TAILIEUCHUNG - Electric Vehicles Modelling and Simulations Part 9

Tham khảo tài liệu 'electric vehicles modelling and simulations part 9', kỹ thuật - công nghệ, cơ khí - chế tạo máy phục vụ nhu cầu học tập, nghiên cứu và làm việc hiệu quả | Hybrid Switched Reluctance Motor and Drives Applied on a Hybrid Electric Car 229 Results and are the measured wave form of armature EMF upper one and axial coil EMF when rotor speeds are 300 rpm 1200rpm and 2400rpm. It is seen that there are 6 zero points in the axial coil EMF signal corresponding in 1 cycle of armature EMF signal which can be the commuted signals to drive motor. B Axial coil EMF A Armature EMF Fig. 11. Measured wave form of axial coil emf and armature emf when 300rpm B Axial coil EMF A Armature EMF Fig. 12. Measured wave form of axial coil emf and armature emf when 1200rpm 230 Electric Vehicles - Modelling and Simulations B Axial coil EMF A Armature EMF Fig. 13. Measured wave form of armature EMF and axial coil EMF when 2400rpm is torque-speed characteristic and efficiency map of the motor drives. Large torque and high speed are obtained by flux adjusting control. Fig. 14. Efficiency map of the motor drives Hybrid Switched Reluctance Motor and Drives Applied on a Hybrid Electric Car 231 8. Conclusion Demands of motor drive for a Mid-size hybrid electric car are analyzed by simulation. A novel hybrid switched reluctance motor drive is developed which is suitable for applying in electric vehicles. Frequency of EMF in axial coil is three times of that of terminal voltage over one phase of radial coil and is three times of that of EMF in radial coil. It means that the axial coil can be the position sensor of rotor. Simple flux adjusting control is developed to achieve large torque and high speed. An energy saving test bed is developed. With applying the common DC bus technique 4-quandrant electric machinery drive characteristic testing is done simply without regenerative power to power grid. 9. Acknowledgment This research is supported by Natural Scientific Research Innovation in Harbin Institute of Technology HIT. NSRIF. 2009042 and Scientific Research Foundation for Returned Scholars by Harbin Science and Technology .

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