摘要
研究了一种利用锁相环使变频电源快速同步到工频电源上的方法。以一实际跟踪控制回路为例,进行了建模、仿真。对变频器之后滤波器的传递函数进行了分析,指出了它的特殊性。进行了实际控制试验,使用希尔伯特变换对记录数据进行了分析,得到了清晰的同步过程中频率、相角等随时间变化的曲线。
This paper studies a speedy method of synchronizing variable frequency devices （VFD） with line power using phase-locked-loop （PLL）. A practical control circuit is modeled and simulated. The particularity of the filter which connected with VFD＇s output is pointed out through analyses of its transfer function. Clear tracing curves of how the frequency and the phase vary with time are illustrated using the recorded data from practical experiments and processed with Hilbert transformation.
出处
《电工技术学报》
EI
CSCD
北大核心
2006年第11期96-100,共5页
Transactions of China Electrotechnical Society
关键词
变频器
锁相环
同步切换
SPWM
贝赛尔滤波器
希尔伯特变换
Variable frequency device, phase locked loop, synchronized transfer, SPWM, Bessel filter, Hilbert transformation
