Design and Manufacturing of a Modular Low-Voltage Multimegawatt High-Speed Solid-Rotor Induction Motor

Abstract

High-speed solid-rotor induction machines (HSIMs) are popular within high-speed (HS) applications because of their high rotor structural integrity and their fairly well-established manufacturing process guaranteeing high quality series products. Designing a new HS electric machine requires a multidisciplinary team to accomplish the machine performance desired. In case of a HS machine design, the components and applied materials often reach their physical limits at the rated operating condition. Therefore, the design process is highly iterative and, thus, a systematic approach has a high potential to reduce the time of the design phase significantly. In this article, a systematic design process is proposed for a modular, multimegawatt (MMW) HSIM with three radial active magnetic bearings. The process includes a traditional multidisciplinary design flow with extra critical aspects of MMW HS machines: manufacturability, bearing system, housing, and operating unit. In addition, the manufactured machine is reported. The proposed systematic design process is described, including several multidisciplinary critical design aspects of HS machinery.

Dynamics of High-Power Multi-Rotor System

“…The process is multidisciplinary, convoluted, laborious and demands highly skilled team to be accomplish, e.g. in [10], [11] and [12].…”

“…To enable better modularity of the design and broader applicability of the single machine variant, in this study, the generalization of AMB supported motor is investigated. We use a case study of a multi-megawatt (MMW) AMBrotor that has been introduced in [13], [14] and [11]. The modularity is achieved by using flexible coupling which can be tailored for the application specific needs, and enables utilization of the same driving motor for various applications.…”

Accounting for Slot Harmonics and Nonsinusoidal Unbalanced Voltage Supply in High-Speed Solid-Rotor Induction Motor Using Complex Multi-Harmonic Finite Element Analysis

“…Among the various designs, the induction machine with solid rotor deserves special attention, being one of the simplest and oldest AC electric machines, although requiring entirely different design routines that have been in development for nearly a century [1][2][3][4][5]. The mechanical properties of the solid rotor, as well as their resistance to aggressive chemical compounds, are incomparable to any other structure, which makes them a suitable source of drive-in applications requiring high or very high rotational speed such as those shown in [6][7][8][9][10][11][12][13].…”

Design and Modeling of a High-Speed Permanent Magnet Synchronous Generator with a Retention Sleeve of Rotor

“…The design procedure of HS-PMSG faces numerous challenges and hindrances. The mechanical stresses of the rotor, temperature considerations, and losses are the most significant challenges [10][11]. All the parameters affecting the mechanical and electromagnetic performance of the HS-PMSG can be determined optimally by the Taguchi optimization method.…”