An Accurate Power-Sharing Control Method Based on Circulating-Current Power Phasor Model in Voltage-Source Inverter Parallel-Operation System
An Accurate Power-Sharing Control Method Based on Circulating-Current Power Phasor Model in Voltage-Source Inverter Parallel-Operation System
复制标题
电压源逆变器并联系统中基于环流功率相量模型的精确均功率控制方法
DOI：
10.1109/tpel.2017.2720479
复制
发表时间：
2018-05
影响因子：
6.7
通讯作者：
Zhaoming Qian
中科院分区：
文献类型：
--
作者：
Mingzhi Gao;Min Chen;Chenxi Wang;Zhaoming Qian
提出了一种电压源逆变器并联系统（VSIPS）的优化数学模型，并在此基础上提出了一种改进的下垂控制方法，可实现VSIPS的精确功率分配。首先，本文分析了VSIPS作为一个多输入多输出系统，并提出了一个精确的定义环流。在导线阻抗优化设计的基础上，提出了环流模型、稳态模型和小信号模型，构成了s域VSIPS的优化数学模型。提出了环流相量模型和环流功率相量模型。其次，建立了基于CCPPM的传统下垂控制的数学模型，分析了下垂控制在稳态电压偏差和均载精度之间的权衡关系，证明了V-Q下垂控制不能实现精确的无功功率分配。第三，提出了一种改进的下垂控制方法（ω - P环和V-Q环控制），该方法可以实现精确的有功和无功功率分配，同时消除稳态电压偏置。最后，仿真和实验结果，验证了所提出的数学模型，下垂控制的分析，和所提出的方法的性能。
This paper proposes an optimized mathematical model of the voltage-source inverter parallel-operation system (VSIPS) and proposes an improved droop control method based on this model, which can realize accurate power sharing in VSIPS. First, this paper analyzes VSIPS as a multi-input and multioutput system and proposes a precise definition of circulating current. The circulating-current model, the steady-state model, and the small-signal model are proposed subsequently based on the optimum design of wire impedance, which constitute the optimized mathematical model of VSIPS in s-domain. The circulating-current phasor model and the circulating-current power phasor model (CCPPM) are also proposed. Second, the mathematical model of traditional droop control is built and analyzed based on CCPPM, which elaborates the tradeoff of droop control between the steady-state voltage bias and the load-sharing accuracy, and proves that the V - Q droop control cannot realize accurate reactive-power sharing. Third, an improved droop control method (ω - P cir and V - Q cir control) is proposed, which can realize the accurate activeand reactive-power sharing and eliminate the steady-state voltage bias simultaneously. Finally, simulation and experimental results are presented, which validate the proposed mathematical model of VSIPS, the analysis of droop control, and the performance of the proposed method.
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DOI：
10.1109/apec.2015.7104592
发表时间：
2015-03
期刊：
2015 IEEE Applied Power Electronics Conference and Exposition (APEC)
影响因子：
--
作者：
Bo Liu;Sheng Zheng;Yiwei Ma;Fred Wang;L. Tolbert
通讯作者：
Bo Liu;Sheng Zheng;Yiwei Ma;Fred Wang;L. Tolbert
影响因子：
7.7
作者：
J. Guerrero;N. Berbel;J. Matas;J. Sosa;J. Cruz;A. Alentorn
通讯作者：
J. Guerrero;N. Berbel;J. Matas;J. Sosa;J. Cruz;A. Alentorn
影响因子：
6.7
作者：
Tzung-Lin Lee;Po-tai Cheng
通讯作者：
Tzung-Lin Lee;Po-tai Cheng
DOI：
10.1007/978-1-84800-318-7
发表时间：
2010-12
期刊：
--
影响因子：
--
作者：
R. Strzelecki;G. Benysek
通讯作者：
R. Strzelecki;G. Benysek
影响因子：
6.7
作者：
Xiaofeng Sun;Yancong Hao;Qingfeng Wu;Xiaoqiang Guo;Baocheng Wang
通讯作者：
Xiaofeng Sun;Yancong Hao;Qingfeng Wu;Xiaoqiang Guo;Baocheng Wang