1. 1 Examples Analytical & Theoretical Modeling Field-weakening zone optimization [EV propulsion motor]

2. 2 Examples Analytical & Theoretical Modeling n Flux weakening zone –Sharing the “torque - speed” plane n Flux weakening zone –Sharing the “torque - speed” plane U in(max) - max voltage k mm - specific motor constant L mm - specific motor inductance L c - choke inductance w - winding turns number

3. 3 Examples Analytical & Theoretical Modeling n Flux weakening zone –T urns number influence n Flux weakening zone –T urns number influence Small turns number Big turns number

4. 4 Examples Analytical & Theoretical Modeling n Flux weakening zone –Inductivity influence n Flux weakening zone –Inductivity influence High inductivityLow inductivity

5. 5 Examples Analytical & Theoretical Modeling n Flux weakening zone –Design objectives n Flux weakening zone –Design objectives

6. 6 Examples Analytical & Theoretical Modeling n Flux Weakening Zone MathCAD calculations –Power Vs Axle Speed Grafs »180 A RMS Transistor n Flux Weakening Zone MathCAD calculations –Power Vs Axle Speed Grafs »180 A RMS Transistor Push-pull topology approach Classic topology approach

7. 7 Examples Analytical & Theoretical Modeling n Flux Weakening Zone MathCAD calculations –Power Vs Axle Speed Grafs (cont.) »220 A RMS Transistor n Flux Weakening Zone MathCAD calculations –Power Vs Axle Speed Grafs (cont.) »220 A RMS Transistor Push-pull topology approach Classic topology approach

8. 8 Examples Analytical & Theoretical Modeling n Flux Weakening Zone MathCAD calculations –Torque Vs Axle Speed Grafs »180 A RMS Transistor n Flux Weakening Zone MathCAD calculations –Torque Vs Axle Speed Grafs »180 A RMS Transistor Push-pull topology approach Classic topology approach

9. 9 Examples Analytical & Theoretical Modeling n Flux Weakening Zone MathCAD calculations –Torque Vs Axle Speed Grafs (cont.) »220 A RMS Transistor n Flux Weakening Zone MathCAD calculations –Torque Vs Axle Speed Grafs (cont.) »220 A RMS Transistor Push-pull topology approach Classic topology approach

10. 10 Examples Analytical & Theoretical Modeling n Phase Currents Calculations –180 A RMS Transistor n Phase Currents Calculations –180 A RMS Transistor Push-pull topology approach Classic topology approach

11. 11 Examples Analytical & Theoretical Modeling n Phase Currents Calculations –220 A RMS Transistor n Phase Currents Calculations –220 A RMS Transistor Push-pull topology approach Classic topology approach

12. 12 Examples Analytical & Theoretical Modeling n Efficiencies Calculations –Versus axle speed @ constant power »180 A RMS Transistor n Efficiencies Calculations –Versus axle speed @ constant power »180 A RMS Transistor Push-pull topology approach Classic topology approach

13. 13 Examples Analytical & Theoretical Modeling n Efficiencies Calculations –Versus axle speed @ constant power »220 A RMS Transistor n Efficiencies Calculations –Versus axle speed @ constant power »220 A RMS Transistor Push-pull topology approach Classic topology approach

14. 14 Examples Analytical & Theoretical Modeling n Efficiency Map Calculations –Vs axle speed & power @ 180 A RMS Transistor n Efficiency Map Calculations –Vs axle speed & power @ 180 A RMS Transistor Push-pull topology approach Classic topology approach

15. 15 Examples Analytical & Theoretical Modeling n Efficiency Map –Vs axle speed & power @ 200 A RMS Transistor n Efficiency Map –Vs axle speed & power @ 200 A RMS Transistor Classic topology approach

16. 16 Examples Analytical & Theoretical Modeling n Efficiency Map –Vs axle speed & power @ 220 A RMS Transistor n Efficiency Map –Vs axle speed & power @ 220 A RMS Transistor Classic topology approach