| 引用本文: | 王烨,牟宪民,齐琛.三相电流源型STATCOM的无锁相环控制策略[J].电力系统保护与控制,2015,43(14):131-136.[点击复制] |
| WANG Ye,MU Xianmin,QI Chen.A control strategy of three-phase current source converter based STATCOM without PLL[J].Power System Protection and Control,2015,43(14):131-136[点击复制] |
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| 摘要: |
| 为了解决传统锁相环控制只能获取电网电压角频率，而没有考虑电网电压的相位，锁相不精确，影响整个系统的控制性能等问题，提出一种适用于电流源型STATCOM的无锁相环控制策略。该策略对三相电网电压进行坐标变换，并根据各坐标系之间的关系得到与电网相电压同步旋转的相角，能够实时、精确地检测到电网电压的频率和相位角。详细论述了该控制策略，并在Matlab/Simulink中搭建系统仿真模型。仿真结果验证了该控制策略的有效性，同时表明该控制策略具有提高系统的检测精度，加快系统的动态响应速度等优势。 |
| 关键词: 电流源型STATCOM 无锁相环 坐标变换 动态响应 Simulink |
| DOI：10.7667/j.issn.1674-3415.2015.14.020 |
| 投稿时间：2014-10-20修订日期：2014-12-23 |
| 基金项目: |
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| A control strategy of three-phase current source converter based STATCOM without PLL |
| WANG Ye,MU Xianmin,QI Chen |
| (College of Electrical Engineering, Dalian University of Technology, Dalian 116023, China) |
| Abstract: |
| In order to deal with the problem of the traditional phase-locked loop (PLL), such as it can only get the frequency and does not consider the phase of grid voltage, the PLL control is inaccurate, leading to poor control performance of the whole system and so on. This paper proposes a control strategy without PLL which is applicable to CSC-STATCOM, transforms the coordinates in three-phase grid voltage, and gets the synchronous rotation angle according to the relationship of the coordinate systems. This control strategy can get the precise frequency and phase of grid voltage in time. The control strategy of this system is introduced in detail, and a model of the system is built in Matlab/Simulink. The effectiveness of this control strategy is verified by simulations performed in Simulink, and the simulation results indicate that this control strategy can improve detection accuracy of the system, and can speed up the dynamic response of the system. |
| Key words: current source converter based STATCOM (CSC-STATCOM) no phase-locked loop (PLL) coordinate transformation dynamic response Simulink |
