A Novel Dual-Structure Parallel Hybrid Excitation Machine for Electric Vehicle Propulsion

Zhang, Xiaodong; Zhao, Xing; Niu, Shuangxia

doi:10.3390/en12030338

Cited by 6 publications

(5 citation statements)

References 29 publications

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“…Then, the flux of the initial position Φ 1 (θ r ) can be obtained from (13). Perform iterative calculation according to (14), and update R k , J k when the rotor moves to the next position. When the difference between Φ k+1 and Φ k is within the allowable range, the solution of rotor position is obtained.…”

Section: Mec Modelmentioning

confidence: 99%

“…However, it is difficult to regulate voltage and is easily affected by temperature. Hence, the hybrid excitation method is introduced as a decent candidate for the EV system [13][14][15]. In a hybrid excitation claw pole machine (HE-CPM), the PM excitation can bring high power density and the field excitation ensures good flux regulation capability [16,17].…”

Section: Introductionmentioning

confidence: 99%

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Optimization Design and Performance Evaluation of a Hybrid Excitation Claw Pole Machine

Cao

Zhu

et al. 2022

Processes

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Claw pole machines (CPMs) have the advantages of a simple structure and low cost; therefore, they are commonly used in electric vehicles (EV). However, the methods to improve reliability and efficiency should be studied. So, a new type of hybrid excitation claw pole machine (HE-CPM) for EV is proposed. The permanent magnet (PM) is inserted in the rotor, and the field winding is placed on the front and back ending cover. Because the hybrid flux path of the proposed machine is three-dimensional (3D) and 3D finite element analysis (FEA) is time-consuming, a 3D magnet equivalent circuit (MEC) method considering rotor position is proposed and results between 3D MEC and FEA are compared. Particle swarm optimization (PSO) and 3D MEC are combined in the optimization design of HE-CPM. The optimized results prove the effectiveness of the optimization method. Finally, the flux density distribution, electromagnetic characteristics of HE-CPM are evaluated. The thermal analysis and mechanical stress analysis are carried out. The HE-CPM prototype was manufactured. The direct current (DC) bus voltages under different excitation currents and load currents are measured and compared with those of FEA. When the armature current and the excitation current are 7 A and 4 A, respectively, the rated power and rated speed of HE-CPM are 10.28 kW and 3000 rpm, respectively. The maximum efficiency is 89%. FEA results are basically consistent with the experimental results. Accurate results and time savings can be achieved by combining PSO and 3D MEC.

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Section: Mec Modelmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Optimization Design and Performance Evaluation of a Hybrid Excitation Claw Pole Machine

Cao

Zhu

et al. 2022

Processes

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show abstract

“…However, because the magnetic field of the PM machine is relatively constant and the air gap magnetic field could not be adjusted, the flux regulation capability of the PM machine is totally limited. It results that the flux-weakening current component is always required to operate at high speed, which would reduce the efficiency and then restrict the greater development and application space of PM machine [2][3][4][5]. Therefore, the hybrid excited machine (HEM), which is excited by the PM and field winding simultaneously, is presented to improve the flux regulation capability of PM machine while the inherent excellent electromagnetic performance could be guaranteed.…”

Section: Introductionmentioning

confidence: 99%

Operation Principle and Influence of the Sub‐Harmonic Component Utilized in the Brushless Hybrid Excited Machine with PM in Rotor

Liu

Wang

et al. 2022

IEEJ Transactions Elec Engng

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Hybrid excited machine (HEM) is a novel type of machine which has attracted much attention as it is able to adjust the flux linkage flexibly and ensure the wide speed range operation. In this paper, a novel brushless HEM with permanent magnet (PM) located in rotor is further researched. By supplying specific armature currents, the sub‐harmonic component magnetomotive force (MMF) in stator MMF would be generated and utilized to realize the brushless hybrid excited operation. Firstly, the generation principle of the sub‐harmonic component is derived analytically. Secondly, during the brushless hybrid excited operation, the influence of the stator current amplitude ratio m$$ m $$ is quantitatively studied. Thirdly, based on 2D finite element analysis (FEA), the electromagnetic performance of the brushless HEM is analyzed under different operation statuses over a wide speed range. At last, the experiment is performed based on a 6 kW brushless HEM prototype machine, and the correctness of the theoretical analysis and FEA results are validated by the test. © 2022 Institute of Electrical Engineers of Japan. Published by Wiley Periodicals LLC.

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“…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. Based on the PMSM with added excitation windings, the hybrid excitation synchronous motor (HESM) with a controllable magnetic field has been proposed, and it has become the focus of increasing attention for scholars around the world [5][6][7].…”

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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A Novel Dual-Structure Parallel Hybrid Excitation Machine for Electric Vehicle Propulsion

Cited by 6 publications

References 29 publications

Optimization Design and Performance Evaluation of a Hybrid Excitation Claw Pole Machine

Optimization Design and Performance Evaluation of a Hybrid Excitation Claw Pole Machine

Operation Principle and Influence of the Sub‐Harmonic Component Utilized in the Brushless Hybrid Excited Machine with PM in Rotor

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

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