A Fault-Tolerant Operation Approach for Grid-Tied Five-Phase Current-Source Converters With One-Phase Supplying Wire Broken
A Fault-Tolerant Operation Approach for Grid-Tied Five-Phase Current-Source Converters With One-Phase Supplying Wire Broken
复制标题
单相供电断线并网五相电流源换流器的容错运行方法
DOI：
10.1109/tpel.2018.2867219
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发表时间：
2019-07
影响因子：
6.7
通讯作者：
Chengshan Wang
中科院分区：
文献类型：
--
作者：
Jinwei He;Yuan Lyu;Qiang Li;Peijian Guo;Junfei Han;Hongjie Jia;Chengshan Wang
针对五相电流型并网变流器（CSC）在单相电源断线时的容错运行问题，提出了一种增强的容错运行方法。首先，基于序列分解法分析了该系统的瞬时潮流。结果表明，通过合理配置线路电流基准的正、负、伪零序分量，补偿滤波器CL电流偏移，CSC系统可以在减小瞬时有功功率波动的同时，使线路电流幅值最小化。因此，多相CSC能够以较小的直流轨电流脉动运行，并在容错运行期间获得更多的有功功率传输能力。此外，本文还简要地讨论了在电网复杂故障的情况下，同时断线和电网电压不平衡骤降的多相系统的控制。研究发现，有意识的恒定无功功率注入可以帮助降低五相并网系统的峰值电流。此外，应当注意，所提出的方法是以直流调制方式实现的。因此，去除了用于常规多相并网转换器的大量线路电流采集设备。最后，本文还讨论了五相CSC单相断线时的调制方法。应用修正的“安秒平衡”原理直接获得满足CSC约束条件的选通信号。
In this paper, an enhanced fault-tolerant operation approach is developed to maintain continued operation of five-phase grid-tied current-source converters (CSCs) during one-phase supplying wire broken. First, the instantaneous power flow of this system is analyzed based on the sequence decomposition method. It is found that through proper arrangement of positive-, negative-, and pseudozero-sequence components of line current reference and compensation of filter CL current offset, the CSC system can achieve reduction of instantaneous active power fluctuation and minimization of line current magnitude at the same time. Accordingly, multiphase CSCs are able to operate with smaller dc rail current ripples and to obtain more active power transfer capability during fault tolerant operation. In addition, this paper also briefly discusses the control of multiphase systems in the case of complex grid faults with simultaneous wire broken and imbalanced grid voltage dips. It is found that an intentional constant reactive power injection can help to reduce the peak current of the five-phase grid-tied system. Furthermore, it should be noted that the proposed method is realized in a direct current modulation manner. Thus, a large number of line current acquisition devices for conventional multiphase grid-tied converters are removed. Finally, this paper also discusses the modulation method of five-phase CSC with one-phase wire broken. A modified “ampere-second balance” principle is applied to direct obtain the gating signals that can satisfy the constraints of CSCs.
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DOI：
10.5860/choice.37-4522
发表时间：
1999-10
期刊：
--
影响因子：
--
作者：
M. Bollen
通讯作者：
M. Bollen
DOI：
10.1109/ias.1996.560185
发表时间：
1996-10
期刊：
IAS '96. Conference Record of the 1996 IEEE Industry Applications Conference Thirty-First IAS Annual Meeting
影响因子：
--
作者：
Y. Xiao;B. Wu;S. Rizzo;R. Sotodeh
通讯作者：
Y. Xiao;B. Wu;S. Rizzo;R. Sotodeh
影响因子：
6.7
作者：
F. Neves;M. Carrasco;F. Mancilla–David;G. Azevedo;V. Santos
通讯作者：
F. Neves;M. Carrasco;F. Mancilla–David;G. Azevedo;V. Santos
影响因子：
6.7
作者：
K. N. Pavithran;R. Parimelalagan;M. Krishnamurthy
通讯作者：
K. N. Pavithran;R. Parimelalagan;M. Krishnamurthy
影响因子：
--
作者：
G. A. Orcajo;J. Cano;C. Rojas;M. Melero;M. F. Cabanas;F. Pedrayes
通讯作者：
G. A. Orcajo;J. Cano;C. Rojas;M. Melero;M. F. Cabanas;F. Pedrayes