Efficiency improvement and power loss breakdown for a Lundell-alternator/active-rectifier system in automotive applications

IECON 2017 - 43rd Annual Conference of the IEEE Industrial Electronics Society Pub Date : 2017-12-18 DOI:10.1109/IECON.2017.8216381

D. Sarafianos, T. Flack, D. Llano, R. McMahon, Bo Wen, S. Pickering

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引用次数: 2

Abstract

A control strategy for a conventional Lundell alternator and an active-rectifier using different modulation schemes was proposed in previous work. The modulation techniques examined indicated that the system could operate more efficiently than a passive rectifier over a certain speed and power range. This paper extends the modulation scheme analysis using a SVM scheme with six commutations per switching cycle, giving better electrical and overall efficiency. Furthermore, a power loss breakdown is performed for the active-rectifier with the assistance of experimental and simulation results of double pulse tests. Switching loss estimation curves are produced allowing the loss examination of the active-rectifier. Switching losses account only for a minor portion of the total rectifier losses in comparison to conduction losses. Finally, a higher dc-link voltage of 14.5 V was introduced using SVM scheme, giving better efficiency, in order to exploit further the rectifier loss distribution.

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汽车应用中lundell -交流/有源整流器系统的效率改进和功率损耗击穿

在以前的工作中，提出了一种采用不同调制方案的传统伦德尔交流发电机和有源整流器的控制策略。测试的调制技术表明，在一定的速度和功率范围内，该系统可以比无源整流器更有效地工作。本文扩展了调制方案分析，使用支持向量机方案，每个开关周期有六个换流，提供更好的电气和整体效率。在双脉冲试验和仿真结果的帮助下，对有源整流器进行了功率损耗击穿。产生开关损耗估计曲线，允许有源整流器的损耗检查。与导通损耗相比，开关损耗只占整流器总损耗的一小部分。最后，利用支持向量机方案引入更高的直流电压14.5 V，提高了效率，进一步利用了整流器的损耗分布。

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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IECON 2017 - 43rd Annual Conference of the IEEE Industrial Electronics Society

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