The Application of Classical Direct Torque and Flux Control (DTFC) for Line-Start Permanent Magnet Synchronous and its Comparison with Permanent Magnet Synchronous Motor

Soreshjani, Mohsen Hosseinzadeh; Heidari, Reza; Ghafari, Ahmad

doi:10.5370/jeet.2014.9.6.1954

Cited by 6 publications

(7 citation statements)

References 7 publications

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“…In this regard, researchers have suggested the utilization of permanent magnet (PM) motors to enhance efficiency by minimizing core losses. PM machines offer the advantage of increased power-to-volume ratio [2]. Furthermore, permanent magnet synchronous motors (PMSMs) find extensive use in various industrial applications due to their high torque density and efficiency [3].…”

Section: Introductionmentioning

confidence: 99%

Magnetic Screen Effects on Torque Ripple and Efficiency of Dual Air-Gap Surface Permanent Magnet Synchronous Motor

Jeong,

Heidari,

Kang

et al. 2023

Energies

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Electric motors with a double air-gap structure offer increased power or torque density compared to their single air-gap counterparts, achievable through double-stator or double-rotor configurations. In a previous study, the authors proposed a double-stator permanent magnet synchronous motor (PMSM) with a magnetic screen placed in the middle of the rotor to isolate the outer and inner motors. However, the analysis of the magnetic screen was not provided in that study, as the design was arbitrarily chosen. This research focuses on the effects of the magnetic screen size and selects the appropriate dimensions for optimal motor performance. Finite element analysis (FEA) is employed to assess the electromagnetic characteristics of the screen. Subsequently, the motor is manufactured and tested. The results show that the chosen magnetic screen size contributes to significant efficiency improvements. In particular, the motor achieved an efficiency of 95.2% during the qualification test, surpassing the efficiency obtained in the previous study.

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Section: Introductionmentioning

confidence: 99%

Magnetic Screen Effects on Torque Ripple and Efficiency of Dual Air-Gap Surface Permanent Magnet Synchronous Motor

Jeong,

Heidari,

Kang

et al. 2023

Energies

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“…PMSMs also have a high torque-to-inertia ratio, which makes them well suited for applications requiring high acceleration rates. These advantages in terms of efficiency, power density, and torque density have made PMSMs a popular choice for vehicle traction applications [1,2].…”

Section: Introductionmentioning

confidence: 99%

Electromagnetic Characteristics of Dual-Air-Gap Surface Permanent Magnet Synchronous Motor

Jeong

Heidari

Kang³

et al. 2023

Machines

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This paper introduces a novel dual-air-gap surface permanent magnet synchronous motor (DAG-SPMSM) and investigates its electromagnetic characteristics. The motor comprises two stators (inner and outer) and a single rotor with permanent magnets on both sides (inner and outer). The magnets are arranged in a zig-zag configuration to isolate the inner and outer stator and rotor magnets. Additionally, a magnetic shield is incorporated into the rotor to further isolate the rotor magnetic flux, which results in a localized short flux path that can reduce core loss. The insertion of the magnetic shield also affects the flux path, reducing torque ripple. The electromagnetic characteristics, such as flux path, flux density, and torque, are analyzed using finite element analysis. The effectiveness of using a magnetic screen is also evaluated, and simple experiments are conducted to validate the observed characteristics of the proposed motor.

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“…V 1 (potential of the upper capacitor) and V 2 (potential of the lower capacitor) are equal to each other, four vectors are orthogonal each other as illustrated in Fig. 3 (1). For getting more detailed analysis and explanation, please refer to [8] or [10].…”

Section: Voltage Fluctuation In Fsimentioning

confidence: 99%

“…For generating balanced 3-phase voltages by FSIs, u and v pole voltages (v uo , v vo ) are formed by adding -v cs to each pole voltage as shown in Fig. 2 and expressed as (1). …”

Section: Introductionmentioning

confidence: 99%

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Analytic Model of Four-switch Inverter-fed Driving System for Wye or Delta-connected Motor with Current Ripple Reduction Scheme

Lee¹,

Jung²,

Heo³

et al. 2016

Journal of Electrical Engineering and Technology

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-This paper proposes an analytic model for four-switch inverter (FSI)-driven wye (Y) or delta (Δ)-connected motors with a current ripple reduction algorithm. FSIs employ four switches in controlling three-phase load instead of using six switches. They have split dc-link stage, and due to this inherent structure there exists the voltage difference between upper and lower capacitors, which results in distortion of the inverter output voltage. To study characteristics of FSIs, this paper presents an advanced simulation models of FSI-driven control system for 3-phase motor that can has a wire connection either Y or Δ. In addition, this paper introduces a current ripple reduction scheme that mitigates degradation of control performance due to the voltage difference between the dc-link capacitors. The validity of the proposed method and the analytic model is verified by simulations and experiments carried out with 1-HP induction machine with Y or Δ-connection

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The Application of Classical Direct Torque and Flux Control (DTFC) for Line-Start Permanent Magnet Synchronous and its Comparison with Permanent Magnet Synchronous Motor

Cited by 6 publications

References 7 publications

Magnetic Screen Effects on Torque Ripple and Efficiency of Dual Air-Gap Surface Permanent Magnet Synchronous Motor

Magnetic Screen Effects on Torque Ripple and Efficiency of Dual Air-Gap Surface Permanent Magnet Synchronous Motor

Electromagnetic Characteristics of Dual-Air-Gap Surface Permanent Magnet Synchronous Motor

Analytic Model of Four-switch Inverter-fed Driving System for Wye or Delta-connected Motor with Current Ripple Reduction Scheme

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