Ahmed Masmoudi

    2. Life Cycle Protection: a Universal Commitment

    3. Automotive Industry: Flashback Till the 60th, automotive manufacturers didn’t worry about the cost of fuel. They have never heard of air pollution, and they have never thought about life cycle. Ease of operation with reduced maintenance costs meant everything back then.

    4. Air Pollution: the MajorDrawback of ICE air pollution ICE

    5. Automotive Industry: New Trends Times have changed. In recent years, clean airmandates are driving the market to embrace new propulsion systems in order to substituteor toassist the ICE, resulting in electric and hybrid vehicles.

    6. Series Hybrid Powertain

    7. Parallel Hybrid Powertrain

    8. Series/Parallel Hybrid Powertrain

    9. Electric Machine Design:New Trends New approach which considers that the best machine design is the one providing the optimum match between the machine and the associated converter leading to the so-called converter-fed machines.

    10. Electric Motor S1 S2 S3 C Vc B A S4 S5 S6 Electric Machine Drives: Conventional SSTPI

    11. Reduced Structure Inverters:What is gained? Lower number of the power switches and of the associated control boards with respect to the conventional SSTPI • Improvement of the cost-effectiveness • Decrease of the occupied volume • Enhanced reliability thanks to the reduction of the luck of failures

    12. Outline • Study statement • FSTPI fed electric machine drives • FSTPI fed BDCM drives • FSTPI fed IM drives • TSTPI fed electric machine drives • TSTPI fed BDCM drives • TSTPI fed IM drives • Conclusion and Outlook

    13. Four-switch Three-phase Inverter Fed Electric Machine Drives

    14. Connections of the FSTPI

    15. FSTPI Fed Brushless DCMotor Drives

    16. FSTPI Fed BDCM Drive: Principle of Operation

    17. FSTPI Fed BDCM: Principle of Operation

    18. FSTPI Fed BDCM Drive: Principle of Operation

    19. FSTPI Fed BDCM Drive: Principle of Operation

    20. FSTPI Fed BDCM Drive: Principle of Operation

    21. FSTPI Fed BDCM Drive: Principle of Operation

    22. FSTPI Fed BDCM Drive: Linear Speed Control

    23. FSTPI Fed BDCM Drive: Start-up

    24. SSTPI Fed BDCM Drive: Start-up

    25. FSTPI Fed BDCM Drive: Start-up

    26. SSTPI Fed BDCM Drive: Start-up

    27. FSTPI Fed BDCM Drive: Steady-state Operation

    28. SSTPI Fed BDCM Drive: Steady-state Operation

    29. FSTPI Fed BDCM Drive: Fuzzy Speed Control

    30. FSTPI Fed InductionMotor Drives

    31. FSTPI Fed IM Drive:Direct Torque Control Scheme

    32. V3 c +1 -1 V2 3 2 cT +1 0 -1 +1 0 -1 Φs 6 5 V5 S1 V2 V7 V6 V3 V0 V0 V1 4 θs V6 S2 V3 V0 V1 V4 V7 V4 Vα V7 S3 V4 V7 V2 V5 V0 V1 S4 V5 V0 V3 V6 V7 V2 1 S5 V6 V7 V4 V1 V0 V3 V5 V6 S6 V1 V0 V5 V2 V7 V4 DTC of FSTPI Fed IM Drive:Vector Selection Table

    33. V4 V7 V3 V5 1 V2 2 Vα 3 V4 V8 V6 4 V1 V1 V2 V3 DTC of FSTPI Fed IM Drive:Vector Selection Table

    34. 14 13 15 16 12 17 Vβs Vβs 18 11 19 10 V7 V7 V5 V5 9 20 8 1 1 V2 V2 7 2 6 5 Vαs Vαs 8 5 6 4 7 3 3 2 V4 V6 V8 V8 V4 V6 4 V1 V1 V1 V1 V3 V3 DTC of FSTPI Fed IM Drive:Vector Selection Table

