Experimental Comparison of Model Predictive Control and Cascaded Control of the Modular Multilevel Converter

Author

Bocker, Joachim ; Freudenberg, Benjamin ; The, Andrew ; Dieckerhoff, Sibylle

Author_Institution

Dept. of Power Electron., Tech. Univ. Berlin, Berlin, Germany

Volume

30

Issue

1

fYear

2015

fDate

Jan. 2015

Firstpage

422

Lastpage

430

Abstract

This paper evaluates two different concepts for the control of the modular multilevel converter (MMC). Generally aiming at medium voltage applications, the considered MMC topology has a low number of submodules, and a pulse-width modulation (PWM) scheme is applied. A model predictive control (MPC) algorithm is developed and experimentally compared to a cascaded control scheme based on conventional PI controllers, which has been proposed by Hagiwara and Akagi. Steady-state and dynamic system performance as well as computational power requirements are discussed. The basis for the comparison is a scaled converter test bench operating from 560-V dc voltage.

Keywords

PI control; PWM power convertors; cascade control; predictive control; MMC topology; MPC algorithm; PI controllers; PWM scheme; cascaded control scheme; computational power requirements; dynamic system performance; model predictive control algorithm; modular multilevel converter; pulse-width modulation scheme; scaled converter test bench; steady-state performance; voltage 560 V; Capacitors; Cost function; Modulation; Predictive control; Switches; Voltage control; Circulating current control; model predictive control (MPC); modular multilevel converter (MMC); voltage source converter;

fLanguage

English

Journal_Title

Power Electronics, IEEE Transactions on

Publisher

ieee

ISSN

0885-8993

Type

jour

DOI

10.1109/TPEL.2014.2309438

Filename

6754184