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The split ratio is a significant parameter which affects the torque output and efficiency of permanent magnet machines. It has been optimized for obtaining the maximum torque output with a fixed maximum allowable copper loss or current density as the thermal constraints in the current findings. However, these indirect thermal constraints could be influenced by the split ratio due to the changing machine...
In high-speed permanent-magnet synchronous machines (PMSMs), the permanent magnets (PMs) are usually retained by high strength sleeves. Metallic sleeves are preferred in some cases where a high rotor stiffness is required. However, high frequency time and spatial harmonics of the air-gap field would induce considerable eddy-current losses in the conductive sleeve, and thus exposing the PMs to risk...
High performance operation of high-speed electric machine leads to a demand on high switching frequency, which results in inverter heating, short lifespan, large heat sink, etc. In this paper, high-speed permanent magnet synchronous machine drive with IGBT based three-level T-type inverter (3LT2I) and two-level inverter are investigated and the losses in the machine and inverter are compared. A 200kW...
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