Design and Analysis of a 4-kW Two-Stack Coreless Axial Flux Permanent Magnet Synchronous Machine for Low-Speed Applications

Khan, Sahib; Bukhari, Syed Sabir Hussain; Ro, Jong‐Suk

doi:10.1109/access.2019.2957046

Cited by 26 publications

(26 citation statements)

References 38 publications

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“…Also, in Fig. 4(a) the current control is done using hysteresis control for which current references The three-phase input armature current containing fundamental-harmonic and third-harmonic current components can be formulated as (1), where I1 is the magnitude of the fundamental-harmonic of the phase currents and I3 is the magnitude of the third-harmonic current component.…”

Section: Proposed Inverter Topologymentioning

confidence: 99%

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Cost-Effective Single-Inverter-Controlled Brushless Technique for Wound Rotor Synchronous Machines

et al. 2020

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Section: Proposed Inverter Topologymentioning

confidence: 99%

“…Permanent magnet (PM) machines offer numerous advantages over wound field synchronous machines (WFSMs). One such advantage is their higher efficiency due to the lack of rotor field winding and reduced copper losses [1]- [3]. Furthermore, their torque density, power density, and power factor are higher than those of WFSMs.…”

Section: Introductionmentioning

confidence: 99%

Cost-Effective Single-Inverter-Controlled Brushless Technique for Wound Rotor Synchronous Machines

et al. 2020

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“…I NDUCTION machines are widely used in industrial applications, such as conveyor belts and electric motors, because they are relatively robust, cost-effective, and simple in design. With the progressive development of electric vehicles and renewable wind energy utilizationnowadays, induction motor (IM) control design is increasingly important in both research and industry, as the complex, nonlinear models of these motors make precise control difficult [1], [2]. Direct torque control (DTC) schemes, also known as bang-band controllers, were initially proposed for the IM by Takahashi and Noguchi in 1986 [3], and by Depenbrock in 1988 [4], and are used extensively for high-performance AC drives for their simple decoupled topology.…”

Section: Introductionmentioning

confidence: 99%

“…Direct torque control (DTC) schemes, also known as bang-band controllers, were initially proposed for the IM by Takahashi and Noguchi in 1986 [3], and by Depenbrock in 1988 [4], and are used extensively for high-performance AC drives for their simple decoupled topology. Two cascaded loops are used in these systems: (1) an inner loop, which generates a reference stator flux and torque, and (2) an outer loop, which is implemented through lookup-table-based hysteresis control using the references generated by the inner loop. The DTC is one of the most robust control technique owing to its insensitivity to control parameters [5].…”

Section: Introductionmentioning

confidence: 99%

Integral Super Twisting Sliding Mode Based Sensorless Predictive Torque Control of Induction Motor

et al. 2020

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In the direct torque control (DTC) of induction motor (IM) drive systems utilizing model predictive torque control (MPTC) in the inner loop and classical proportional integral (PI) control in the outer loop is prone to weaknesses, such as uncertainties, external disturbances, parameter variations, and nonlinear dynamics. A high-performance control system for speed and torque is required to guarantee a smooth and robust control architecture that can withstand such unpredictable effects. In this study, we propose an integral super twisting sliding mode control (ISTSMC) to address the shortcomings of the classical PI used in the outer loop of DTC drive systems. A sliding mode speed observer is also designed and utilized to overcome problems associated with mechanical sensors. The robustness of the proposed control strategy and fast dynamic speed response are compared favorably with a benchmark PI controller and conventional sliding mode control (SMC). The ability of the proposed system to regulate both speed and torque was evaluated through simulations, under various fault perturbations, parameter variations, and load disturbances, conducted in MATLAB/ Simulink. Various performance indices were used to demonstrate the superior performance of the proposed strategy compared to a benchmark PI system and conventional SMC-based MPTC approaches.

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“…PM MC analysis is significantly more complicated than solenoid MC's owing to the mutual interaction between the PM and coil magnetic fields. Computationally expensive 3D finite element analysis (FEA) is commonly employed for electromagnetic analysis and design [14]. PM MC FEA leads to extremely long analysis times, especially when numerous designs must be considered.…”

Section: Introductionmentioning

confidence: 99%

Analysis of Nonlinear Dynamics of Permanent Magnet Magnetic Contactor via Novel Computationally Efficient Analytical Method Considering Stray and Leakage Fluxes

Gabdullin

2020

IEEE Access

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Improving the efficiency and end-use of energy distribution can significantly reduce global energy consumption. As the magnetic contactor (MC) is the most common switchgear used for control in most grids, minimizing its energy consumption has motivated the development of a permanent magnet (PM) MC that exhibits several advantages over conventional solenoid MCs. However, analyzing the transient magnetic behavior of a PM MC requires computationally expensive 3D finite element analysis (FEA). Herein, a modified version of a recently proposed nonlinear transient path energy method (NT-PEM) is proposed as an analytical alternative to FEA. Within the modification to NT-PEM, a new topology for nonlinear dynamic magnetic equivalent circuit (ND-MEC) is proposed with a methodology for accurate evaluation of stray and leakage flux path parameters. For coil leakage reluctances, a novel path function based on a conchoid's arc is proposed. For stray reluctances, a path function based on the average length of an elliptical arc is proposed. This path function, along with the proposed permeability correction for nonlinear core reluctance calculation routines, led to a four-fold reduction in NT-PEM analysis time from the original version of the proposed method. The feasibility of the proposed NT-PEM is verified via comparison with commercial 3D FEA and experimental data obtained from a PM MC with a single coil and single PM. NT-PEM and FEA equally displayed accurate results, indicating that NT-PEM is a promising computationally efficient alternative to FEA owing to significantly reduced analysis time, which is essential when considering numerous designs and design parameters.

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Design and Analysis of a 4-kW Two-Stack Coreless Axial Flux Permanent Magnet Synchronous Machine for Low-Speed Applications

Cited by 26 publications

References 38 publications

Cost-Effective Single-Inverter-Controlled Brushless Technique for Wound Rotor Synchronous Machines

Cost-Effective Single-Inverter-Controlled Brushless Technique for Wound Rotor Synchronous Machines

Integral Super Twisting Sliding Mode Based Sensorless Predictive Torque Control of Induction Motor

Analysis of Nonlinear Dynamics of Permanent Magnet Magnetic Contactor via Novel Computationally Efficient Analytical Method Considering Stray and Leakage Fluxes

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