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[1]胡立坤,黄太昱,卢泉,等.无电压传感器的准直接功率并网变流器控制方法[J].电机与控制学报,2017,21(05):89-98.[doi:10.15938/j.emc.2017.05.012]
 HU Li-kun,HUANG Tai-yu,LU Quan,et al.Sensorless method of quasi direct power control for grid converter [J].,2017,21(05):89-98.[doi:10.15938/j.emc.2017.05.012]
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无电压传感器的准直接功率并网变流器控制方法(PDF)
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《电机与控制学报》[ISSN:1007-449X/CN:23-1 408/TM]

卷:
21
期数:
2017年05
页码:
89-98
栏目:
出版日期:
2018-04-20

文章信息/Info

Title:
Sensorless method of quasi direct power control for grid converter
作者:
?胡立坤12 黄太昱12 卢泉1 曹俊12
??( 1. 广西电力系统最优化与节能技术重点实验室,广西南宁530004; 2. 广西大学电气工程学院,广西南宁530004)
Author(s):
?HU Li-kun12 HUANG Tai-yu12 LU Quan1 CAO Jun12
( 1. Guangxi Key Laboratory of Power System Optimization and Energy Technology,Nanning 530004,China; 2. College of Electrical Engineering,Guangxi University,Nanning 530004,China)
关键词:
无电压传感器 两相静止坐标系 准直接功率控制 二阶广义积分器 占空比 比例谐振
Keywords:
voltage sensorless αβ coordinate quasi direct power control second order generalized integral duty cycle proportional resonant
分类号:
TM 46
DOI:
10.15938/j.emc.2017.05.012
文献标志码:
A
摘要:
?针对传统基于虚拟电机磁链的无电压传感器方法电压波动较大问题,结合二阶广义积分原理与占空比信号提出一种电压观测器以代替电压传感器获取更加精准的网侧电压信息。依据瞬时功率理论,在两相静止坐标系下,采用基于PQ 开环的准直接功率电压定向控制策略,实现了并网
变流器的四象限工作状态运行,电流内环采用比例谐振控制器保证指令电流快速无差跟踪。对比分析网侧电压信号谐波畸变率,实验波形表明: 所提方法不需要电压传感器与电流解耦控制环节,且谐波含量低,可获得较传统方法更准确的网侧电压信号,提高了系统运行的稳定性与可靠性。
Abstract:
For the large voltage fluctuation of the traditional method based on the virtual motor flux linkage,a voltage observer based on the second order generalized integral( SOGI) principle and duty cycle signal was proposed to replace the voltage sensor in order to obtain more accurate information of the voltage of the network side. According to the theory of instantaneous power, the quasi-direct power voltage directional control strategy based on PQ open-loop was adopted in the two-phase stationary coordinate system, and the four-quadrant operation state of the grid-connected converter was realized. Meanwhile, the application of proportional resonant controller to ensure current reference could keep tracking grid current. The result shows that the proposed method need neither the voltage sensor nor the current decoupling, the network side voltage signal with low harmonic content can be obtained more accurately than the traditional method,which improves the stability and reliability of system operation.

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备注/Memo

备注/Memo:
收稿日期: 2015 - 11 - 16
基金项目: 广西科学研究与技术开发项目( 1598008 - 3) ; 南宁市科学研究与技术开发计划( 20131048)
作者简介: 胡立坤( 1977—) ,男,博士,教授,研究方向为可再生能源变换系统与应用;
黄太昱( 1992—) ,男,硕士研究生,研究方向为新能源发电及并网变流器控制;
卢泉( 1982—) ,男,博士,副教授,研究方向为蓄电池储能高效利用;
曹俊( 1988—) ,男,硕士研究生,研究方向为光伏并网控制、电力电子技术。
更新日期/Last Update: 2017-08-24