煤炭工程 ›› 2016, Vol. 48 ›› Issue (11): 100-102.doi: 10.11799/ce201611029

• 研究探讨 • 上一篇    下一篇

有源电力滤波器参考补偿电流的最优控制

房胜楠,刘扬,王毅颖   

  1. 中国矿业大学(北京)
  • 收稿日期:2016-07-18 修回日期:2016-08-17 出版日期:2016-11-10 发布日期:2016-12-16
  • 通讯作者: 房胜楠 E-mail:1225446912@qq.com

Optimal control of reference compensating current for active power filter

  • Received:2016-07-18 Revised:2016-08-17 Online:2016-11-10 Published:2016-12-16

摘要: 针对煤矿电网对电能质量治理的特殊要求,提出一种在网侧电压非正弦的情况下,计算APF参考补偿电流的新方法。通过分析所设定的约束条件得出目标函数、等式约束和不等式约束,建立拉格朗日乘子法数学模型|通过数学计算得出各次谐波的最优电导值,从而得到期望的网侧电流,实现网侧的功率因数最大。该算法不需要复杂的迭代计算,实现简单且计算速度快,最后通过Matlab仿真验证该算法的可行性。

关键词: 有源电力滤波器, 谐波畸变率, 拉格朗日乘子法, 电导

Abstract: In the power quality management of coal mine power grid, Active power filter (APF) and other switching compensation devices have been widely concerned. The special requirements of power quality management for coal mine power grid, an optimal control of APF reference compensating current under non sinusoidal supply voltage is proposed. By analyzing the constrained conditions, the objective function, equality constrain and inequality constrain are obtained that establish mathematical model of Lagrange multiplier method. In order to obtaining the desired source current and achieving the maximum power factor that calculate the optimal conductance factor for the nth order harmonic using the mathematical calculation. This control algorithm does not need complex iterative calculation, the calculation speed is simple and fast. Matlab simulation validate the feasibility of the proposed algorithm.

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