Automatic tuning concept for a three-phase inductive power transfer system

2014 4th International Electric Drives Production Conference (EDPC) Pub Date : 2014-12-15 DOI:10.1109/EDPC.2014.6984419

R. Arnold, P. Gratzfeld

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引用次数: 6

Abstract

Contactless charging of electric vehicles by means of inductive power transfer is becoming increasingly popular in the recent years. In contrast to wired power interfaces, user-friendly and secure wireless links with no physical contact are preferable. Especially in the higher power range (>100kW), three-phase approaches are an encouraging alternative to single-phase systems due to great EMC benefits. While compensation of single-phase systems is comparatively simple, the static tuning procedure is much more complex for three-phase systems. Aggravating, system parameter drifts arising from slightly mismatched positioning and thermal influences shift the systems current working point away from the optimal one for which the whole system is tuned statically. As an essential base, in a first part this paper introduces an appropriate approach for the static tuning of a three-phase system and discusses the effects of parameter drifts on the pickup. Based on the static tuning, concept ideas for an automatic retuning of the pickup during operation are presented in the second part.

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三相感应电力传输系统的自动调谐概念

近年来，利用感应电能传输的非接触式充电技术在电动汽车中越来越受欢迎。与有线电源接口相比，无需物理接触的用户友好且安全的无线链路更可取。特别是在更高的功率范围内(>100kW)，由于具有巨大的EMC优势，三相方法是单相系统的令人鼓舞的替代方案。单相系统的补偿相对简单，而三相系统的静态整定过程要复杂得多。更为严重的是，由于定位不匹配和热影响引起的系统参数漂移使系统电流工作点偏离了整个系统静态调谐的最佳工作点。作为一个基本的基础，在第一部分中，本文介绍了一种适合三相系统静态调谐的方法，并讨论了参数漂移对拾取的影响。第二部分在静态调音的基础上，提出了自动调音的概念。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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2014 4th International Electric Drives Production Conference (EDPC)

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