Improved Current Control of a Quasi-Two-Level PWM-Operated Modular Multilevel Converter

authored by

Jakub Kucka, Axel Mertens

Abstract

Quasi-two-level PWM operation of modular multi-level converters enables a significantly smaller amount of installed module capacitance, even with low output frequencies required for machine drives. This paper presents an implementation of this operation mode with an improved current control, which leads to fast and precise current transitions. The proposed current control is based on the combination of dead-beat control and predictive control, which are implemented using an FPGA. Experimental results on a laboratory prototype prove the feasibility of quasi-two-level PWM operation. The proposed current control is compared to the original one, showing an improved converter behavior.

Organisation(s)

Institute of Drive Systems and Power Electronics

Type

Conference contribution

Pages

2948-2955

No. of pages

8

Publication date

2018

Publication status

Published

Peer reviewed

Yes

ASJC Scopus subject areas

Energy Engineering and Power Technology, Renewable Energy, Sustainability and the Environment, Control and Optimization, Computer Networks and Communications, Hardware and Architecture, Information Systems and Management

Sustainable Development Goals

SDG 7 - Affordable and Clean Energy

Electronic version(s)

https://doi.org/10.1109/ECCE.2018.8558008 (Access: Closed)