基于低侧开关集成电流传感器的三相逆变器电流重构算法

38th IAS Annual Meeting on Conference Record of the Industry Applications Conference, 2003. Pub Date : 2003-10-12 DOI:10.1109/IAS.2003.1257646

S. Chakrabarti, T. Jahns, R. Lorenz

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引用次数: 33

摘要

包括集成导频电流传感器的功率半导体开关，在三相逆变器应用中消除了外部电流传感器。三相逆变器中三个传统的低侧功率开关中的每一个都可以被这些特殊装置中的一个所取代，这些特殊装置旨在提供准确反映其总正向电流的传感级电流。认识到每一相的输出电流只流过低侧开关的一部分基本周期，已经开发了一种技术，仅使用不完整的相电流测量就可以重建R-L负载的全相电流波形。实验验证了所提出的电流重构技术的性能特征，包括利用集成导频电流传感器的重构电流反馈进行闭环三相电流调节器的演示。

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A current reconstruction algorithm for three-phase inverters using integrated current sensors in the low-side switches

Power semiconductor switches that include integrated pilot current sensors create opportunities to eliminate external current sensors in three-phase inverter applications. Each of the three conventional low-side power switches in a three-phase inverter can be replaced by one of these special devices that is designed to provide a sensing level current that accurately mirrors its total forward current. Recognizing that the output current in each phase flows through the low-side switch for only a portion of the fundamental cycle, a technique has been developed to reconstruct the full phase current waveforms for R-L loads using only the incomplete phase current measurements. The performance characteristics of the proposed current reconstruction technique are experimentally verified, including demonstration of a closed-loop three-phase current regulator using the reconstructed current feedback from the integrated pilot current sensors.

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38th IAS Annual Meeting on Conference Record of the Industry Applications Conference, 2003.

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