NDLI: Influence of sleeve conductivity on starting performance of high-speed permanent magnet synchronous starter generator for micro-gas turbine

Content Provider	IET Digital Library
Author	Qiu, Hongbo Zou, Xutian Sun, Junfeng Yang, Cunxiang Yi, Ran
Abstract	High-speed permanent magnet synchronous machine is often used as a starter generator for a single-shaft micro-gas turbine due to its high efficiency and high-power density. However, when the machine works in the starting mode, it usually needs a complex control system to start since the machine cannot realise self-starting. Therefore, here, a dual-purpose rotor sleeve is proposed for the machine to have the starting ability. Furthermore, the dynamic response speed of the machine also can be improved by optimising the electromagnetic characteristics of the sleeve. Taking a 40 kW, 20,000 r/min surface-mounted permanent magnet machine as an example, the two-dimensional finite element model of the machine is established. The start-up time and locked rotor parameters under different sleeve conductivities are studied by the finite element method. In order to find out the reason for the change of starting performance, the rotor eddy current distribution is studied. Furthermore, the starting torque of the machine is decoupling analyzed, and the influence of sleeve conductivity on various kinds of torques are found to reveal the influence mechanism of sleeve conductivity on starting performance. Finally, the correctness of the model is verified by experiments.
Starting Page	2187
Ending Page	2192
Page Count	6
ISSN	17518660
Volume Number	14
e-ISSN	17518679
Issue Number	Issue 11, Nov (2020)
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/iet-epa/14/11
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/10.1049/iet-epa.2020.0354
Journal	IET Electric Power Applications
Publisher Date	2020-07-17
Access Restriction	Open
Rights Holder	© The Institution of Engineering and Technology
Subject Keyword	A.C. Machine Air Gap Complex Control System Control of Electric Power System Different Sleeve Conductivities Dual-purpose Rotor Sleeve Dynamic Response Speed Eddy Current Loss Eddy Currents Finite Element Analysis Gas Turbines High-power Density High-speed Permanent Magnet Synchronous Machine High-speed Permanent Magnet Synchronous Starter Generator Mechanical Component Microgas Turbine Numerical Analysis Permanent Magnet Machine Permanent Magnet Motors Power 40.0 KW Rotor Eddy Current Distribution Rotors Shafts Sleeve Conductivity Start-up Time Starting Starting Ability Starting Mode Starting Performance Synchronous Generator Synchronous Machine Two-dimensional Finite Element Model
Content Type	Text
Resource Type	Article
Subject	Electrical and Electronic Engineering

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