The main problems with the quality of electricity are voltage fluctuations like the voltage drop and swell, which impact the reliability of electrical networks. The use of dynamic voltage restorer and thus secure sensitive loads are an effective solution to minimize this voltage sag or swell. The base structure of the DVR is created using an inverter, DC connecting condenser and injection transformer. Inverters are used to compensate for the voltage drop / swell and other problems including flickering, current harmonic interference in system. DVR inverter's various property includes voltage levels, unbalanced power compensation requirements and/or dc link voltage requirements. This paper aims to analyze the number of phases, scale, voltage and structure of different inverters and controller topologies. In addition, in this analysis are presented each of the properties of inverters, controllers and compensation.