Multilevel Inverter Based Distribution STATCOM: Application of the Cross-Switched Multilevel Inverter | IEEE Conference Publication | IEEE Xplore

Multilevel Inverter Based Distribution STATCOM: Application of the Cross-Switched Multilevel Inverter


Abstract:

Multilevel inverters are widely used in various applications due to their interesting features. They can be connected to the grid as a STATCOM to improve grid power quali...Show More

Abstract:

Multilevel inverters are widely used in various applications due to their interesting features. They can be connected to the grid as a STATCOM to improve grid power quality and voltage control. In this paper, a distributed STATCOM (DSTATCOM) is provided based on cross-switched multilevel inverter which is connected to a low voltage distribution system. The multilevel topology employed in this paper, uses fewer switches for a certain number of output voltage levels than other conventional topologies and produces output voltage with high quality and lower harmonic distortion. In the proposed DSTATCOM system, a simple control method for balancing the capacitors voltage is presented. Also, the proposed DSTATCOM is compared with the conventional 3-level and 5-level CHB inverter based DSTATCOM. The simulation of the studied system is carried out in the MATLAB/Simulink software and the results are presented and discussed.
Date of Conference: 08-10 May 2018
Date Added to IEEE Xplore: 27 September 2018
ISBN Information:
Conference Location: Mashhad, Iran

I. Introduction

In the conventional AC power systems, it is necessary to manage the reactive power in order to satisfactory operation of the system and to avoid extra voltage drops on the system impedances. To accomplish this, there is a need for installing compensation equipment in different points of the system. The Static Synchronous Compensator (commonly called STATCOM) is a parallel-connected converter initially aimed to compensate for reactive power in the power systems. It is usually fed from a capacitor and hence cannot exchange active power with the grid. The core of the STATCOM is a voltage-source converter (VSC) or a current-source converter (CSC); the latter is not as common as the first one mentioned.

References

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