Sensitivity Analysis and Design of a High Performance Permanent-Magnet-Assisted Synchronous Reluctance Motor for EV Application

This paper presents the utilization of differential flatness techniques from nonlinear control theory to permanent magnet assisted (PMa) synchronous reluctance motor (SynRM). The significant advantage of the proposed control approach is the potentiality to establish the behavior of the state variable system during the steady-state and transients operations as well. The mathematical models of PMa-SynRM are initially proved by the nonlinear case to show the flatness property. Then, the intelligent proportional-integral (iPI) is utilized as a control law to deal with some inevitable modeling errors and uncertainties for the torque and speed of the motor. Finally, a MicroLab Box dSPACE has been employed to implement the proposed control scheme. A small-scale test bench 1-KW relying on the PMa-SynRM has been designed and developed in the laboratory to approve the proposed control algorithm. The experimental results reflect that the proposed control effectively performs high performance during dynamic operating conditions for the inner torque loop control and outer speed loop control of the motor drive compared to the traditional PI control.

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Analytical design, electromagnetic field analysis and parametric sensitivity analysis of an external rotor permanent magnet-assisted synchronous reluctance motor

Electrical Engineering ◽

10.1007/s00202-020-01006-6 ◽

2020 ◽

Vol 102 (4) ◽

pp. 1947-1957

Author(s):

Hassan Moradi CheshmehBeigi ◽

Layegh Behroozi

Keyword(s):

Sensitivity Analysis ◽

Electromagnetic Field ◽

Permanent Magnet ◽

Field Analysis ◽

Analytical Design ◽

Parametric Sensitivity ◽

Parametric Sensitivity Analysis ◽

Synchronous Reluctance Motor ◽

Reluctance Motor ◽

External Rotor

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Performance Analysis of Synchronous Reluctance Motor with Limited Amount of Permanent Magnet

Energies ◽

10.3390/en12183504 ◽

2019 ◽

Vol 12 (18) ◽

pp. 3504 ◽

Cited By ~ 1

Author(s):

Ngo ◽

Hsieh

Keyword(s):

Performance Analysis ◽

Permanent Magnet ◽

Motor Performance ◽

High Performance ◽

Field Weakening ◽

Synchronous Reluctance Motor ◽

Reluctance Motor ◽

Rotor Flux ◽

Rotor Type

This paper analyzes the performance of a synchronous reluctance motor (SynRM) equipped with a limited amount of a permanent magnet (PM). This is conventionally implemented by inserting PMs in rotor flux barriers, and this is often called the PM-assisted SynRM (PMa-SynRM). However, common PMa-SynRMs could be vulnerable to irreversible demagnetization. Therefore, motor performance and PM demagnetization should be simultaneously considered, and this would require the PM to be properly arranged. In this paper, various rotor configurations are carefully studied and compared in order to maximize the motor performance, avoid irreversible demagnetization and achieve higher PM utilization. Moreover, the field weakening capability is investigated and improved by regulating armature excitation. A particular rotor type with flux intensification was found to possess higher PM utilization, lower demagnetization possibility with fairly high performance. Thus, suitable rotor configurations are recommended for certain applications.

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