Multi‐level inverter with combined T‐type and cross‐connected modules
| Autor: | Mohammad Khenar, Amir Taghvaie, Jafar Adabi, Mohammad Rezanejad |
|---|---|
| Rok vydání: | 2018 |
| Předmět: |
Computer science
business.industry 020209 energy 020208 electrical & electronic engineering Electrical engineering Topology (electrical circuits) Hardware_PERFORMANCEANDRELIABILITY 02 engineering and technology Modular design Peak inverse voltage Series and parallel circuits law.invention Capacitor Hardware_GENERAL law Hardware_INTEGRATEDCIRCUITS 0202 electrical engineering electronic engineering information engineering Waveform Inverter Electrical and Electronic Engineering business Voltage |
| Zdroj: | IET Power Electronics. 11:1407-1415 |
| ISSN: | 1755-4543 |
| DOI: | 10.1049/iet-pel.2017.0378 |
| Popis: | This study presents a new topology of switched-capacitor (SC) multilevel inverter, which is able to step-up input DC voltage to a multilevel AC waveform. This single source inverter is designed based on series connection of the capacitors that charged by input DC sources through a SC network. The proposed modular inverter uses famous T and cross-connected modules that can be simply extended to higher output voltages without increasing the amount of total standing voltage and peak inverse voltage of switches. It generates positive and negative voltage levels inherently, which eliminates requirements of H-bridge inverters that are traditionally used to achieve a bipolar output voltage. Analysis shows that the voltage stress on components, cost, efficiency and losses are kept in acceptable range especially for higher-voltage levels. Capacitor's voltage self-balancing is another inherent advantage of this modular topology which leads to simplify control strategy and eliminate excess balancing circuit. Performance of a six-step proposed structure is evaluated by theoretical analysis, simulation and experimental results. |
| Databáze: | OpenAIRE |
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