基于载波移相的低压大电流APF系统应用研究

Research on Application of the Low-voltage and High-current APF Based on the Carrier Phase-shifted Technology

大容量非线性负载产生含量丰富且比重较大的谐波电流源,导致电网畸变严重,低压大电流APF系统可以有效地进行就地补偿,有跟踪速度快、补偿精度高、长期稳定性好等一系列特点。从低压大电流APF系统本身讲述了系统优点分析、系统总体架构、系统核心控制算法、载波移相技术的采用以及系统实验效果和现场应用效果,较好地体现了系统的技术价值和市场推广价值。

Plentiful and heavy harmonic current source was introduced by powerful nonlinear load in lots of industrial organization, which also lead to serious distortion in the power supply system. Low-voltage and high-current APF system can delete the harmonic current at the source in order to prevent all the facilities in upper stream of grid from effect by the harmonic components. APF enjoys characteristics of quick response and target tracking, high compensation precision and good reliability. The topology, advantage, key algorithm and carrier phase- shifted application in the system were shown, moreover, the results in laboratory and field application also be illustrated, which demonstrate the value in technology and marketplaces.