Permeance Analysis and Calculation of the Double-Radial Rare-Earth Permanent Magnet Voltage-Stabilizing Generation Device

Zhang, Xueyi; Du, Qinjun; Ma, Shilun; Geng, Huihui; Hu, Wenrong; Li, Zhiwu; Liu, Guoqiang

doi:10.1109/access.2018.2792448

Cited by 19 publications

(15 citation statements)

References 24 publications

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“…where, B r (θ) is the distribution of the remanence of permanent magnet along the circumferential direction; δ(θ, α) is the distribution of effective air-gap length along the circumferential direction; h m (θ) is the distribution of the direction of magnetization along the circumferential direction at the minimum thickness of permanent magnet. Substituting (2) into the E, we obtain…”

Section: Infulence On Cogging Torquementioning

confidence: 99%

“…As the core component of electric vehicle, the performance of the driving motor directly affects the performance of electric vehicles. The research and development of high-performance electric vehicle drive motors has become one of the important factors restricting the development of electric vehicles [2]. The main types of drive motors for electric vehicles are brushless DC motors, induction motors, switched reluctance motors and permanent magnet synchronous motors (PMSM).…”

Section: Introductionmentioning

confidence: 99%

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A Novel Surface Inset Permanent Magnet Synchronous Motor for Electric Vehicles

Yang

et al. 2020

Symmetry

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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 thickness magnetic poles is proposed to improve the performance of the motor. By analyzing the magnetic circuit characteristics of the novel SIPMSM, the notching auxiliary slots between the adjacent magnetic poles can affect the q-axis inductance, and the shape of magnetic pole effects the d-axis inductance of the motor. The combined action of the two factors not only weakens the cogging torque, but also improves the flux weakening capability of the motor. In this paper, the response surface methodology (RSM) is used to establish a mathematical model of the relationship between the structural parameters of the motor and the optimization objectives, and the optimal design of the motor is completed by solving the mathematical model. Experimental validation has been conducted to show the correctness and effectiveness of the proposed SIPMSM.

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Section: Infulence On Cogging Torquementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

A Novel Surface Inset Permanent Magnet Synchronous Motor for Electric Vehicles

Yang

et al. 2020

Symmetry

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“…Given this, various topologies of motors have been proposed. The permanent magnet synchronous motor (PMSM) has the advantage of high torque density, high power density, and high efficiency [1][2][3], but it is difficult to control the magnetic field [4]. The magnetic field of the electrical excitation motor (EEM) can be controlled easily, but the presence of the excitation winding increases the excitation loss, which leads to decreased efficiency.…”

Section: Introductionmentioning

confidence: 99%

Analysis of Magnetic Field and Electromagnetic Performance of a New Hybrid Excitation Synchronous Motor with dual-V type Magnets

Zhang

Yin

et al. 2020

Energies

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Due to the increasing energy crisis and environmental pollution, the development of drive motors for new energy vehicles (NEVs) has become the focus of popular attention. To improve the sine of the air-gap flux density and flux regulation capacity of drive motors, a new hybrid excitation synchronous motor (HESM) has been proposed. The HESM adopts a salient pole rotor with built-in dual-V permanent magnets (PMs), non-arc pole shoes and excitation windings. The fundamental topology, operating principle and analytical model for a magnetic field are presented. In the analytical model, the rotor magnetomotive force (MMF) is derived based on the minimum reluctance principle, and the permeance function considering a non-uniform air-gap is calculated using the magnetic equivalent circuit (MEC) method. Besides, the electromagnetic performance including the air-gap magnetic field and flux regulation capacity is analyzed by the finite element method (FEM). The simulation results of the air-gap magnetic field are consistent with the analytical results. The experiment and simulation results of the performance show that the flux waveform is sinusoidal-shaped and the air-gap flux can be adjusted effectively by changing the excitation current. This study provides design methods and theoretical analysis references for this type of HESM.

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“…The overall structure of the machine is complicated and the cost is high [15]. Permanent magnet synchronous generator also has shortcomings, such as difficulty in voltage regulation and flux-weaking in failure condition, especially at high-speed [16,17]. When the switched reluctance machine is used as a generator, the voltage control is more complicated than the wound field machine in controlling the phase current, and a larger filter circuit is needed [18,19].…”

Section: Introductionmentioning

confidence: 99%

Topology Comparison Study of Five-Phase Wound-Field Doubly Salient Fault Tolerant Generators

Shi

Zhang

2019

Applied Sciences

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To present the characteristics of pole number and pole shape of the core, the five-phase wound-field doubly salient generators (WFDSGs) with symmetric phase inductance are studied and optimised in this paper, considering the split ratio, slot fill factor and core fringing effect. Based on the principle and structure of the five-phase WFDSGs, the winding induced electro-motive force under different number of poles is theoretically analysed. The constraints for parameter optimisation design including slot fill factor, split ratio and magnetic density characteristic are given. The finite element models of 30/24-pole and 20/16-pole WFDSG are established, and the comparative simulation analysis is carried out. It is pointed out that when the inner and outer diameters of the stator and rotor, the axial length and the maximum magnetic density are constant, the induction electromotive forces of the WFDSGs with different pole numbers and same phase coil number are same. Considering the pole fringing effect, the rotor pole equivalent width is the sum of the rotor pole actual width and 4 times of the air gap. The comparison experiments between the 30/24-pole and 20/16-pole WFDSGs were carried out, which verified the correctness of the theoretical analysis and finite element analysis (FEA).

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Permeance Analysis and Calculation of the Double-Radial Rare-Earth Permanent Magnet Voltage-Stabilizing Generation Device

Cited by 19 publications

References 24 publications

A Novel Surface Inset Permanent Magnet Synchronous Motor for Electric Vehicles

A Novel Surface Inset Permanent Magnet Synchronous Motor for Electric Vehicles

Analysis of Magnetic Field and Electromagnetic Performance of a New Hybrid Excitation Synchronous Motor with dual-V type Magnets

Topology Comparison Study of Five-Phase Wound-Field Doubly Salient Fault Tolerant Generators

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