作　　者： ; ; ; ;

机构地区： 广东工业大学自动化学院

出　　处： 《电力自动化设备》 2010年第9期28-32,共5页

摘　　要： 针对矩阵变换器(MC)输出侧电流易受负载扰动影响,提出一种基于广义预测的MC电流环控制方案。将MC虚拟等效成输入侧为整流器和输出侧为逆变器相连,推导了输出侧电压、电流方程,建立MC的受控自回归积分滑动平均模型,通过Park变换,将输出电流分解成dq坐标下的直流分量。基于广义预测控制策略,设计输出侧电流闭环控制器,跟踪期望电流d、q轴分量,维持输出电流的空间矢量恒定,以消除内、外扰动和不平衡的影响。仿真结果表明:和传统开环控制方案相比,基于广义预测的闭环控制方案减小了MC的输出电流谐波分量,改善了输出电流波形,使MC获得良好的动态特性,对输出扰动抑制效果显著。 As the output current of MC（Matrix Converter） is susceptible to load disturbance,a GPC（Generalized Predictive Control）-based close-loop current control scheme is presented.The MC is equivalent to a rectifier-inverter circuit and the CARIMA model of MC is established based on the analysis of output current and voltage equations.With Park transformation,the output current is decomposed into two direct currents in d-q coordinates.A close-loop current controller is designed at the output side to track the d-axis and q-axis components of reference currents and maintain the space vector of output currents constant,thus eliminating the effects of internal/external disturbances and imbalance.The simulative results indicate that,compared with the conventional open-loop control strategies,the close-loop control strategy based on GPC reduces the output current harmonic components of MC,improves the output current waveform,and endows the MC with excellent dynamic performance and output disturbance restraint.

关 键 词： 矩阵变换器 广义预测控制 电流跟踪 闭环控制 受控自回归积分滑动平均模型

领　　域： [电气工程] [自动化与计算机技术] [自动化与计算机技术]