The Closed-Loop Control of the Half-Bridge-Based MMC Drive with Variable DC-Link Voltage

被引：0

作者：

Espinoza, Mauricio ^{[1
]}

Diaz, Matias ^{[2
]}

Espina, Enrique ^{[2
]}

Mora, Andres ^{[3
]}

Letelier, Arturo ^{[4
]}

Donoso, Felipe ^{[4
]}

Cardenas, Roberto ^{[4
]}

机构：

[1] Univ Costa Rica, Sch Elect Engn, San Jose 115012060, Costa Rica

[2] Univ Santiago Chile, Dept Elect Engn, Ave Ecuador 3519, Santiago 9170124, Chile

[3] Univ Tecn Feder Santa Maria, Dept Elect Engn, Ave Espana 1680, Valparaiso 234000, Chile

[4] Univ Chile, Dept Elect Engn, Santiago 8370451, Chile

来源：

ELECTRONICS | 2023年 / 12卷 / 13期

关键词：

modular multilevel converter; machine drive; dynamic modeling; MODULAR MULTILEVEL CONVERTER; CONTROL-SYSTEM; MOTOR DRIVE;

D O I：

10.3390/electronics12132791

中图分类号：

TP [自动化技术、计算机技术];

学科分类号：

0812 ;

摘要：

The modular multilevel converter (MMC) based on half-bridge modules is a power converter topology suitable for high-power medium-voltage variable-speed drives. However, the voltage of its flying capacitors is negatively affected when low frequencies appear at the AC port. This paper analyzes the influence of using a variable DC port voltage in a machine-side MMC by implementing a closed-loop approach, ensuring a constant voltage fluctuation in the capacitors of the MMC during the whole operating range. The effectiveness of the proposed control scheme is demonstrated through simulation studies and experimental validation tests conducted using a 7.5 kW experimental prototype composed of an induction machine fed by an MMC with 18 half-bridge cells.

引用

页数：15

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