    35. [rad/s] [rad/s] 120 120 100 100 W W W W W W W W m m m m m m m m 80 80 * * * * 60 60 40 40 20 20 0 0 0 0.5 1 1.5 2 0 0.5 1 1.5 2 Time [sec] Time [sec] DTC of a FSTPI Fed IM Drive:Transient Behavior During Start-up SSTPI FSTPI

    36. [Nm] [Nm] 60 60 50 50 T T em em 40 40 30 30 20 20 10 10 T T T T l l l l 0 0 -10 -10 0 0.5 1 1.5 2 0 0.5 1 1.5 2 Time [sec] Time [sec] DTC of a FSTPI Fed IM Drive:Transient Behavior During Start-up SSTPI FSTPI

    37. 120 120 80 80 ias[A] ias[A] 40 40 0 0 -40 -40 80 80 -120 -120 0 0 0.5 0.5 1 1 1.5 1.5 2 2 Time [sec] Time [sec] DTC of a FSTPI Fed IM Drive:Transient Behavior During Start-up SSTPI FSTPI

    38. Fβs[Wb] Fβs[Wb] 0.8 0.8 0.4 0.4 0 0 -0.4 -0.4 -0.8 -0.8 -0,8 -0,8 -0,4 -0,4 0 0 0.4 0.4 0.8 0.8 Fαs[Wb] Fαs[Wb] DTC of a FSTPI Fed IM Drive:Transient Behavior During Start-up SSTPI FSTPI

    39. Sk Sk 7 22 20 6 18 16 5 14 4 12 10 3 8 2 6 4 1 2 0 0 1.96 1.975 1.99 1.96 1.975 1.99 Time [sec] Time [sec] DTC of a FSTPI Fed IM Drive:Steady-state Features SSTPI FSTPI

    40. 30 30 ibs ics ias ias ibs ics 20 20 10 10 0 0 -10 -10 -20 -20 -30 -30 1.96 1.975 1.99 1.96 1.975 1.99 Time [sec] Time [sec] DTC of a FSTPI Fed IM Drive:Steady-state Features SSTPI FSTPI

    41. Amplitude [A] Amplitude [A] 25 25 20 20 15 15 10 10 5 5 0 0 5 10 15 20 25 30 35 40 45 50 5 10 15 20 25 30 35 40 45 50 Harmonic rank Harmonic rank DTC of a FSTPI Fed IM Drive:Steady-state Features SSTPI FSTPI

    42. Three-switch Three-phase Inverter Fed Electric Machine Drives

    43. Connections of the TSTPI

    44. TSTPI Fed Brushless DCMotor Drives

    45. TSTPI Fed BDCM Drive: Principle of operation

    46. Principle of Operation

    47. TSTPI Fed BDCM Drive: Linear Speed Control

    48. 18 (N.m) 16 T em 14 T l 12 10 8 6 4 2 0 0 0.4 0.7 1 1.3 Time (s) 6 (N.m) T em T l 5.5 5 4.5 4 1.21 1.211 1.212 1.213 1.214 1.215 1.216 1.217 1.218 1.219 Time (s) TSTPI Fed BDCM Drive: Start-up Electromagnetic and Load Torques 18 (N.m) 16 T em T 14 l 12 10 8 6 4 2 0 0 0.4 0.7 1 1.3 Time (s) SSTPI TSTPI

    49. i (A) a 40 30 20 10 0 -10 -20 -30 -40 1.21 1.215 1.22 1.225 1.23 Time (s) TSTPI Fed BDCM Drive: Start-up Phase Current 100 (A) 80 i a 60 40 20 0 -20 -40 -60 -80 -100 0 0.4 0.7 1 1.3 Time (s)

    50. Accounting for the Equivalent Circuit of the Battery Pack C C C Cdl Modified Randles Equivalent Circuit of an Ni-mH Battery RΩ Eeq Zw Rn R1 R2 Rtc Zi