采用能量优化控制策略的串联型电能质量控制器稳态特性分析

利用相量图分析方法对采用能量优化控制策略的串联型电能质量控制器(series power quality controller, SPQC)稳态特性进行了定量分析。选取负载电流相量为参考相量对SPQC进行相量图分析，使各物理量之间的关系更清晰，便于定量求解。根据电源电压幅度与负载功率因数的关系，提出采用能量优化控制策略的SPQC 3种工作模式。分别在电压暂低和电压暂高情况下，对采用能量优化控制策略的SPQC稳态特性进行了详细的定量分析，据此获得了反映电压幅度暂变各种情况下有关物理量之间关系的稳态补偿特性解析式和曲线。仿真和实验验证了该文分析的可行性、有效性及能量优化控制策略不同工作模式划分的正确性。

Steady State Analysis on Series Power Quality Controller Based on Energy Optimized Control

An extensive quantitative analysis is carried out on the steady state of the energy optimized control for series power quality controller (SPQC) based on phasor diagram method. The load current phasor is used as the reference phasor and this leads to a simpler and clearer phasor diagram for quantitative relationship. Three different modes for the energy optimized control strategy of SPQC are then proposed according to different relationship between the source voltage magnitude and the load power factor. Subsequently detailed steady state analysis of SPQC under the energy optimized control is provided for different modes in both voltage sag and voltage swell, from which the analytic expressions and curves for the steady state compensation characteristic of related variables are obtained in different voltage disturbances. In the end, computer simulation and experimental results are shown to verify the validity of all the analysis and different modes of control.