摘要
针对目前广泛采用的变压器式可控电抗器控制方案对电抗器本体参数的依赖较大以及未考虑如何有效控制逆变器直流侧电容电压这两个问题,提出了一种新型控制方案。该方案采用了基波分量的提取算法,通过对原边基波电压和基波电流的在线检测,实时、准确地测量当前状态下电抗器的电抗值。该控制方案根据当前状态电抗器的电抗值控制副边绕组电流的幅值,根据逆变器直流侧的电容电压和电抗器原边绕组电压的相位控制副边电流相位,不依赖于电抗器本体的参数。实验结果表明该方案不仅能有效、精确地控制电抗器的电抗值,同时还能有效地控制其逆变器直流侧的电容电压,为电抗器的高性能运行提供了条件;仿真证明该方案的正确性和有效性。
Conventional control methods for controllable reactor of transformer parameters of transformer and cannot control capacitor voltage effectively. type generally depend on the A novel control method for controllable reactor of transformer type is proposed. Based on a novel algorithm for fundamental extraction, the proposed approach can control the reactance accurately in real-time mode by monitoring the condition of primary voltage and current. It also can control the capacitor voltage effectively and keep the capacitor voltage stable by introducing the feedback of capacitor voltage to control the phase of secondary current. Simulation has been carried out to proof the effectiveness of the method.
出处
《重庆大学学报（自然科学版）》
EI
CAS
CSCD
北大核心
2010年第1期67-72,共6页
Journal of Chongqing University
基金
国家自然科学基金资助项目(50777066)
关键词
变压器
逆变器
电抗器
实时控制
相位控制
电容电压
transformer
inverter
reactor
real time control
phase control
capacitor voltage
