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

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

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

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

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

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

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

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