Abstract
A dual mover yokeless multi-tooth (DMYMT) permanent magnet flux switching motor (PM-FSM) design is presented in this article for ropeless elevator applications. The excitation sources, including a field winding and permanent magnet, are on the short mover in the proposed design structure, whereas the stator is a simple slotted iron core, thus reducing the vertical transportation system cost. The operational principle of the proposed DMYMT in PM-FSM is introduced. The proposed dual mover yokeless multi-tooth Permanent Magnet Flux Switching Motor is analyzed and compared for various performance parameters in a Finite Element Analysis package. The proposed machine has high thrust force and cost-effectiveness compared to conventional dual permanent magnet motor. Finally, this paper also develops an analytical model for the proposed structure, validated by comparing it with Finite Element Analysis simulation results. Results show good agreement between analytical prediction and Finite Element Analysis results.
Highlights
Due to the growing population and increase in prices in metropolitan areas, such as New York, Hong Kong, and Tokyo, the number of buildings and their height increases rapidly
The presence of all active sources, i.e., armature windings and permanent magnet (PM), on the short mover and magnetic saturation of LPMFSM forces the designers to adopt a numerical method of analysis, i.e., Finite Element Analysis (FEA)
A dual mover yokeless multi-tooth PMFSM is proposed for ropeless elevator applications
Summary
Due to the growing population and increase in prices in metropolitan areas, such as New York, Hong Kong, and Tokyo, the number of buildings and their height increases rapidly. A ropeless elevator system propelled by a linear car has been proposed to tackle these problems [3] Adopting this vertical transportation system eliminates the heavy steel cable and counterweight [4,5], improving the operational performance and efficiency, and reducing the hoistway area. The iron losses and weight of the machine are reduced [15] Among those new topologies, the dual mover yokeless multi-tooth (DMYMT) LFSM has better electromagnetic performance, i.e., lower detent force, force ripple ratio, and iron losses. The design parameters of both machines are kept the same
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