1. Low Cost Direct Drive for Electric Vehicles
Project Progress (01/10/ /03/2009)
Low Cost Direct Drive for Electric Vehicles
ITF/013/07AP (PolyU Ref ZS01)
Project Team

2. Acknowledgement Automotive Parts and Accessory
Systems R&D Centre Limited
Innovation and Technology Fund,
Innovation and Technology Commission
Silver Step
Holdings Limited
Euauto Technology
Limited
Ritech Engineering &
Supply Co., Ltd 2

3. Research Team

4. Milestones 1) Period from 01-10-2007 to 30-04-2008
Development of Position tracing drive: An electric drive for the in-wheel motor is developed (completed).
2) Period from to
Directional control and power regeneration: a working preliminary sample with the motor is developed (completed).
3) Period from to
Interface with the other electrical system: a working sample with the vehicle electrical system is delivered (completed).
4) Period from to
System integration: the motor and drive is tested on a vehicle (completed). 4

5. Overview of Fourth Progress Report
Test on both Central Control Unit and Two In-wheel SRM Drives
Test on In-wheel SRM Drives on Electric Vehicle
Exhibition of Project
Achievements 5

6. Test on CCU and In-wheel SRM Drives
Electric System Configuration of EV

7. Test on CCU and In-wheel SRM Drives
Central Control Unit – Embedded automation computer

8. Test on CCU and In-wheel SRM Drives
Central Control Unit – Interface circuit

9. Test on CCU and In-wheel SRM Drives
Central Control Unit – Monitor , have been updated the displays

10. Test on CCU and In-wheel SRM Drives
In-wheel SRM Drive - Controller

11. Test on CCU and In-wheel SRM Drives
In-wheel SRM Drive – Motor mounted on wheel

12. Test on CCU and In-wheel SRM Drives
Test on both CCU and Two In-wheel SRM Drives
CCU is used successfully to simultaneously control two in-wheel SRM drives.
Start, variable-speed operation and direction controlled by CCU have been accomplished.
Friendly interface from CCU can monitor
battery voltage
car velocity
motor speed reference
actual motor speeds of each in-wheel motors
drive direction
operation status of two in-wheel motors
drive status of the car.

13. Test on In-wheel SRM Drives on EV
Layout of Electric Vehicle
Rear wheels
Front wheels

14. Test on In-wheel SRM Drives on EV
Description on On-site Test

15. Test on In-wheel SRM Drives on EV
Implementation of Basic Functions
Various car loads/weights
Forward start
Backward start
Forward variable-velocity drive
Backward variable-velocity drive

16. Test on In-wheel SRM Drives on EV
Video of On-site Test

17. Exhibition of Project
Prof. CHENG presented the project to the visitors on 7 November 2008 (E & K Holdings Group Ltd)

18. Exhibition of Project
Dr. XUE introduced the project to the visitors on 7 November 2008 (Sumida Corporation)

19. Exhibition of Project
Prof. CHENG introduced the in-wheel SRM to Prof. Yingduo HAN from Tsinghua University (Academician of The Chinese Academy of Engineering) on 21 November 2008

20. Exhibition of Project
Prof. CHENG presented the in-wheel motor project to Prof. Gang WAN from Chinese Government (Minister of Science & Technology Ministry) on 12 December 2008

21. Exhibition of Project
Prof. CHENG described the project to Mr. Brett Sterkeg from Laservision Company on 17 December 2008

22. Exhibition of Project
Prof. CHENG presented the project to the visitors from五邑大学 on 17 December 2008

23. Exhibition of Project
Prof. CHENG presented the project to the visitors

24. Exhibition of Project
Prof. CHENG presented the project to the visitors

25. Exhibition of Project
Prof. CHENG presented the project to the visitors from MIT on 9 January 2009

26. Exhibition of Project
Prof. CHENG presented the project to the visitors from Roetec Company (鷹達科技有限公司) on 14 January 2009

27. Exhibition of Project
Prof. CHENG presented the project to the visitor from南美公司 on 14 January 2009

28. Exhibition of Project
Prof. CHENG introduced the project to the visitors from Goodwell Company on 3 March 2009

29. Exhibition of Project
Prof. Cheng described the project to the visitors from 源畅高科 on 5 March 2009

30. Exhibition of Project
Prof. CHENG presented the project to the visitor (SBS Australia TV) on 12 March 2009

31. Exhibition of Project
Prof. CHENG introduced the project to the visitors on 18 March 2009 (Transport Department, HKSAR)

32. Exhibition of Project
Prof. CHENG introduced the in-wheel SRM to the visitors from中国能源部、中国电工技术学会和中国动力工程学会 on 26 March 2009

33. Exhibition of Project
Prof. CHENG presented the project to the visitors from Chinese local government (Mayor and officers of Changchun City, China-mainland) on 30 March 2009

34. Exhibition of Project
Prof. CHENG presented the project to the visitor Ms.Fung (Student Standard News)on 31 March 2009

35. Achievements Papers presented at AUPEC’2008 conference (December 2008)
“Selection of Electric Motor Drives for Electric Vehicles”
“Evaluation of Torque Sharing Function for Torque Ripple Minimization of Switched Reluctance Motor Drives in Electric Vehicles”
“Investigation on Characteristics of Braking Operation of Switched Reluctance Motor Drives for Electric Vehicles”

36. Achievements
Papers accepted for presentation at PESA 2009 conference (May 2009)
“Study of Motoring Operation of In-wheel Switched Reluctance Motor Drives for Electric Vehicles”
“Experimental Results of In-wheel Switched Reluctance Motor Driving System”

37. Achievements Journal paper under review Journal paper to be submitted
“Multi-objective Optimization Design of In-wheel Switched Reluctance Motors in Electric Vehicles”
Journal paper to be submitted
“Optimal Control Method of Motoring Operation for Switched Reluctance Motor Drives in Electric Vehicles”

38. Achievements Paper submitted to IEEE COMPUMAG’2009
“Computation of Magnetic Characteristics of In-wheel SRMs by Using FEA in MEGA”

39. Achievements US patents applications submitted
“In-wheel Switched Reluctance Motor”
“Converter Circuit Based on Switch Modules and Bifilar Windings for Switched Reluctance Motor Drives”

40. Account (Used 100%) Budget Expenditure Balance Salary 2,646,000
Budget
Expenditure
Balance
Salary
2,646,000
2,774,946
-128,946
Direct cost
1,090,000
1,161,167
-71,167
Audit
10,000
Patent
90,000
Equipment
200,000
Sponsorship
470,000
Total
3,566,000
4,036,113
-113

41. Thank You
For Your Attention