DC link voltage sensorless control of a three-phase boost power factor correction rectifier

2016 IEEE Transportation Electrification Conference and Expo (ITEC) Pub Date : 2016-06-27 DOI:10.1109/ITEC.2016.7520281

Ayan Mallik, A. Khaligh

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引用次数: 8

Abstract

This paper presents an innovative and simple approach of controlling a three-phase boost-type rectifier without using an output DC link voltage sensor, whose information is one of the most importantly governing factor of stability and regulation of the converter. Though all the traditional PFC control techniques require the feedback signals from input voltage, input current and output voltage sensors to ensure the stability of the converter, reducing a DC voltage sensor is theoretically feasible and implementable without affecting stability of the system, as proposed in this manuscript. The proposed control method incorporates the prediction of the output voltage from the fluctuations of other state variables and preceding switching state information from converter dynamics. In order to validate and perform a proof-of-concept verification to the proposed control strategy, a 2 kW three-phase boost PFC prototype is designed and developed. The experimental results show that an input power factor of 0.995, a total harmonic distortion (THD) as low as 2.1%, a conversion efficiency of 97.8% and a tightly regulated DC link voltage with 1% ripple can be achieved.

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三相升压功率因数校正整流器直流链路电压无传感器控制

本文提出了一种新颖而简单的方法来控制三相升压型整流器，而不使用输出直流链路电压传感器，其信息是影响变流器稳定性和调节的最重要因素之一。虽然所有传统的PFC控制技术都需要输入电压、输入电流和输出电压传感器的反馈信号来保证变换器的稳定性，但正如本文所提出的那样，减少直流电压传感器在理论上是可行的，并且在不影响系统稳定性的情况下是可以实现的。所提出的控制方法结合了其他状态变量波动对输出电压的预测和变换器动力学中先前开关状态的信息。为了验证并执行对所提出的控制策略的概念验证，设计并开发了一个2 kW三相升压PFC原型。实验结果表明，该电路的输入功率因数为0.995，总谐波失真(THD)低至2.1%，转换效率为97.8%，直流链路电压稳压为1%纹波。

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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2016 IEEE Transportation Electrification Conference and Expo (ITEC)

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