KIEE - The Transactions of the Korean Institute of Electrical Engineers

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The Transactions of the Korean Institute of Electrical Engineers

The Transactions of the Korean Institute of Electrical Engineers

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Title	Interpolation Error Compensation Method for PMSM Torque Control
Authors	이정효(Jung-Hyo Lee)
DOI	http://doi.org/10.5370/KIEE.2018.67.3.391
Page	pp.391-397
ISSN	1975-8359
Keywords	2D-Interpolation ; PMSM ; Torque Control ; Look-up table
Abstract	This paper proposes a interpolation error compensation method for PMSM torque control. In PMSM torque control, two dimensions look-up table(2D-LUT) is used for current reference generation due to its stable and robust torque control performance. However, the stored data in 2D-LUT is discreet, it is impossible to store all over the operation range. To reduce the reference generation error in this region, the 2D-Interpolation method is conventionally used, however, this method still remains the error affected by the number of stored data. Besides, in the case stored by fixed unit, this error is increased in field weakening region because of the small number of stored data. In this paper, analyzing the cause of this interpolation error, and compensating the method to reduce this error. Proposed method is verified by the simulation and experiment.

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