As an auxiliary brake element, the eddy current brake is widely used to ensure safe driving in heavy vehicles due to its noncontact braking characteristics. It is important to increase the power density of the eddy current brake and suppress the thermal derating of its braking performance. According to the principle of the eddy current braking and current skin effect, a decline in temperature can greatly increase the eddy current density of the low-frequency electromagnetic device. In this paper, a new heat dissipation method is proposed to cool the heating surface of the eddy current brake directly. The electromagnetic field model and the flow-heat coupling model are established to predict and analyze the steady-state temperature distribution and braking torque. A new type of internal liquid cooling eddy current brake prototype was manufactured for a bench test. The experimental data prove that the computational model is effective. The calculation results show that the new internal liquid cooling eddy current brake has improved heat dissipation advantages.

中文翻译：

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新型液冷涡流制动器散热优化研究


涡流制动器作为一种辅助制动元件，由于其非接触制动特性而被广泛应用于保证重型车辆的安全行驶。提高涡流制动器的功率密度并抑制其制动性能的热降额非常重要。根据涡流制动和电流集肤效应的原理，温度的下降可以大大增加低频电磁装置的涡流密度。本文提出了一种新的散热方法，直接冷却涡流制动器的加热表面。建立电磁场模型和流热耦合模型来预测和分析稳态温度分布和制动扭矩。制造了一种新型内部液冷涡流制动器原型，用于台架测试。实验数据证明了计算模型的有效性。计算结果表明，新型内部液冷涡流制动器具有改善散热的优势。