Design and analysis of consequent‐pole line start permanent magnet synchronous motor

Ghoroghchian, Fakhrossadat; Aliabad, Aliakbar Damaki; Amiri, Ebrahim

doi:10.1049/iet-epa.2019.0524

Cited by 11 publications

(3 citation statements)

References 22 publications

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“…It is worth mentioning that the CP structure has an extremely high utilisation of PM material, and the consequent-pole permanent magnet (CP-PM) motor requires much less RE material than the traditional PM motor with the same output torque. The consequent-pole line-start permanent magnet motor (CPLSPM) is proposed by combining LSPM with the low magnetic properties of the CP structure [15][16][17][18][19].…”

Section: Introductionmentioning

confidence: 99%

Design and analysis of a less‐magnets consequent‐pole line‐start permanent magnet motor with low cogging torque

Wu,

Wang,

Bao

et al. 2024

IET Electric Power Appl

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The paper suggests a design and optimisation approach for a consequent‐pole line‐start permanent magnet motor (CPLSPM) with flexible pole arc coefficients and high utilisation of rare‐earth (RE) materials, without the need for a variable frequency drive. The presence of dual‐sided slots and adjustable pole arc coefficient sets CPLSPM apart from other types of motors, making the analysis of its cogging torque more complex. Taking into account the double‐sided slotted and flexible adjustable pole arc coefficient, a cogging torque and airgap flux density model was established, and the influence of the pole arc coefficient on the characteristics of the cogging torque and airgap flux density of CPLSPM was analysed. The authors conduct multidimensional optimisation considering the coupling of multiple parameters to obtain a CPLSPM with minimal RE material usage, low cogging torque and excellent start‐up and steady‐state performance. Finite element simulation data are presented to validate the factors affecting the cogging torque and the feasibility of the proposed less‐magnetic CPLSPM design. Finally, a prototype of a 750 rpm/2.2 kW CPLSPM is built, and performance testing is carried out for comparison, and applied to submersible mixers.

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Section: Introductionmentioning

confidence: 99%

Design and analysis of a less‐magnets consequent‐pole line‐start permanent magnet motor with low cogging torque

Wu,

Wang,

Bao

et al. 2024

IET Electric Power Appl

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“…Permanent magnet synchronous motor (PMSM) has the advantages of small size, high efficiency and good reliability and has been widely used in the field of modern industrial control (Gao et al , 2020; Ghoroghchian et al , 2020; Zhang et al , 2021). The traditional PMSM speed control system generally adopts PI control (Gu et al , 2021; Raj and Kannan, 2020; Jiang et al , 2021a).…”

Section: Introductionmentioning

confidence: 99%

Sliding mode speed control of permanent magnet synchronous motor based on improved reaching law

Zou

Ding²,

Li³

2022

COMPEL

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Purpose This paper aims to present a sliding mode control method based on disturbance observer (DO) for improving the reaching law of permanent magnet synchronous motor (PMSM). Design/methodology/approach Aiming at the insufficiency of the traditional exponential reaching law used in sliding mode variable structure control, an exponential reaching law related to the speed error is proposed. The improved exponential reaching law can adaptively adjust the size of the constant velocity term in the reaching law according to the size of the speed error, so as to adaptively adjust the speed of the system approaching the sliding mode surface to overcome the control deviation and improve the dynamic and steady state performance. To improve the anti-interference ability of the system, a DO is proposed to observe the external disturbance of the system, and the observed value is used to compensate the system. The stability of the system is analyzed by Lyapunov theorem. The effectiveness of this method is proved by simulation and experiment. Findings Simulation and experiment show that the proposed method has the advantages of fast response and strong anti-interference ability. Research limitations/implications The proposed method cannot observe the disturbance caused by the change of internal parameters of the system. Originality/value A sliding mode control method for PMSM is proposed, which has good control performance. The proposed method can effectively suppress chattering, ensure fast response speed and have strong anti-interference ability. The effectiveness of the algorithm is verified by simulation and experiment.

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“…Despite the merits as mentioned above, the braking torque resulting from interaction between stator-winding currents and PM flux linkage [9,10] remains an issue for the starting and synchronizing performance of an LSPMSM [11,12]. The braking torque is governed by motor parameters including noload back-EMF, stator resistance, and d-/q-axis synchronous reactance [13].…”

Section: Introductionmentioning

confidence: 99%

A semi‐numerical method to assess start and synchronization performance of a line‐start permanent magnet synchronous motor equipped with hybrid rotor

Yan

Yang

Wang

2021

IET Electric Power Appl

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The torque‐slip characteristic curve (TSCC) applicable to quantitative assessment on the starting and synchronizing performance of a line‐start permanent magnet synchronous motor (LSPMSM) equipped with a hybrid rotor is determined herein. The TSCC determination starts with separating the hybrid‐rotor LSPMSM into an induction motor and a permanent magnet (PM) motor in which the former dominates part of the TSCC and the latter governs the rest. Then, the electromagnetic torques of the two subsidiary motors are calculated by means of a two‐dimensional (2‐D) semi‐numerical technique combining the subdomain method and the finite difference method (FDM). Finally, the TSCC of the hybrid‐rotor LSPMSM is acquired through adding the average components of the calculated electromagnetic torques of the subsidiary motors. Accuracy of the obtained TSCC is validated by results from the finite‐element analysis (FEA) and prototype test.

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Design and analysis of consequent‐pole line start permanent magnet synchronous motor

Cited by 11 publications

References 22 publications

Design and analysis of a less‐magnets consequent‐pole line‐start permanent magnet motor with low cogging torque

Design and analysis of a less‐magnets consequent‐pole line‐start permanent magnet motor with low cogging torque

Sliding mode speed control of permanent magnet synchronous motor based on improved reaching law

A semi‐numerical method to assess start and synchronization performance of a line‐start permanent magnet synchronous motor equipped with hybrid rotor

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