Abstract
This paper describes the finite element (FE)-based design of a slotted tubular permanent magnet actuator (TPMA) used in railway vehicle active lateral secondary suspension that improves the actuator’s thrust and lowers its cogging force under thermal and geometric constraints. To consider the electromagnetic and thermal fields and the complex interactions among the design variables, design was carried out in an electromagnet and thermal field environment using accurate and time-effective FE analysis. A six-slot prototype model was fabricated to estimate critical thermal parameters, which are difficult to compute without experiments. Three-dimensional FE analysis using the determined thermal parameters was adopted to calculate the precise thermal distribution of the TPMA and verify the forced air-cooling effect. A prototype TPMA with a quasi-Halbach array of permanent magnets and a moving magnet was manufactured through the FE-based design process; the dynamic, electromagnetic, and thermal characteristics of the prototype TPMA were validated experimentally.
Highlights
With the increasing use of railway vehicles, many countries have become interested in the development of high-speed trains, as they have been proven to be an effective and economical means of transportation
This paper describes an finite element (FE)-based design of a slotted tubular permanent magnet actuator (TPMA) used for railway vehicle active lateral secondary suspension, which improves the actuator’s thrust and lowers its cogging force under thermal and geometric constraints
2017, 7, 152 diagram of an active lateral secondary suspension system is shown in Figure 1.3In of 17 design, the electromechanical (EM) actuator is installed between the car body and the bogie
Summary
With the increasing use of railway vehicles, many countries have become interested in the development of high-speed trains, as they have been proven to be an effective and economical means of transportation. To apply active lateral secondary suspension, an actuator with high power density, high thrust force, and excellent servo characteristics must be installed between the car body and the bogie, to handle the heavy, floating weight of the car body and passengers. This paper describes an FE-based design of a slotted TPMA used for railway vehicle active lateral secondary suspension, which improves the actuator’s thrust and lowers its cogging force under thermal and geometric constraints. 2017, 7, 152 diagram of an active lateral secondary suspension system is shown in Figure 1.3In of 17 design, the electromechanical (EM) actuator is installed between the car body and the bogie. To determine the target thrust force andIn stroke, tests the were performed using a test train with conventional lateral passive dampers.
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