Title :
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
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;
Journal_Title :
Power Electronics, IEEE Transactions on
DOI :
10.1109/TPEL.2014.2309438
