Control Strategy Based on Arm-Level Control for Output and Circulating Current of MMC in Stationary Reference Frame

被引：6

作者：

Uddin, Waqar ^{[1
]}

Busarello, Tiago D. C. ^{[2
]}

Zeb, Kamran ^{[3
]}

Khan, Muhammad Adil ^{[4
]}

Yedluri, Anil Kumar ^{[1
]}

Kim, Hee-Je ^{[1
]}

机构：

[1] Pusan Natl Univ, Dept Elect Engn, Busan 46241, South Korea

[2] Univ Fed Santa Catarina, Dept Engn, BR-89036256 Blumenau, Brazil

[3] Natl Univ Sci & Technol, Sch Elect & Comp Sci SEECS, Islamabad 44000, Pakistan

[4] Air Univ, Dept Elect & Comp Engn, Islamabad 44000, Pakistan

来源：

ENERGIES | 2021年 / 14卷 / 14期

关键词：

modular multilevel converter; arm current; circulating current; proportional resonant controller; MODULAR MULTILEVEL CONVERTER; PROPORTIONAL-RESONANT CONTROLLERS; MODEL-PREDICTIVE CONTROL; CASCADED CONTROL;

D O I：

10.3390/en14144160

中图分类号：

TE [石油、天然气工业]; TK [能源与动力工程];

学科分类号：

0807 ; 0820 ;

摘要：

This paper proposed a control method for output and circulating currents of modular multilevel converter (MMC). The output and circulating current are controlled with the help of arm currents, which contain DC, fundamental frequency, and double frequency components. The arm current is transformed into a stationary reference frame (SRF) to isolate the DC and AC components. The AC component is controlled with a conventional proportional resonant (PR) controller, while the DC component is controlled by a proportional controller. The effective control of the upper arm and lower arm ultimately controls the output current so that it delivers the required power to the grid and circulating current in such a way that the second harmonic component is completely vanished leaving behind only the DC component. Comparative results of leg-level control based on PR controller are included in the paper to show the effectiveness of the proposed control scheme. A three-phase, five-level MMC is developed in MATLAB/Simulink to verify the effectiveness of the proposed control method.

引用

页数：20