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| 基于下垂锁相的逆变器并网控制策略研究 | |
| 引用本文： | 阚加荣,肖华锋,过亮,谢少军. 基于下垂锁相的逆变器并网控制策略研究[J]. 中国电机工程学报, 2011, 31(18) |
| 作者姓名： | 阚加荣 肖华锋 过亮 谢少军 |
| 作者单位： | 1. 盐城工学院电气工程学院,江苏省盐城市,224051 2. 南京航空航天大学自动化学院,江苏省南京市,210016 3. 国网南京自动化研究院,江苏省南京市,210003 |
| 基金项目： | 国家自然科学基金项目(51077070)~~ |
| 摘 要： | 采用电网电压前馈的并网逆变器,其滤波电感的感值、电流控制器的参数会影响逆变器并网功率因数.在电网电压前馈电流型并网控制策略的基础上,提出基于下垂特性的新型锁相环(phase-locked loop,PLL)控制方法,采用电网电压和并网电流相位差为反馈量调节锁相环的输出,可以实现并网逆变器单位功率因数运行,并且可以实现逆变器的反孤岛运行.给出该方法的控制框图,分析工作原理和锁相环下垂系数的选取方法,仿真和实验结果验证了该方法在改善逆变器并网功率因数和反孤岛能力方面的正确性和有效性. |
| 关 键 词： | 并网逆变器 锁相环 前馈检测 功率因数 反孤岛 相位差 |
Study of Control Strategy for Grid-connected Inverters Based on Dropped PLL |
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| KAN Jiarong , XIAO Huafeng , GUO Liang , XIE Shaojun. Study of Control Strategy for Grid-connected Inverters Based on Dropped PLL[J]. Proceedings of the CSEE, 2011, 31(18) | |
| Authors: | KAN Jiarong XIAO Huafeng GUO Liang XIE Shaojun |
| Affiliation: | KAN Jiarong1,XIAO Huafeng2,GUO Liang3,XIE Shaojun2(1.Colledge of Electrical Engineering,Yancheng Institute of Technology,Yancheng 224051,Jiangsu Province,China,2.Colledge fo Automation,Nanjing University of Aeronautics and Astronautics,Nanjing 210016,3.Nanjing Automation Research Institute,Nanjing 210003,China) |
| Abstract: | Power factor of grid-connected inverter with grid voltage feed-forward control is affected by the current-loop parameters and filter inductor.A novel control strategy based on dropped phase-locked loop(PLL) was proposed.The phase separation between the grid current and grid voltage was detected and the phase was used to calculate the PLL output frequency which determines the grid current phase.Unit power factor can be achieved and anti-islanding was also fulfilled.The control block diagram was given.The pri... |
| Keywords: | grid-connected inverter phase-locked loop(PLL) feed forward control power factor anti-islanding phase difference |
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