Analysis of Parameter Matching on the Steady-State Characteristics of Permanent Magnet-Assisted Synchronous Reluctance Motors under Vector Control

In this paper, the impact of parameter matching on the steady-state performance of permanent magnet-assisted synchronous reluctance motors (PMaSynRM) under vector control is analyzed and discussed. First, based on the mathematical model of motors under the maximum torque per ampere (MTPA) control st...

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Bibliographic Details
Published in:Actuators 2024-06, Vol.13 (6), p.198
Main Authors: Lan, Yu-Hua, Wan, Wen-Jie, Wang, Jin
Format: Article
Language:English
Subjects:
Analysis
Back electromotive force
Cost control
Cost reduction
Design
Directional control
Efficiency
Electric motors
Electromotive forces
IE5
Magnets, Permanent
Matching
Mathematical models
Optimization
Parameters
permanent magnet-assisted synchronous reluctance motor
Permanent magnets
Research methodology
Saliency ratio
Steady state
Torque
vector control
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Summary:In this paper, the impact of parameter matching on the steady-state performance of permanent magnet-assisted synchronous reluctance motors (PMaSynRM) under vector control is analyzed and discussed. First, based on the mathematical model of motors under the maximum torque per ampere (MTPA) control strategy, an analysis is conducted concerning two main parameters, i.e., the matching relationship between the back electromotive force (back-EMF) and the saliency ratio. The impact of these two parameters on the operational status of the motor is investigated. Then, the motor’s voltage operating conditions are examined, and the operating curve under minimum voltage is derived. Furthermore, in the overvoltage region under the MTPA control strategy, the operation of the motor under the maximum torque per voltage (MTPV) control strategy is explored. This analysis illuminated the patterns of influence exerted by the back-EMF and the saliency ratio on the motor’s voltage operating condition. Between these two control strategies, there remains scope for the motor to operate at its limits. An enhanced understanding of the effects of the back-EMF and saliency ratio within this range on motor performance was achieved, resulting in the optimal matching curve for the back-EMF and saliency ratio. Finally, a 45 kW PMaSynRM was designed, prototyped, and tested to validate the correctness of the design techniques, with the motor achieving IE5 efficiency.
ISSN:2076-0825
2076-0825
DOI:10.3390/act13060198