带谐波补偿的并网变流器统一控制策略  

Unified Control Strategy of Grid-connected Converter with Harmonic Compensation

作　　者：黄太昱 胡立坤[1,2] 吕智林[2] 李卓[2] 

机构地区：[1]广西电力系统最优化与节能技术重点实验室,广西南宁530004 [2]广西大学电气工程学院,广西南宁530004

出　　处：《电气传动》2017年第6期36-39,共4页Electric Drive

基　　金：国家自然科学基金(61364027);广西科学研究与技术开发项目(1598008-3)

摘　　要：依据三相电压型PWM变流器系统工作特性,提出一种具有谐波补偿功能的并网变流器统一控制策略。变流器可以补偿非线性负载所引起的网侧电流畸变;同时,保证并网变流器的4象限运行,实现有功电流与无功电流的独立控制。在自然坐标下,将网侧指令电流与检测所得非线性负载电流作差得到统一控制所需电流指令,利用所测网侧电压信号按照对指令电流进行定向。最后,通过实验证明了所提策略的正确性与有效性。According to the characteristics of three-phase voltage PWM converter system,a unified controlstrategy of grid-connected converter with harmonic compensation function was proposed. The converter couldcompensate the network side current distortion caused by the nonlinear load. Meanwhile,the four-quadrant operation ofthe grid-connected converter could be ensured,and the active current and reactive current could be controlledindependently. In the natural coordinates,the voltage signals of source were employed to derive the reference currentsof converter,which caused by the difference between grid-side of the command current and the detection of non-linearload current. Finally,the experiment test and verified the correct and using of this method.

关 键 词：变流器 自然坐标定向 非线性负载 谐波治理 

分 类 号：TM461[电气工程—电器]