# Performance of SR Drive for Hydraulic Pump

• Lee, Sang-Hun (Advanced Electric Machinery & Power Electronics Center, Kyungsung University) ;
• Lee, Dong-Hee (Dept. of Electrical and Mechatronics Engineering, Kyungsung University) ;
• An, Young-Joo (Dept. of Electrical and Control Engineering, PuKyong National University) ;
• Ahn, Jin-Woo (Dept. of Electrical and Mechatronics Engineering, Kyungsung University)
• Published : 2007.03.01

#### Abstract

This paper proposes a hydraulic pump system that uses a variable speed SR drive and constant capacity pump. For the design of the SRM (Switched Reluctance Motor) and digital controller, base speed and rating torque are determined from the mechanical specifications of the hydraulic pump. In order to minimize the power consumption during the maintaining of preset oil-pressure, the pressure control system changes the maximum oil-pressure band and flow rate according to the motor speed. The DSP control system adjusts the oil-pressure and the speed of the SRM from the pressure sensor signal, due to conservation of power consumption by the hydraulic pump. A 2.2Kw, 12/8 pole SR motor and DSP based digital controller are designed and tested with experimental set-up. The test results indicate that the system has some good features such as high efficiency and rapid response characteristics.

#### References

1. Jame L. Johnson et al., Introduction to Fluid Power, Science & Technology, 2004
2. C. S. Kim, M. G. Kim, H. G. Lee and J. W. Ahn, 'Development of SRM and Drive System for Small Pallet Truck' Annual Proc. of KIEE, pp. 732-734, 2000
3. C. S. Kim, S. G. Oh, J. W. Ahn and Y. M. Hwang, 'The Design and the Characteristics of SRM Drive for Low Speed Vehicle' Annual Proc. of KIEE, pp. 871-873, 2001
4. Aly Badawy, Jeff Zuraski, Farhad Bolourchi and Ashok Chandy, 'Modeling and Analysis of an Electric Power Steering System' Steering and Suspension Technology Symposium, 1999
5. P. J. Lawrenson, J.M. Stephenson and P. T. Blenkinsop et al., 'Variable-speed Switched Reluctance Motors', IEE Proc. B, vol. 127, no. 4, pp. 253-265, 1980
6. H. Chen and G. Xie, 'A Switched Reluctance Motor Drive System for Storage Battery Electric Vehicle in Coal Mine', in Proceedings of the 5th IFAC Symposium on Low Cost Automation, 1998, pp. 90-95
7. D.E. Cameron, J.H. Lang and S.D. Umans, 'The Origin and Reduction of Acoustic Noise in Doubly Salient Variable-Reluctance Motors', IEEE Trans. Industry Applications, vol. IA-28, no. 6, pp. 1250-1255, Dec, 1992
8. C. Pollock, C.Y. Wu; 'Acoustic Noise Cancellation Techniques for Switched Reluctance Drives', IEEE IAS. Annual Meeting, vol. 1, pp. 448-455, 1995
9. C.Y. Wu and C. Pollock; 'Analysis and Reduction of Vibration and Acoustic Noise in the Switched Reluctance Drive,' IEEE Trans. on IA, Vol. 31, No. 1, pp. 91-98, 1995
10. Texas Instruments 'TMS320F243/F241/C242 DSP Controllers Reference Guide - System and Peripherals', January, 2000
11. Aly A. Badawy, Farhad Boloruchi, Steven K. Gaut, 'E-Steer $^{TM}$ Redefines Steering Technology', Automotive Engineering, Automotive Systems Review of Technical Achievements, pp. 15-18, SAE International Magazine, September, 1997

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