首页|可抑制直流偏移的软启动式单相锁频环

可抑制直流偏移的软启动式单相锁频环

扫码查看
针对传统的锁频环无法抑制电网电压直流偏移问题,提出一种基于直流偏移抑制环路的锁频环结构;为提高锁频环在启动期间和相位跳变下的动态性能,对传统锁频环结构进行改进以降低锁频环的频率估计器环路增益,实现快速平滑的相角跳变跟踪;最终提出一种可抑制电网电压直流偏移的软启动式单相锁频环.仿真分析和实验结果表明,所提结构具有良好的稳态特性和动态特性.
SOFT-START SINGLE-PHASE FREQUENCY-LOCKED LOOP WITH DC COMPONENT REJECTION CAPABILITY
Aiming at the problem that the traditional frequency-locked loop cannot reject the DC component of grid voltage,a frequency-locked loop structure based on DC component rejection loop is proposed.In order to improve the dynamic performance of the frequency-locked loop during startup stage and phase angle jump condition,the traditional frequency-locked loop structure is improved to reduce the gain of the frequency estimator loop,achieving fast and smooth phase angle tracking.Finally,a soft-start up single-phase frequency-locked loop which can reject DC component of grid voltage is proposed.Simulation analysis and experimental results show that the proposed structure has good steady-state and dynamic characteristics.

PV power generationfrequency estimationsynchronizationDC component rejectionsoft-startup

罗(韦)、王琛琛

展开 >

上海理工大学电气工程系,上海 200093

光伏发电 频率估计 同步 抑制直流分量 软启动

2024

太阳能学报
中国可再生能源学会

太阳能学报

CSTPCD北大核心
影响因子:0.392
ISSN:0254-0096
年,卷(期):2024.45(1)
  • 4