中国电机工程学报2016，Vol.36Issue(13)：3413-3421,9.DOI:10.13334/j.0258-8013.pcsee.152849
三相不控VSC的统一化谐波模型及运行状态判定
Unified Harmonic Models and Operational Mode Determination for the Three-phase Uncontrolled Voltage Source Converters
摘要
Abstract
Three-phase uncontrolled voltage source converters (VSC) have two kinds of operational modes, continuous versus discontinuous modes depending on different circuit parameters. The harmonic generating characteristics of the VSC for these two modes are very different. In order to study the harmonic generating characteristics of the three-phase uncontrolled VSC completely and accurately, a harmonic model for the converter operating in the continuous mode was proposed based on the modulation theory, following the established harmonic model for the converter operating in the discontinuous mode. Since the proposed model has a similar form as the model for the discontinuous mode, a unified analytical harmonic model was obtained. The coupling relationship between the VSC supply side harmonic voltages and its generated harmonic currents can be intuitively reflected by the unified harmonic model. Based on the derivation process of the harmonic model for the converter operating in the continuous mode, a criterion was further proposed to determine the operational modes of the VSC according to the dc currents. By comparing the results with simulations and experimental measurements, the proposed model’s accuracy and criterion’s validity were verified.关键词
电压源型整流器/断续状态/连续状态/谐波模型/判据Key words
voltage source converter/discontinuous mode/continuous mode/harmonic model/criterion分类
信息技术与安全科学引用本文复制引用
孙媛媛,刘福朝,李佳奇,张坤..三相不控VSC的统一化谐波模型及运行状态判定[J].中国电机工程学报,2016,36(13):3413-3421,9.基金项目
国家自然科学基金项目(51577108)；山东省优秀中青年科学家科研奖励基金(BS2013NJ005)。 Project Supported by National Natural Science Foundation of China (51577108) （51577108）
Promotive Research Fund for Excellent Young and Middle-aged Scientists in Shandong Province (BS2013NJ005) （BS2013NJ005）
