New variable-reluctance resolver for rotor-position sensing

Resolvers are often used to provide accurate absolute position information in high-performance motor systems. In this paper a new variable reluctance (VR) resolver with much simplified structure is presented for integration with motor systems. The new VR resolver directly utilizes the salient pole effects with only simple winding patterns on the stator. Sample tests show that the precision can meet the requirement of the drive of brushless motors, and the position errors are mainly caused by the 3rd harmonics and the noneffective EMFs existing in the signals, which can be eliminated further.

[1]  Luca Solero,et al.  Sinusoidal brushless drive with low-cost linear Hall effect position sensors , 2001, 2001 IEEE 32nd Annual Power Electronics Specialists Conference (IEEE Cat. No.01CH37230).

[2]  D. C. Hanselman,et al.  Techniques for improving resolver-to-digital conversion accuracy , 1991 .

[3]  T. Sebastian,et al.  Near-zero speed performance enhancement of PM synchronous machines assisted by low-cost Hall effect sensors , 1998, APEC '98 Thirteenth Annual Applied Power Electronics Conference and Exposition.

[4]  Hans-Peter Nee,et al.  A general algorithm for speed and position estimation of AC motors , 2000, IEEE Trans. Ind. Electron..

[5]  C. Attaianese,et al.  A low cost resolver-to-digital converter , 2001, IEMDC 2001. IEEE International Electric Machines and Drives Conference (Cat. No.01EX485).

[6]  D. C. Hanselman,et al.  Variable-reluctance resolver design guidelines , 1989, 15th Annual Conference of IEEE Industrial Electronics Society.