A comparison of two types of storageless DVR with a passive shunt converter

摘要

A passive shunt converter is usually used as an energy absorbing circuit in DVR. According to the location of passive shunt converter, DVR can be ascribed into two typical types: DVR with supply-side shunt converter and DVR with load-side shunt converter. They have differences in operation principle, comparisons focused on cost and performance between them will be helpful for the selection of system topology of DVR. In this paper, dc-link voltage range and parameter design procedure of these two types is analyzed, then a detailed comparison including inverter rating and passive converter rating between them is made under a unified compensation target. Both theoretical analysis and simulation results show that DVR with load-side passive converter has a smaller inverter rating compared to that of DVR with supply-side passive converter, thus DVR with load-side passive shunt converter has a lower cost.