Work

Control strategies for capacitor voltage balancing in modular multilevel converters

Year: 2016

Type: conference-paper

Abstract: Different schemes of modified conventional sorting algorithms with low complexity are proposed in order to balance the voltages of submodule (SM) capacitors for the modular multilevel converter (MMC). Two different procedures are investigated in this study. The main idea is to achieve voltage balance within the MMC arms with fewer current sensors. The two different methods are examined under different operating conditions; for instance, with a sudden change in the DC-source or when different load values are applied. The advantage of such sensor-less control methods is to simplify hardware communications in general. Moreover, the reliability of the MMC is also improved. Simulation analyses of a single-phase four-level MMC are conducted to show the effectiveness of the proposed methods.

Source: International Renewable Energy Congress

DOI: 10.1109/irec.2016.7478938

Authors: Osama Abushafa, Shady Gadoue, Mohamed Dahidah, David Atkinson, Salaheddine Ethni

Institution: Newcastle University

Language: English

Topic: HVDC Systems and Fault Protection

Subfield: Electrical and Electronic Engineering

Field: Engineering

Domain: Physical Sciences

SDG: Industry, innovation and infrastructure

Open Access status: green

Funder: Ministry of Education, Libya