MATEC Web Conf.
Volume 153, 2018The 4th International Conference on Mechatronics and Mechanical Engineering (ICMME 2017)
|Number of page(s)
|Power Machinery and Transmission
|26 February 2018
Power Loss and Heat Dissipation Characteristics of High-Power Electromechanical Actuators
Institute of Precision Guidance and Control, School of Astronautics, Northwestern Polytechnical University, 710072, Xi’an, China
Due to serious power loss and heating caused by compact volume and high power density of high power electromechanical actuator (EMA), thermal analysis is becoming the key aspects in its design optimization. Numerical calculation method is proposed to calculate the electrical loss, iron core loss and drive chain mechanical loss in EMA. An equivalent thermal network model based on lumped parameters is established, with the acquisition of heat transfer matrix equation of all network nodes. Temperature rise of each part of the EMA is obtained by solving the equation. By comparison of simulated temperature rise in rated operating condition with test results, the accuracy of the model is verified. Then temperature rise simulation of EMA under simulated actual flight condition is carried out, with the results showing positive guidelines in the optimization design of EMA systems.
© The Authors, published by EDP Sciences, 2018
This is an Open Access article distributed under the terms of the Creative Commons Attribution License 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (http://creativecommons.org/licenses/by/4.0/).
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