1)three-phase PLL三相锁相环 1.This thesis made comprehensive mathematical analysis for three-phase PLL and simulation is executed as well.论文在描述双级矩阵变换器原理的基础上,指出获取电网电压相位的重要意义,通过分析传统过零点采集的缺陷,提出具有抗干扰能力的三相锁相环是代替过零点采集获取电网电压相位的...
1) three-phase PLL 三相锁相环1. This thesis made comprehensive mathematical analysis for three-phase PLL and simulation is executed as well. 论文在描述双级矩阵变换器原理的基础上,指出获取电网电压相位的重要意义,通过分析传统过零点采集的缺陷,提出具有抗干扰能力的三相锁相环是代替过零点采集获取电网...
PI控制器包括用于主输出电感的去耦前馈项。使用简单的同步参考帧锁相环(PLL)来测量电压参考的相位角。使用PLL的角度输出将V*dq电压参考值转换为三相电压参考V*abc。V*abc被馈送到调制器中,用户可以在不同的调制方案之间进行选择。所得到的调制指数m随后用于生成具有可选死区时间的开关函数。最后为三个逆变器支路中...
电压环路为d轴电流控制提供参考信号,并采用了一个PI控制器。电流控制回路在dq帧中实现,并与电网电压同步,其中定向基准由锁相环(PLL)提供。分解的d轴和q轴电流控制器是基于PI控制方案的。PI控制器采用了主动阻尼、前馈和积分反饱和的方法。 逆变器使用空间矢量PWM(SVPWM)调制进行操作。请注意,本演示中使用的3级SVP...
Phase Locked Loop (PLLA phase-locked loop is really a feedback system combining a voltage controlled oscillator (VCO) and a phase comparator so connected that the oscillator maintains a continuing phase angle in accordance with a reference signal. To be able to synchronize two power generation ...
Phase-locked loopPower convertersSynchronization algorithmsThis work presents a follow-up investigation of two phase-locked loop (PLL) algorithms that were previously proposed for applications involving grid-connected power converters. The first one provides the detection of positive-sequence components in ...
图2 新锁相环的结构图在PLL中将输入三相电压Va,Vb,Vc送入乘法器,这些乘法器可以用来检测相位。在任何相位锁定条件下的PLL系统中,两个进入乘法器的输入信号相移都是90°。相位检测原理的数学分析如下:S3(t)=S1(t)S2(t) 其中,S1(t)=A1sin〔ωt+θ1t)〕,S2(t)=A2cos〔ωt+θ2(t)〕,S1(t)S2(t)...
This example shows the use of the 3-Phase Programmable Voltage Source, PLL and Variable-Frequency Positive-Sequence Voltage and Power Measurement blocks.
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See Also Blocks Power Measurement | Sinusoidal Measurement (PLL) | Three-Phase Sinusoidal Measurement (PLL) | RMS MeasurementWhy did you choose this rating? Submit How useful was this information? Unrated 1 star 2 stars 3 stars 4 stars 5 stars × Select a Web Site Choose a web site to...