New Microsoft PowerPoint Presentation (2).pptx

kkkkk

1. An- Najah National University Faculty of Engineering Electrical Engineering Department Dr Kamel Saleh 1 Modern Trends in Modern Trends in Power Electronics & Power Electronics & Electric Drives 1

2. An- Najah National University Faculty of Engineering Electrical Engineering Department Dr Kamel Saleh 2 Power Electronics can be considered as : “The technology associated with the conversion, control and conditioning of electric power from its available form to the desired electrical form, by the application of electronics”

3. An- Najah National University Faculty of Engineering Electrical Engineering Department Dr Kamel Saleh 3 Why Power Electronics ? Power Electronics is one of the fastest changing technology today, having gone through dynamic changes in the last several decades The solid state era, which has accelerated automation in industry, has led to increased R&D in Power Electronics, in order to meet the demands of increased productivity and improved product quality

4. An- Najah National University Faculty of Engineering Electrical Engineering Department Dr Kamel Saleh 4 Why Power Electronics ? The technologies involved have been going through constant change, depending on the demands of its diverse and ever-expanding application area Today, significant developments in non-power-electronics areas are catalyzing spontaneous development in power electronic converters for those specific areas The future of Power Electronics is truly multi-disciplined and multi-solutioned in nature

5. An- Najah National University Faculty of Engineering Electrical Engineering Department Dr Kamel Saleh 5 Importance of Power Electronics ? Conversion of electrical energy from one form to another of choice. Smooth control of electrical power flow. High efficiency involved in the above processes. High speed of response Permits controlled storage of energy for use when required High reliability of the controlling system. Compact size of the controlling system.

6. An- Najah National University Faculty of Engineering Electrical Engineering Department Dr Kamel Saleh 6 Developments in High Power Semiconductors? Insulated Gate Bipolar Transistors (IGBT): 1.2kV, 1400A to 6.5kV, 750A Integrated Gate Commutated Thyristors(IGCT): 4.5kV, 2100A to 6.5kV, 1290A Gate Turn Off Thyristors(GTO): 2.5kV, 3000A to 4.5kV, 4000A

7. An- Najah National University Faculty of Engineering Electrical Engineering Department Dr Kamel Saleh 7 Developments in High Power Semiconductors?

8. An- Najah National University Faculty of Engineering Electrical Engineering Department Dr Kamel Saleh 8 Power electronics systems for different power conversions

9. An- Najah National University Faculty of Engineering Electrical Engineering Department Dr Kamel Saleh 9 Power electronics systems applications

10. An- Najah National University Faculty of Engineering Electrical Engineering Department Dr Kamel Saleh 10 Field Orient Control of AC Drive Field Orient Control Of AC Machine helps to control AC Motors easily similar to control DC motor

11. An- Najah National University Faculty of Engineering Electrical Engineering Department Dr Kamel Saleh 11 11 Field Orient Control of AC Drive-Results

12. An- Najah National University Faculty of Engineering Electrical Engineering Department Dr Kamel Saleh 12 New generation of Power Electronics converters Multi-level inverter Mult -level inverter can bed cosidered as switch DC source Can generated higher voltage Less THD Fault Tolerant

13. An- Najah National University Faculty of Engineering Electrical Engineering Department Dr Kamel Saleh 13 Multi-level inverter Topologies

14. An- Najah National University Faculty of Engineering Electrical Engineering Department Dr Kamel Saleh 14 Multi-level inverter Topologies- Diode Clamp

15. An- Najah National University Faculty of Engineering Electrical Engineering Department Dr Kamel Saleh 15 Multi-level inverter Topologies- Capacitor Clamp

16. An- Najah National University Faculty of Engineering Electrical Engineering Department Dr Kamel Saleh 16 Multi-level inverter Topologies- Cascaded H-bridge

17. An- Najah National University Faculty of Engineering Electrical Engineering Department Dr Kamel Saleh 17 Multi-level inverter Modulation

18. An- Najah National University Faculty of Engineering Electrical Engineering Department Dr Kamel Saleh 18 Multi-level inverter Space vector PWM-Example

19. An- Najah National University Faculty of Engineering Electrical Engineering Department Dr Kamel Saleh 19 Multi-level inverter Results

20. An- Najah National University Faculty of Engineering Electrical Engineering Department Dr Kamel Saleh 20 Fault-Tolerant Inverter The neutral point of the motor is connected to a four leg. Continue operation under open-circuit fault

21. An- Najah National University Faculty of Engineering Electrical Engineering Department Dr Kamel Saleh 21 Fault-Tolerant Inverter Special Control Technique under fault

22. An- Najah National University Faculty of Engineering Electrical Engineering Department Dr Kamel Saleh 22 Fault-Tolerant Inverter 3 D space vector modulation

23. An- Najah National University Faculty of Engineering Electrical Engineering Department Dr Kamel Saleh 23 23 Fault-Tolerant Inverter Neutral connection No neutral connection mode Healthy mode Under fault, the phase shift between the two healthy currents will be 60 and amplitude is increased by sqrt(3)

24. An- Najah National University Faculty of Engineering Electrical Engineering Department Dr Kamel Saleh 24 24 Multi-phase Inverter More torque per volume Fault tolerant

25. An- Najah National University Faculty of Engineering Electrical Engineering Department Dr Kamel Saleh 25 25 Multi-phase Inverter results

26. An- Najah National University Faculty of Engineering Electrical Engineering Department Dr Kamel Saleh 26 26 Multi-phase Inverter-open circuit

27. An- Najah National University Faculty of Engineering Electrical Engineering Department Dr Kamel Saleh 27 27 Multi-phase Inverter- open circuit results

28. An- Najah National University Faculty of Engineering Electrical Engineering Department Dr Kamel Saleh 28 28 MRAS; Full-Order Observer; Kalman Filter Reduced-Order observer; …… ---- Sensorless Control Methods Fundamental Stator Quantities Mathematical Models Flux Estimation Back EMF Machine Parameters Increasing relative errors Decreasing magnitudes 1. Model-based Methods When the speed decrease s

29. An- Najah National University Faculty of Engineering Electrical Engineering Department Dr Kamel Saleh 29 ---- Sensorless Control Methods Excitation signals Measurement of the Resulting Responses Extraction of the Flux Position Geometrical saliency Discrete Test Vector Modified PWM Excitation 2. Saliency Tracking Methods Signal Injection Saliency Tracking Saturation-induced Saliency

30. ---Anisotropy model of SMPM machine Back EMF and resistors’ voltage drop are cancelled An- Najah National University Faculty of Engineering Electrical Engineering Department

31. ---Anisotropy model of SMPM machine where An- Najah National University Faculty of Engineering Electrical Engineering Department

32. An- Najah National University Faculty of Engineering Electrical Engineering Department Dr Kamel Saleh 32 32 Sensorless control of fault-tolerant Inverter

33. An- Najah National University Faculty of Engineering Electrical Engineering Department Dr Kamel Saleh 33 33 Sensorless control of fault-tolerant multi-level Inverter

34. An- Najah National University Faculty of Engineering Electrical Engineering Department Dr Kamel Saleh 34 34 Sensorless control of fault-tolerant five phase Inverter