摘要
提出了一种应用于三相三线制系统中的新型电力有源滤波器设计方法。基于直流电压反馈和滞环电流控制算法,对三相系统电流进行直接比较控制,避免了检测谐波和无功电流分量的繁琐过程。在负荷三相不平衡、电源侧不平衡或畸变的情况下仍可保持系统电流三相平衡,且动态变化过程中系统电流无畸变,可保证系统电流波形的平滑过渡。数值仿真结果证明,使用该算法设计的电力有源滤波器能有效补偿谐波和无功电流,抑制负载不对称,对系统补偿时能够具有良好的动态跟踪性,稳定性能好。
One new three-phase three-wire Active Power Filter （APF） was presented in this paper. It is based on DC voltage feedback control and hysteresis current control strategy, which controls the main current directly and avoids the complex calculation of harmonic and reactive current. The proposed system can maintain three-phase current balanced and the main currents are not distorted in the dynamic course when the three-phase load or source is unbalanced or distorted. The results of digital simulation showed that the proposed strategy can compensate the harmonic and reactive current effectively, restrain unbalanced load currents. And it has good dynamic tracking effect and stable performance.
出处
《电力科学与工程》
2009年第6期10-15,共6页
Electric Power Science and Engineering
关键词
三相三线制
有源滤波器
控制算法
仿真
three-phase three-wire
Active Power Filter （APF）
control arithmetic
simulation
