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中文摘要：
单相电压源整流器（VSR）是一种四象限的AC-DC变换器,可以应用于单相有源电力滤波器和固态变压器。为了提高功率等级,需要采用多个单相VSR输入并联和输出并联的工作方式,为此需要解决各级单相VSR之间的均流问题。提出了一种基于无源性控制的均流方案,首先在理论上证明了单级和两级单相VSR均为无源性系统,且可以产生良好的均流效果。在此基础上,采用MATLAB/SIMULINK进行了仿真验证。结果表明,在功率电路主要参数不一致的情况下,采用无源性控制、交错控制的两级并联单相VSR具有良好的均流效果,网侧功率因数接近于1,输出直流电压幅值可调,并且允许多级单相VSR并联。
英文摘要：
Single-phase voltage source rectifier（VSR） is a four-quadrant AC/DC converter,which can be used in many applications,such as single-phase active power filter and solid state transformer.In order to achieve much higher output power,it is applicable to employ parallel connections both at its input side and output side.However,it is required to solve the issue of current sharing among the different single-phase VSRs.Considering the above referred,a current sharing method based on passivity theory was proposed.At first,what proved was that single-stage VSR and two-stage single-phase VSR were characteristic of passivity-based system theoretically,which could bring about easy current sharing.Then the above theoretical analysis was simulated and verified by means of MATLAB/SIMULINK.The results show that passivity-based control and interleaving control can achieve current sharing even in case of inconsistent parameters,and the power factor at grid side approaches one and DC output voltage can be regulated.Thus it is allowed that more single-stage VSRs are connected in parallel both at input side and output side without current sharing problem.
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