Parameter Sensitivity Study for Optimization of 12Slot-8Pole Three-Phase Wound Field Switched-Flux Machine

Abstract:

This paper presents parameter sensitivity study and performance analysis of 12Slot-8Pole three-phase wound field switched-flux machine (WFSFM). The proposed machine consists of 6 armature slots, 6 field-excitation coil (FEC) slots and 8 rotor poles. All active parts such as armature coil and FEC are located on the stator, while the rotor part consists of only single piece iron. This makes the machine becoming more robust and more suitable to be apply for high speed motor drive system applications. The deterministic design optimization approach is used to treat several design parameters defined in rotor, armature and FEC slot area to achieve better results than initial design. 2-D finite element analysis (FEA) is used to study various characteristics of machine. Since the initial design fail to attain the maximum torque and power, therefore the performance of machine is enhanced by refinement of several design parameters. After design refinement, WFSFM has achieved the maximum torque of 22.34 Nm and power of 5.27 kW at maximum field current density, J_e of 30 A/mm² and armature current density, J_a of 30A_rms/mm² which is approximately 3 times the torque and 2 times the power of initial design.

• Periodical: Applied Mechanics and Materials (Volume 695)
• Pages: 765-769
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.695.765
• Online since: November 2014
• Authors: Faisal Khan*, Erwan Sulaiman, Md Zarafi Ahmad, Zhafir Aizat
• Keywords: Deterministic Optimization, Finite Element Analysis (FEA), Non-Overlap Winding, Robust Rotor, Switched-Flux Machine

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