Magnetic Flux Analysis of a New Field-Excitation Flux Switching Motor Using Segmental Rotor

This paper presents magnetic flux analysis of E-Core Hybrid Excited FSM with various rotor pole topologies. The stator consists of three active fluxes sources namely armature coil, field excitation coil and permanent magnet, while the rotor consists of only stack of iron which is greatly reliable for high speed operation. Initially, coil arrangement tests are examined to validate the operating principle of the motor and to identify the zero rotor position. Then, performances of 6S-4P, 6S-5P, 6S-7P and 6S-8P E-Core HEFSMs such as flux path, flux linkage, cogging torque and flux distribution are observed. As conclusion, 6S-5P and 6S-7P designs have purely sinusoidal flux waveform and less cogging torque suitable for high torque and power motor.

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Magnetic flux analysis of E-Core hybrid excitation flux switching motor with various topologies

2014 IEEE Asia-Pacific Conference on Applied Electromagnetics (APACE) ◽

10.1109/apace.2014.7043821 ◽

2014 ◽

Author(s):

Siti Nur Umira Zakaria ◽

Erwan Sulaiman

Keyword(s):

Magnetic Flux ◽

Flux Analysis ◽

Hybrid Excitation ◽

Flux Switching Motor

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Improved Design of Three Phase Hybrid Excitation Flux Switching Motor with Segmental Rotor

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.785.295 ◽

2015 ◽

Vol 785 ◽

pp. 295-299

Author(s):

Erwan Sulaiman ◽

Hassan Ali ◽

Mubin Aizat ◽

Zhafir Aizat

Keyword(s):

Induced Voltage ◽

Element Analysis ◽

Test Analysis ◽

Excitation Coil ◽

Hybrid Excitation ◽

Field Excitation ◽

Improved Design ◽

Rotor Structure ◽

Segmental Rotor ◽

Flux Switching Motor

This paper presents the new design of Hybrid Excitation Flux Switching Motor (HEFSM) using segmental rotor structure. HEFSMs are those that consist all the excitation flux sources at their stator with robust rotor structure. The rotor is designed as segmental due to the reason that segmental rotor has ability to yield the magnetic path for conveying the field flux to nearby stator armature coil with respect to the rotation of the rotor. This design gives the clear advantage of shorter end winding compared to the toothed rotor as there is no overlap winding between field excitation coil (FEC) and armature coil. In this paper the initial design of HEFSM with segmental rotor has been improved by changing segment span, FEC slot area and armature slot area until maximum torque and power of 33.633 Nm and 8.17 KW respectively have been achieved. Moreover coil test analysis, induced voltage, cogging torque, magnetic flux characteristics, torque vs. field current density and torque vs. power speed characteristics are examined on the basis of 2-D finite element analysis (FEA).

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Preliminary Design Analysis of a New Field Excitation Flux Switching Machine with Segmental Rotor and Non-overlap Winding

International Journal of Engineering & Technology ◽

10.14419/ijet.v7i2.23.11906 ◽

2018 ◽

Vol 7 (2.23) ◽

pp. 157

Author(s):

M F. Omar ◽

E Sulaiman ◽

H A. Soomro ◽

G M. Romalan ◽

S M. N. S. Othaman

Keyword(s):

Magnetic Flux ◽

High Speed ◽

Flux Linkage ◽

Element Analysis ◽

Test Analysis ◽

Field Excitation ◽

Low Torque ◽

Flux Path ◽

Rotor Structure ◽

Segmental Rotor

Recently, a three-phase Field Excitation Flux Switching Motor (FEFSM) with salient rotor structure has been introduced with their advantages of easy rotor temperature elimination and controllable FEC magnetic flux particularly meet for high torque, high power as well as high speed diverse performances. Nevertheless, the salient rotor structure is found to lead a longer magnetic flux path between stator and rotor producing weak flux linkage along with low torque performances. Therefore, a new structure of a single-phase FEFSM using segmental rotor with non-overlap windings is proposed. Segmental rotor and non-overlap windings are the clear advantages of these topologies as the copper losses gets reduce and rotor becomes less weight as well as more robust. Detailed analysis on winding arrangement test analysis, armature and FEC flux linkage, back-EMF and average torque characteristics have been performed by using 2D Finite Element Analysis (FEA) through JMAG version 15 software. The results show that the proposed motor with segmental rotor and non-overlap windings produce short flux path, high flux linkage and the highest torque capability achieved is 0.91 Nm.

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