Speed Synchronous Control of Multiple Permanent Magnet Synchronous Motors Based on an Improved Cross-Coupling Structure

Wei Chen, Jiaojiao Liang and Tingna Shi
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Wei Chen: School of Electrical and Information Engineering, Tianjin University, Tianjin 300072, China
Jiaojiao Liang: School of Electrical and Information Engineering, Tianjin University, Tianjin 300072, China
Tingna Shi: School of Electrical and Information Engineering, Tianjin University, Tianjin 300072, China

Energies, 2018, vol. 11, issue 2, 1-16

Abstract: Regarding the shortcomings of the cross-coupling control structure during the start-up of a multi-motor with load—namely, a large synchronization error and a long start-up time—this paper proposes a fuzzy self-adjusting cross-coupling control structure. This structure combines a fuzzy self-adjusting filter and an advanced synchronization compensator. The fuzzy self-adjusting filter adjusts the “softened speed”, a newly established concept, so that each motor follows the trajectory of the softened speed during start-up, thus effectively reducing the synchronization error of the starting process. The advanced synchronization compensator is added to shorten the adjusting time of the motors. In addition, this paper analyzes the synchronization performance of the structure when the steady state is interrupted by a sudden step of load. Finally, this paper establishes an experimental platform for a synchronous speed control system for a permanent magnet synchronous motor, and verifies the effectiveness of the proposed structure and the correctness of the theoretical analysis through performing experiments.

Keywords: fuzzy self-adjusting filter model; softened speed; advanced synchronization compensator; cross-coupling control; speed synchronous control (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2018
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (3)

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