Design and development of a hybrid excited claw pole synchronous machine

Melcescu, Leonard; Cistelecan, Mihail V.; Popescu, Mihail; Craiu, Ovidiu

doi:10.1109/acemp.2011.6490703

Cited by 4 publications

(6 citation statements)

References 9 publications

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“…However, one issue of this design is the complex stator structure, which leads to difficultly in manufacturing. The hybrid excited claw pole machine reported in [17] has a configuration similar to the proposed HE-CPM, its PMs are mounted on the rotor, and the field winding is embedded within machine shields. However, its rated power is too low due to a small machine size.…”

Section: Discussionmentioning

confidence: 99%

“…The generator is a dual three-phase machine, therefore, two sets of three-phase back EMF can be obtained. It can be seen that the difference between A1 and A2 back EMF is 30 degrees, and the amplitude of phase voltage is 768 V. According to (17), the generator output power P out is obtained by multiplying the back EMF e(t) by the current i(t), and the power divided by the angular velocity ω r is the generator output torque T out (t). Therefore, the back EMF will directly affect the power and torque.…”

Section: Electromagnetic Characteristicsmentioning

confidence: 99%

“…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]. The air gap field is mainly produced by PMs and the role of the field current is to adjust the air gap field.…”

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: Discussionmentioning

confidence: 99%

Section: Electromagnetic Characteristicsmentioning

confidence: 99%

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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“…The hybrid excited claw pole synchronous motor proposed in Ref. [20] is similar to the proposed DDHEG in the aspect of machine configuration, the PMs are placed on machine rotor, and the excitation winding is inserted in machine shields. However, the machine size is too small, which limits its rated power.…”

Section: Experimental Verificationmentioning

confidence: 99%

Design and Analysis of a Dual‐Direction Hybrid Excitation Generator

Cao

Liu

2022

IEEJ Transactions Elec Engng

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With the wide use of new energy vehicles, the research and development of high-performance generators become more important. The claw pole machine is very suitable to be used as an automobile generator because of its unique characteristics. However, its development is limited by the disadvantage of abundant harmonic content, especially when used with fractional slot concentrated winding layout. A novel dual-direction hybrid excitation generator (DDHEG) is proposed in this paper. It has dual 3-phase winding layout to reduce spatial subharmonic magnet motive force (MMF). Also, it uses dual 3-phase rectifier bridge circuit to reduce armature current, so as to reduce copper loss. It uses rotor sleeve to reduce the eddy current loss in the rotor and permanent magnets (PMs) caused by higher order harmonics. It has hybrid excitation from both directions to improve the efficiency and terminal voltage. The basic characteristics of DDHEG are analyzed by finite element analysis (FEA) method. The highlights of the proposed DDHEG are illustrated. The simulation results and experimental results reveal that the proposed DDHEG can effectively adjust the terminal voltage at different loads and reduce the harmonics and loss to a satisfied degree.

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“…The alternator-based turbine system is therefore a low-cost solution aimed at making wind power available in more deprived areas, where the current cost of the technology is still prohibitive. Thus, Melcescu et al [10], Lundmark et al [11], and Devornique et al [12] apply numerical analysis by finite element method (3D-FEM) for the design and development of a hybrid claw-pole synchronous generator. The output voltage is easily regulated with minimum power, through the current in the field coil.…”

Section: Introductionmentioning

confidence: 99%

Low-cost variable-speed wind turbines design by recycling small electrical machines. Arrangement of permanent magnets in the rotor

Ballestín-Bernad¹,

Sevil²,

Domínguez-Navarro³

et al. 2022

REPQJ

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This paper describes the design of low-cost variablespeed wind turbines by recycling small electrical machines. In this way, electrical machines such as automobile claw-pole alternators, induction motors for domestic applications, or simply electric motors for some industrial applications are studied, considering their reuse as permanent magnet synchronous generators (PMSG) in small wind turbines or hydro-power turbines. The main purpose is the integration of hybrid energy conversion systems (wind and hydraulic turbines) in small stand-alone microgrids within the rural environment. Likewise, in order to optimize the design, the arrangement of the permanent magnets in the rotor is analyzed. The analysis has been carried out using the FluxMotor simulation software, which is based on the 2D finite element method. At the same time, the FEM software provides a lot of information about the optimization of the electrical machine and its multiple design options and topologies. Suggested designs have similar performance as well as a similar size and weight. The purpose has been to explore different topologies and select the most efficient designs. In this way, it is shown that it is possible to reuse an electrical generator easily, without losing much of the general performance.

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Design and development of a hybrid excited claw pole synchronous machine

Cited by 4 publications

References 9 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

Design and Analysis of a Dual‐Direction Hybrid Excitation Generator

Low-cost variable-speed wind turbines design by recycling small electrical machines. Arrangement of permanent magnets in the rotor

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