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Machine Performance Comparison

Machine Performance Comparison. Cahya Harianto June 1, 2008. OUTLINE. Magnetically Linear Reluctance Machine Magnetically Linear Reluctance Machine with Capacitor Dual Winding Reluctance Machine Dual Winding Reluctance Machine with Capacitor Saturated Reluctance Machine Comparison Study

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Machine Performance Comparison

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  1. Machine Performance Comparison Cahya Harianto June 1, 2008

  2. OUTLINE • Magnetically Linear Reluctance Machine • Magnetically Linear Reluctance Machine with Capacitor • Dual Winding Reluctance Machine • Dual Winding Reluctance Machine with Capacitor • Saturated Reluctance Machine • Comparison Study • Conclusion

  3. MAGNETICALLY LINEAR RELUCTANCE MACHINE • Steady-State Machine Equations • Torque

  4. MAGNETICALLY LINEAR RELUCTANCE MACHINE WITH CAPACITOR • Steady-State Machine Equations • Torque

  5. DUAL WINDING RELUCTANCE MACHINE • Steady-State Machine Equations • Field Winding • Power Winding

  6. DUAL WINDING RELUCTANCE MACHINE • Operation: • Define: • Substituting to the machine equations:

  7. DUAL WINDING RELUCTANCE MACHINE WITH CAPACITOR • The previous configuration results in a high voltage on the field winding • Adding a capacitor on the field winding yields:

  8. SATURATED RELUCTANCE MACHINE • Steady-State Machine Equations • Torque

  9. PERFORMANCE COMPARISON • In all study, choose Ld = 10 Lq • Compare between magnetically linear RM, magnetically linear RM with capacitor, and Dual Winding RM with capacitor • For Dual Winding RM, choose Ids1 and Iqs2 that produce maximum torque

  10. PERFORMANCE COMPARISON • Maximum torque occur when Ids1 = Iqs2 • Real Power: • Linear RM: • Dual Winding RM: • Reactive Power: • Linear RM: • Dual Winding RM:

  11. PERFORMANCE COMPARISON • Real Power

  12. PERFORMANCE COMPARISON • Reactive Power

  13. PERFORMANCE COMPARISON • VI - curve

  14. PERFORMANCE COMPARISON • Compare the performance of Magnetically linear RM, Saturated RM (with Idp = 3.5 A), and PM • For each machine, choose Ids such that torque is maximized for given 3|V||I| • For this study, choose Lld = 0.1 Lmd

  15. PERFORMANCE COMPARISON • Torque profile and Pout vs (3|V||I|)

  16. PERFORMANCE COMPARISON • Study the effect of saturation • Change from Lld = 0.1 Lmd to Lld = 0.05 Lmd

  17. PERFORMANCE COMPARISON • Torque profile and Pout vs (3|V||I|)

  18. CONCLUSION & FUTURE WORK • Studies to compare the performance of various types machines have been conducted • For the dual-winding RM, addition of capacitor seem to improve the performance of the machine compared to magnetically linear RM • In general, saturated RM have a better performance than a magnetically linear RM; however, the amount of saturation needs to be carefully selected • Need to include the variation of the air gap length with respect to rotor position

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