Comprehensive Parameters Identification and Dynamic Model Validation of Interior-Mount Line-Start Permanent Magnet Synchronous Motors

Maraaba, Luqman S.; Al-Hamouz, Z.; Milhem, Abdulaziz S.; Twaha, Ssennoga

doi:10.3390/machines7010004

Cited by 13 publications

(7 citation statements)

References 32 publications

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“…The stator and rotor leakage inductances and the rotor resistances are obtained from the locked rotor test [46]. The end ring resistance (R er ) is calculated using the sizing equations by (33) [47], R er…”

Section: R DC N Turns L Av Aσ Cu S a (31)mentioning

confidence: 99%

Bond graph model of line-start permanent-magnet synchronous motors

et al. 2022

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The bond-graph (BG) enables to model multi-physics systems in the energy domains. This paper shows that BG models are an alternative, more intuitive and simpler to interpret, graphical tool as compared to existing dynamic models for performance prediction of the line-start permanent-magnet synchronous motors (LSPMSMs). It includes electrical, magnetic, and mechanical energy domains where the stator windings, rotor bars, and permanent magnets are the main components of the model. The dynamical equations of the proposed BG are extracted and solved using the MATLAB ordinary differential equation solver for a sample LSPMSM. The dynamics of the studied LSPMSM is investigated under two operating conditions (1) a healthy motor and (2) a motor with broken rotor bars. The simulation results are compared with the finite-element analysis (FEA) as the most accurate method to simulate the electric motor behaviour. It is shown that the proposed BG model accurately predicts the performance parameters of the motor such as current, torque, and speed under various operating conditions. In addition to the modelling validation, the transient behavior of the LSPMSM are discussed to describe the possible reasons for its behaviour during transient and steady-state operating conditions.

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Section: R DC N Turns L Av Aσ Cu S a (31)mentioning

confidence: 99%

Bond graph model of line-start permanent-magnet synchronous motors

et al. 2022

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“…The model of the LSPMSM in the dq0 reference frame rotating with the rotor angular speed is given as [1], [16]:…”

Section: Model Of Lspmsmmentioning

confidence: 99%

An observer design for the flux of line start permanent magnet synchronous motors

2022

Int. j. electr. comput. eng. syst. (Online)

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The permanent magnet flux is an important model parameter that determines the operation of the line start permanent magnet synchronous motor. It is degraded with operating time due to the permanent magnet demagnetization which is principally caused by the armature magnetic field interaction and operating temperature. This paper introduces an observer design study aimed at estimating the permanent magnet flux of the line start permanent magnet synchronous motor from the measurement of stator currents. Derived from the mathematical description in the dq0 reference frame, a model of the motor with state variables of stator currents, magnetic fluxes and rotor angular frequency is considered. Model analysis and with a new flux variable setting allow an estimation of the rotor flux through the open loops from the stator currents. The observer is then designed with a constant gain for the system with states of stator currents and permanent magnet flux. Simulation confirms the efficiency and robustness of the designed observer.

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“…Figure 1 shows the stator of LSPMSM with interturn fault in phase-a where i f is the fault current and R f is the fault resistance. The derivation details of the developed model and its parameters are available in [5] and [29] respectively. The stator and rotor voltage equations of the in qd0 reference frame are given as follows [5].…”

Section: Mathematical Model Of Lspmsmmentioning

confidence: 99%

An Accurate Tool for Detecting Stator Inter-Turn Fault in LSPMSM

2019

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This paper proposes an accurate diagnosing tool that can predict the stator inter-turn size in line start permanent magnetic synchronous motor (LSPMSM). The proposed diagnosing approach is developed based on an experimentally validated mathematical model of the motor under inter-turn fault. The developed model has been tested using MATLAB R under different loading and fault size conditions. Since the stator currents and voltages are easily accessible, it is decided to use them as the key signatures for developing the diagnostic tool. Several time and frequency-based features have been extracted using motor current and voltage waveforms under different loading and fault size conditions. The developed tool has been designed to correlate the extracted features with its corresponding size of stator inter-turn fault. Finally, testing of the developed diagnosis tool shows a high accuracy of 96% in detecting the size. Moreover, the proposed diagnostic tool is examined against motor parameter variations. The results confirm the robustness of the proposed approach where the accuracy is slightly affected under a wide range of motor parameter variations.

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Comprehensive Parameters Identification and Dynamic Model Validation of Interior-Mount Line-Start Permanent Magnet Synchronous Motors

Cited by 13 publications

References 32 publications

Bond graph model of line-start permanent-magnet synchronous motors

Bond graph model of line-start permanent-magnet synchronous motors

An observer design for the flux of line start permanent magnet synchronous motors

An Accurate Tool for Detecting Stator Inter-Turn Fault in LSPMSM

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