期刊论文

中文

电测与仪表

1001-1390

2018

55

5

63-69

10.3969/j.issn.1001-1390.2018.05.011

本校为第一机构

为了实时准确的补偿同相铁路负载侧的基波无功电流与谐波电流,使三相电源侧的功率因数为1,从而达到三相平衡。传统的方法是利用三角函数正交特性,用加法器,乘法器,积分器,锁相环来实现基波有功电流与无功电流的检测。虽能避免大量的矩阵与反矩阵的运算,使整个电路成本变低,易于实现,但由于单相锁相环特有的相位延时,使得在锁定电压会产生初期的相位偏差,加上低通滤波器固有的延时,严重影响了电流检测的动态性能。基于上述问题,考虑到均值滤波器特有的快速响应性能,文章提出一种基于Scott平衡变压器同相牵引供电模型下的负载基波有功电流与基波无功电流的改良检测方法,用均值滤波器来替代传统的低...

In order to compensate the fundamental wave reactive current and harmonic current accurately in the phase railway load side for making the power factor of three-phase power supply to 1 and achieving the balance of three phase system,the traditional way is to use the characteristics of trigonometric function through the adder,multiplier,integrator and phase-locked loop to realize the fundamental active current and reactive current detection.The methods can avoid a lot of matrix and the inverse matrix calculations,making the low cost of whole operation circuit,which is simple and easy to impleme...