一种新型的正弦锁定器

A new technology of sinusoid-locked loop

为了获得稳定的零误差同时消除对专门滤波系统的设计采用了一种新型的正弦锁定技术。基于同步逆变器的控制思想,构造了有功-频率调节环、参考频率调节环、无功励磁调节环三个闭环控制回路,实现了对输入信号幅值、频率及其相位的精确同步。通过Matlab/Simulink仿真分析可知,正弦锁定技术能实现稳定的零误差输出,具有快速的动态响应性能,且能实时有效地跟踪系统频率的大范围变化,验证了理论分析的可行性。

A new sinusoid-locked loop is proposed in this paper to obtain a stable zero error and eliminate specialized filtering system design for the synchronization and grid-connected problems of new energy systems. Based on the control thinking of virtual synchronous inverter, the active power-frequency regulation loop, reference frequency adjustment loop ,and reactive power-excitation adjustment hmp are constructed to realize the precise synchronization of the input signal amplitude,frequency and phase. By Matlab/Simulink simulation analysis,the sinusoid-locked loop can achieve a stable zero error output and has fast dynamic response performance,and can effectively track the large-scale change of system frequency,thus verifies the feasibility of the theoretical analysis.