一种矩阵变换器网侧功率因数控制策略  

Grid Side Power Factor Control Strategy for Matrix Converter

作　　者：国海[1] 权悦[1] 孙雯[1] 范智平[1] 

机构地区：[1]安徽科技学院,安徽凤阳233100

出　　处：《系统仿真学报》2016年第5期1242-1246,共5页Journal of System Simulation

基　　金：安徽省高校自然科学研究重点项目(KJ2016A170);安徽科技学院人才引进项目(ZRC2014467);国家级大学生创新训练项目(201410879009)

摘　　要：矩阵变换器的调制策略未考虑网侧滤波器的影响,仅能控制变换器输入侧电流与电网电压相位一致,而滤波器电容电流使得网侧电流相位超前,降低了变换器网侧功率因数。针对该问题,研究了矩阵变换器的数学模型,分析了网侧实际功率因数角与系统参数之间的关系,提出一种网侧电流闭环控制策略,该策略以同步旋转坐标系下网侧电流为控制目标,通过调整变换器输入测电流来间接控制网侧电流,实现网侧功率因数的准确控制。仿真结果表明该策略能在全功率范围内使网侧保持较高功率因数,提高系统效率。Since input filter is usually ignored in the modulation strategy for matrix converter, only the input current of converter is controlled in the same phase with grid voltage. Phase advance of grid current will come about as a result of current of capacitor and the power factor of grid side will be reduced. To solve this problem, the mathematical model of matrix converter was analyzed and the relationship between the real power factor and parameters of the system was studied. A grid current closed-loop control strategy was proposed. As the control objective of the strategy, the grid current was indirectly controlled by adjusting the input current of converter. In this way, the power factor of grid side was able to be controlled correctly. The effectiveness and feasibility of the new control method were confirmed by the simulation results, the power factor keeps high regardless of the system power.

关 键 词：矩阵变换器 输入滤波器 电流闭环 功率因数 

分 类 号：TP391.9[自动化与计算机技术—计算机应用技术]