A 1-kW Contactless Energy Transfer System Based on a Rotary Transformer for Sealing Rollers
A 1-kW Contactless Energy Transfer System Based on a Rotary Transformer for Sealing Rollers
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DOI：
10.1109/tie.2014.2311395
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发表时间：
2014-11-01
影响因子：
7.7
通讯作者：
Costanzo, Alessandra
中科院分区：
文献类型：
--
作者：
Trevisan, Riccardo;Costanzo, Alessandra
本文介绍了一种创新的非接触式能量传输系统，用于为自动机械的可旋转部件供电，作为滑动触点的可靠替代方案。讨论了DC/AC变换器和旋转变压器及其绕组等关键系统器件的设计过程。讨论了开关网络、匝数、电线和补偿方面的不同配置对系统效率和功率因数的影响。还引入了考虑核心温度的热模型。实现并测试了两种装置，工作频率为 50 kHz，能够以非接触方式传输高达 1.3 kW 的功率，用于为自动机械的密封辊电阻器供电。然后对系统原型进行实验测试，以验证整个无线电力传输链路的分析模型和有限元模拟。设置中会出现权衡，特别是在效率、功率因数和电磁兼容性方面。因此，我们根据最终应用讨论最佳配置的选择。
This paper introduces an innovative contactless energy transfer system for power supplying rotatable parts of automatic machineries as a robust alternative to sliding contacts. The design procedure of the key system devices, such as the dc/ac converter and the rotary transformer with its windings, is discussed. Different configurations in terms of switching network, number of turns, wire, and compensation are discussed with respect to their impact on the system efficiency and power factor. A thermal model to account for the core temperature is also introduced. Two setups, operating at 50 kHz and able to transfer up to 1.3 kW in a contactless fashion, are realized and tested to supply sealing roller resistors of automatic machineries. The system prototypes are then experimentally tested to validate the analytical models and the finite element simulations of the entire wireless power transfer link. Trade-offs emerge from the setups, in particular concerning efficiency, power factor, and electro-magnetic compatibility. As a consequence, we discuss the choice of the optimal configuration depending on the final application.