Design, Analysis, and Prototyping of a Novel-Structured Solid-Rotor-Ringed Line-Start Axial-Flux Permanent-Magnet Motor

Amin Mahmoudi, Solmaz Kahourzade, Nasrudin Rahim, Wooi Hew, Mohammad Uddin

    Research output: Contribution to journalArticlepeer-review

    48 Citations (Scopus)

    Abstract

    This paper presents the design process, detailed analysis, and prototyping of a novel-structured line-start solid-rotor-based axial-flux permanent-magnet (AFPM) motor capable of autostarting with solid-rotor rings. The preliminary design is a slotless double-sided AFPM motor with four poles for high torque density and stable operation. Two concentric unilevel-spaced raised rings are added to the inner and outer radii of the rotor discs for smooth line-start of the motor. The design allows the motor to operate at both starting and synchronous speeds. The basic equations for the solid rings of the rotor of the proposed AFPM motor are discussed. Nonsymmetry of the designed motor led to its 3-D time-stepping finite-element analysis (FEA) via Vector Field Opera 14.0, which evaluates the design parameters and predicts the transient performance. To verify the design, a prototype 1-hp four-pole three-phase line-start AFPM synchronous motor is built and is used to test the performance in real time. There is a good agreement between experimental and FEA-based computed results. It is found that the prototype motor maintains high starting torque and good synchronization.

    Original languageEnglish
    Article number6523097
    Pages (from-to)1722-1734
    Number of pages13
    JournalIEEE TRANSACTIONS ON INDUSTRIAL ELECTRONICS
    Volume61
    Issue number4
    DOIs
    Publication statusPublished - 2014

    Keywords

    • Axial-flux permanent-magnet motor (AFPM)
    • finite-element analysis (FEA)
    • line-start
    • solid rotor

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