Open AccessResearch of Modulation and Control Strategy of Modular Multilevel Inverter
Author(s) -
YaTing Chang,
XU Xiao-li,
Xiaobei Yin,
Huaiqiang Yu
Publication year - 2021
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/2005/1/012173
Subject(s) - modular design , pulse width modulation , matlab , modulation (music) , modular programming , electronic engineering , computer science , voltage , cascade , capacitor , inverter , harmonic , component (thermodynamics) , topology (electrical circuits) , engineering , control theory (sociology) , control (management) , electrical engineering , physics , quantum mechanics , chemical engineering , artificial intelligence , acoustics , thermodynamics , programming language , operating system
As a new multilevel converter structure, modular multilevel converter (MMC) has many outstanding advantages, such as high degree of modularization and easy cascade expansion, which greatly promotes the development and application of flexible DC transmission technology. In this paper, the modular multilevel inverter is the main research object, its topology and multilevel generation mechanism are analysed, and the capacitor voltage of sub modules is balanced based on the carrier phase shifted PWM strategy. The MMC simulation model is built on the MATLAB/Simulink software platform. According to the simulation results, the feasibility of the modulation and control strategy in reducing the harmonic component of output voltage and maintaining the stability of capacitor voltage is verified.