Surface Permanent Magnet
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- Surface Permanent Magnet
A PM motor can be separated into two main categories: surface permanent magnet motors (SPM) and interior permanent magnet motors (IPM) . Neither motor design type contains rotor bars. Both types generate magnetic …
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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 the analysis of the effects of stator magnetomotive force (MMF) on rotor magnets, the Alnico magnets can be properly configured to avoid demagnetization. To reduce torque pulsation, three models with …
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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 volts:
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In this paper a comparative analysis is reported between Surface Mounted Permanent Magnet (SMPM) and Interior Permanent Magnet (IPM) Synchronous Motor for low Power rating application using ANSYS Software. In this study, a 0.55Kw, 220V rated Permanent Magnet Synchronous Motor (PMSM) with two different structures is considered.
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This paper presents some calculated and measured results of a surface permanent magnet (SPM) magnetic gear. First, the torque characteristics, iron loss in the core, and eddy current loss in permanent magnets of the magnetic gear are calculated by three-dimensional finite element analysis (3D-FEA). Next, no-load and load test results of the ...
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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 ...
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This paper presents an analytical method to design the high-efficiency surface permanent magnet synchronous motor (SPMSM) or generator (SPMSG). The air-gap and permanent magnet size can be approximately determined based on our mathematics model, which is the most important part of SPMSM design. From our method, we can know that …
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The field produced by the magnets in the slotted air gap of an unloaded machine is computed from the slotless air gap field solution and complex relative air gap permeance ().Zhu et al. derived the closed form solution of slotless air gap field in detail in [] and the complex relative permeance was introduced for an inner rotor machine using conformal mapping by Zarko et al. …
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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 components of the air-gap field …
WhatsApp: +86 18221755073We present a target-field approach to analytically design magnetic fields using permanent magnets. We assume that their magnetization is bound to a two-dimensional …
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For high-speed permanent magnet machines (HSPMMs), two different rotor structures are widely used: surface-mounted permanent magnet (SPM) and interior permanent magnet (IPM). The two different rotor structures have a large impact on the comprehensive performance in multiple physical fields of HSPMMs, including mechanical stress, …
WhatsApp: +86 18221755073Abstract: This paper presents an analytical method to design the high-efficiency surface permanent magnet synchronous motor (SPMSM) or generator (SPMSG). The air-gap and …
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A novel method for no-load magnetic field analysis of saturated surface permanent-magnet machines using conformal mapping and magnetic equivalent circuits. IEEE Trans. Energy Convers. 31 (2), 740 ...
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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 U+V rotor topology are …
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Permanent magnet synchronous motors are widely used in electric vehicle systems due to their high efficiency and high torque density. To have a good dynamic and transient response, an...
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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 needed to …
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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 electromechanical ...
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Nowadays, high-speed surface-mounted permanent magnet synchronous machines (SPMSMs) are becoming more and more common due to their simple structure, high-power density and high efficiency [1–3]. The rare-earth permanent magnets (PMs) are widely applied in the high-speed SPMSMs owing to their high saturation intensity and coercive force [4, 5].
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The differences between surface permanent magnet motors and interior permanent magnet motors are the topics that we'll discuss in this article. Permanent magnet motors (PM) are a type of AC motor that uses magnets …
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Aiming to successfully meet the requirements of a large output torque and a wide range of flux weakening speed expansion in permanent magnet synchronous motors (PMSM) for electric vehicles, a novel surface insert permanent magnet synchronous motor (SIPMSM) is developed. The method of notching auxiliary slots between the magnetic poles in the rotor and unequal …
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This paper addresses the considerations and challenges of the rotor design of high-speed surface permanent magnet machines with special attention given to the rotor sleeve design including thickness and material. …
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This paper provides a thorough, parametric comparison of axial and radial flux coaxial magnetic gears with surface-mounted permanent magnets. While both topologies share similar operating principles and can achieve comparable shear stresses, they exhibit different scaling trends with respect to key design parameters. Both topologies' volumetric torque densities (VTDs) …
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COMPEL - The international journal for computation and mathematics in electrical and electronic engineering, 2019. Purpose The purpose of this paper is to present an improved winding function theory (IWFT) for performance analysis of …
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This paper presents a design method of the basic model of high-speed surface-mounted permanent magnet synchronous motor (SPMSM) comprehensively considering the mechanical and electromagnetic properties based on the subdomain method. In the rotor design stage, the mechanical stresses of the permanent magnet (PM) and retaining sleeve are …
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Abstract: Permanent-magnet (PM) motors have gained a significant portion of market for Electric Vehicle application due to its high efficiency and torque density. This paper presents the comparison of two such PM motors used in Electric Vehicle application – Surface Mounted Permanent Magnet (SPM) and Interior Permanent Magnet (IPM) brushless DC motors of …
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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 comparison between RMGs and …
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This chapter discusses surface-permanent-magnet (SPM) ac motors. While the SPM ac machine is widely used in industrial applications, its sibling, the interior-permanent-magnet (IPM) machine, is the machine of choice for electric powertrains. The chapter provides the necessary background for the investigation of the IPM machine.
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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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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), which is the most common control …
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Electric machines with permanent magnet rotors are becoming increasingly popular due to the high power density that they offer relative to other configurations. Where the …
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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 high power densities because they …
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This paper presents an advanced sensorless control technique for high-speed surface permanent magnet synchronous motors (SPMSMs) under low switching-to-fundamental frequency ratios. The algorithm proposed aims to enhance the dynamic performance of the system while simultaneously ensuring robust steady-state characteristics. The paper begins by addressing the challenges …
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Description. 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 regulate the individual phase currents, allowing control of the motor torque or speed.
WhatsApp: +86 18221755073magnets in the wind generation and electric traction industries. • The uncertainty of its price and the high percentage of the cost of the magnets on the motors that use them. These drawbacks have favored the tendency to research electric motors with less mass of permanent magnets or even without permanent magnets (PM-less) [8-13], such
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The Nd 2 Fe 14 B-type permanent magnets have the highest energy product up to 60 MGOe (477.5 kJ/m 3) (Matsuura, 2006)pared to the Nd 2 Fe 14 B, the SmCo-based permanent magnets show high Curie temperature (up to 800 °C) and moderate energy products ~ 30 MGOe (238.7 kJ/m 3) (Niarchos et al., 2015).These two types of rare-earth permanent magnets are …
WhatsApp: +86 18221755073Permanent 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, and motor geometry …
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