New Voltage Balancing Technique Based on Carrier-Disposition Pulse Width Modulation for Modular Multilevel Converter

2020 ◽  
Author(s):  
Mahdi Jafari ◽  
Sepehr Saadatmand ◽  
Amin Shojaeighadikolaei ◽  
Fatemehalsadat Jafarishiadeh ◽  
Arman Ghasemi ◽  
...  
Keyword(s):  
Pulse Width ◽  
Pulse Width Modulation ◽  
Modular Multilevel Converter ◽  
Multilevel Converter ◽  
Voltage Balancing

VHDL Implementation of Capacitor Voltage Balancing Control with Level-Shifted PWM for Modular Multilevel Converter

2016 ◽  
Vol 7 (1) ◽  
pp. 94
Author(s):  
Chuen Ling Toh ◽  
Lars Einar Norum
Keyword(s):  
Pulse Width Modulation ◽  
Power Transmission ◽  
Small Scale ◽  
Modular Multilevel Converter ◽  
Multilevel Converter ◽  
Voltage Balancing ◽  
High Voltage Direct Current ◽  
Capacitor Voltage ◽  
Balancing Control ◽  
Vhdl Implementation

Power electronics converters are a key component in high voltage direct current (HVDC) power transmission. The modular multilevel converter (MMC) is one of the latest topologies to be proposed for this application. An MMC generates multilevel output voltage waveforms which reduces the harmonics contents significantly. This paper presents a VHDL implementation of the capacitor voltage balancing control and level-shifted pulse width modulation (LSPWM) for MMC. The objective is to minimize the processing time with minimum gate counts. The design details are fully described and validated experimentally. An experiment is conducted on a small scale MMC prototype with two units of power cells on each arm. The test results are enclosed and discussed.

scholarly journals Research of modular multilevel converter with phase-shifted pulse-width modulation

2021 ◽  
Vol 280 ◽  
pp. 05009
Author(s):  
Ihor Kozakevych ◽  
Roman Siyanko
Keyword(s):  
Mathematical Model ◽  
Pulse Width ◽  
Output Voltage ◽  
Pulse Width Modulation ◽  
Electric Energy ◽  
Point Of View ◽  
Modular Multilevel Converter ◽  
Multilevel Converter ◽  
Energy Converter ◽  
Circulating Current

The work is devoted to the study of performance of a multilevel electric energy converter using phase-shifted pulse-width modulation. Equations describing the state of a dynamic system multilevel converter - load are investigated and a mathematical model of the system in Matlab / Simulink environment has been constructed. Variants of implementation of phase-shifted pulse-width modulation systems from the point of view of influence on harmonics of output voltage and magnitude of circulating current in the converter are investigated.

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