Direct Power Control for three-phase power converters under distorted input voltages

2009 IEEE International Conference on Industrial Technology Pub Date : 2009-02-10 DOI:10.1109/ICIT.2009.4939705

S. Vazquez, J. A. Sanchez, J. Carrasco, E. Galván, J. I. Leon, E. Dominguez, O. Martinez

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引用次数: 7

Abstract

Conventional Direct Power Control (DPC) technique is a simple and efficient control strategy for three-phase power synchronous rectifiers. However its performance is deteriorated when the power rectifier is working under distorted or unbalanced input voltages. In this paper the distorted input voltages operation of the system is under concern, and a model-based DPC for three-phase power converters is designed. The obtained expressions for the input control signal permit to design an adaptive control law which ensures the power reference tracking and the high performance operation of the power system. Besides, this adaptive control law minimizes the errors introduced by the parameters uncertainties as the smoothing inductor value, the grid frequency and the input voltage harmonic content. Controller design process and stability of the system are shown. Besides, the instantaneous power reference definition to achieve sinusoidal input currents are presented. Simulation results for a synchronous three-phase power rectifier prototype are shown to validate the proposed controller.

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畸变输入电压下三相电源变换器的直接功率控制

传统直接功率控制(DPC)技术是一种简单有效的三相功率同步整流器控制策略。但是，当电源整流器在输入电压畸变或不平衡的情况下工作时，其性能会下降。本文针对系统输入电压畸变运行的问题，设计了一种基于模型的三相电源变换器DPC。得到的输入控制信号表达式允许设计自适应控制律，以保证电力参考跟踪和电力系统的高性能运行。此外，该自适应控制律最大限度地减小了平滑电感值、电网频率和输入电压谐波含量等参数不确定性带来的误差。给出了控制器的设计过程和系统的稳定性。此外，给出了实现正弦输入电流的瞬时功率基准定义。通过同步三相功率整流器样机的仿真结果验证了所提控制器的有效性。

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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2009 IEEE International Conference on Industrial Technology

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