Permanent magnet synchronous motor (PMSM) is widely used in the field of motion control because of its high performance such as compact structure, high air-gap flux density, high power density, high torque to inertia ratio, and high efficiency [1,2,3].In the vector control of PMSM, the feedback signals of position sensor and current sensor are …
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Permanent magnets (PMs) produce magnetic fields and maintain the field even in the presence of an opposing magnetic field. Electrical machines using permanent magnets are more efficient than those without. Currently, all known strong magnets contain rare earth (RE) elements, and they are core components of a wide range of …
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Abstract— This paper presents an analytical method to design the high-efficiency surface permanent magnet synchronous motor (SPMSM) or generator (SPMSG). The air-gap …
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This article introduces a topology optimization method for a surface permanent magnet (SPM) motor with high torque density suitable for air mobility. The proposed method can be used to determine the material distribution and magnetization direction in PMs to maximize the torque density at a constant current. The torque …
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In this paper, the surface-mounted permanent magnet (SPM) and interior permanent magnet (IPM) machines are designed and compared for low voltage regulation applications. The principles of low voltage regulation designs in SPM and IPM machines are explained. Then, a SPM machine using halbach-array PMs and an IPM machine with …
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Design and Magnetic Noise Reduction of the Surface Permanent Magnet Synchronous Machine Using Complex Air-Gap Permeance Abstract: Nowadays, developing electric motorization for land vehicles is essential owing to the crucial need to save energy. This paper presents the development of a tool used in optimal acoustic and …
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PDF | On Sep 1, 2021, Lei Wang and others published A PI control strategy for Surface Permanent Magnet Synchronous Motor | Find, read and cite all the research you need on ResearchGate
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This paper is committed to show a well-ordered system used to design a permanent magnet synchronous generator (PMSG). The fundamental focus of this work is the generators which are in gearless configuration, and in the fragmentary or couple of kilowatts power range. A straight lumped-component based model is introduced, which …
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Surface permanent magnet motors fix magnets to the rotor's surface, and their mechanical strength is lower, limiting the motor's maximum safe mechanical speed. …
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This paper proposes an improved method for the estimation of position, velocity, and disturbance torque in a surface permanent-magnet (SPM) machine self-sensing (position sensorless) drive that uses high-frequency (HF) voltage injection. SPM machines traditionally do not have enough position-dependent signals because their …
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Analytical Prediction of Operational Inductances in Surface Permanent-Magnet Synchronous Machine Abstract: This paper describes theoretical work about operational inductances of surface PM synchronous machines. An analytical method is presented to predict the direct- and quadrature-axis operational inductances …
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Sensorless control of permanent magnet synchronous motors is nowadays used in many industrial, home and traction applications, as it allows the presence of a position sensor to be avoided with benefits for the cost and reliability of the drive. An estimation of the rotor position is required to perform the field-oriented control (FOC), …
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The main difference between a permanent magnet synchronous motor (PMSM) and an induction motor is in the rotor.Studies 1 show that the PMSM has an efficiency of approximately 2% more than a highly efficient (IE3) induction electric motor, provided that the stator has the same design, and the same variable frequency drive is used for …
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Permanent magnet Vernier motors (PMVMs) possess the advantage of high torque density for high-performance applications. However, the low power factor challenge makes it unacceptable for direct-drive applications. A lack of accurate modeling method based on the motor sizing law, i.e., air-gap flux density, linear current density, …
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Learn about the design and evaluation of permanent magnet motors for servo and drive applications. Compare different geometries, rating parameters, and performance …
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The noncontact operation of magnetic gears offers significant potential advantages over mechanical gears. Reluctance magnetic gears (RMGs) have been proposed as an alternative to surface permanent magnet gears (SPMGs) at high speeds. This paper explains the operating principles of RMGs and provides a thorough parametric …
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This paper presents a reluctance network model of surface permanent magnet motor taking into account the saturation effect. Its new features include the modelling of the air-gap by a simple air-gap length function, as well as the subdivision of the magnets and the rotor iron core which increase the accuracy of the saturation …
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HE et al. : ANALYSIS AND DESIGN OF SURFACE PERMANENT MAGNET SYNCHRONOUS MOTOR AND GENERATOR 95 . and pole number, and the least common multiplier (LCM) between the slot number and the pole number. The number of winding turns is related to the phase current the cooling methods. For the magnet …
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This paper investigates the influence of magnet height on the unbalanced magnetic force in rotationally asymmetric surface-mounted permanent magnet machines without rotor eccentricities. It shows that increasing the magnet height can effectively minimise the unbalanced magnetic force in rotationally asymmetric machines having pole number …
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The two motors (Interior and Surface-Mounted Permanent Magnet Synchronous Motor) used in this work are of specifications 3-phase, 2 KW, 50 Hz, 4 poles, 240 V each. The transient and steady state ...
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This article presents a novel surface-mounted permanent magnet motor (SPMM) with hybrid NdFeB-Alnico magnets to achieve low cost and low torque pulsation. Based on …
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A new five-phase, surface-inset, permanent-magnet (PM), brushless DC motor drive is proposed in this paper. The motor drive has advantages of both the PM brushless DC motor drive and the DC series motor drive. The originality is that the air-gap flux of the motor is generated by both the PM excitation and the specially controlled stator currents (two …
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Permanent magnet exited synchronous machines always show three significant portions of their losses: Iron losses within the magnetic circuit, power losses within the stator winding and finally eddy current losses within the permanent magnets. In particular, surface mounted magnets are directly exposed to asynchronous …
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A surface-mounted permanent magnet synchronous motor (SPMSM) is an electric motor with a simple magnetic circuit design, fast responsiveness, linear torque–current characteristics, speed–voltage characteristics, and constant operating speed. SPMSMs use only magnetic torque; however, interior PMSMs (IPMSMs) have …
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Depending on how magnets are attached to the rotor and the design of the rotor, permanent magnet synchronous motor can be classified into two types: Surface permanent magnet synchronous motor (SPMSM) Interior permanent magnet synchronous motor (IPMSM). SPMSM mounts all magnet pieces on the surface, and …
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The Surface Mount PMSM block implements a three-phase exterior permanent magnet synchronous motor (PMSM) with sinusoidal back electromotive force. The block uses the three-phase input voltages to …
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The efficient design optimization of electric machines for electric power steering (EPS) applications poses challenges in meeting demanding performance criteria, including high power density, efficiency, and low vibration. Traditional optimization approaches often fail to find a global solution or suffer from excessive computation time. …
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Reuland's Surface Permanent Magnet motors are available in water-cooled enclosures and in power ranges of up to 500 HP. OVERVIEW. ELECTRICAL FEATURES. Design Type: Surface Mount Permanent Magnet (SPM); Variable speed: Power: Up to 500 HP: Speed: Up to 30,000 rpm *Higher speeds available - consult factory: Voltage: Up to 600 …
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Magnetic gears transform power between low-torque, high-speed rotation and high-torque, low-speed rotation using magnetic fields instead of interlocking teeth. This paper uses an extensive parametric finite element analysis study to quantitatively compare the optimal performances of two of the most promising magnetic gear topologies, radial flux coaxial …
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The title of the article is severely misleading when you claim "Permanent Magnets Explained by Magnetic Surface Currents". This was my objection from the very beginning – the use of that language! Claiming that "permanent magnets explained by magnetic surface currents" means that the origin of this permanent magnet is this …
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