摘要
提出了一种新型的单相饱和式可控电抗器拓扑,将可控电抗器的控制绕组和辅助消谐绕组有机地统一起来。新的拓扑结构将控制绕组通过一个半桥控制电路和一个电压型的逆变器连接到和主绕组紧密耦合的辅助消谐绕组。消谐绕组在抑制谐波的同时担负从系统传递能量给控制绕组的功能。针对单相应用条件下,基于新的拓扑结构,利用能量平衡原理,检测系统侧的电流,在控制可控电抗器的等值电抗的同时,通过逆变器的输出电流,使可控电抗器在不同的工作状态下所产生的谐波得到补偿,从而使单相饱和式可控电抗器的谐波水平大为降低。仿真结果验证了新型拓扑结构的有效性和可行性。
A single-phase saturated controllable reactor is proposed,which combines control winding with harmonic elimination winding. A VSI（Voltage Source Inverter） and a half bridge circuit link the control winding and auxiliary harmonic elimination winding,which is closely coupled with main winding. The harmonic elimination winding suppresses the harmonic components and supplies energy to control winding. For single phase application,the energy balance concept is used to detect the system current and the harmonics generated by the controllable reactor at different working conditions are compensated by the output current of inverter while its equivalent inductance is controlled. The harmonic components of reactor output current are thus lowered notably. The feasibility and effec-tiveness of the proposed reactor are verified bv simulation results with Matlab/Simulink.
出处
《电力自动化设备》
EI
CSCD
北大核心
2007年第7期17-21,共5页
Electric Power Automation Equipment
关键词
饱和式可控电抗器
等效磁路
谐波抑制
能量平衡
Saturated controllable reactor
magnetic equivalent circuit
harmonic elimination
energy balance
