Investigation of cell voltages and arm currents in double-star modular multilevel converters
| Autor: | Yuan-Chih Chang, T.-C. Chou, J.-W. Huang, Tai-Bor Wu, J.-S. Chen |
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| Rok vydání: | 2017 |
| Předmět: |
0209 industrial biotechnology
Engineering business.industry 020208 electrical & electronic engineering Ripple Electrical engineering 02 engineering and technology Converters Modular design law.invention Harmonic analysis Capacitor 020901 industrial engineering & automation law Power Balance 0202 electrical engineering electronic engineering information engineering Maximum power transfer theorem business Voltage |
| Zdroj: | 2017 IEEE 3rd International Future Energy Electronics Conference and ECCE Asia (IFEEC 2017 - ECCE Asia). |
| DOI: | 10.1109/ifeec.2017.7992096 |
| Popis: | This study investigates the cell voltages and arm currents in double-star modular multilevel converters (DSMMCs) based on power balance and current tracking control law. DSMMCs have been widely applied to static synchronous compensators, high-voltage direct-current transmission, back-to-back power transfer systems, wind/solar power generation and battery storage systems. The size of capacitors in each cell plays a critical role in designing an MMC, and it requires to find explicit expressions for cell voltages which highly relate to their arm currents. This paper presents unique approaches to deriving cell voltages in terms of arm currents and current tracking control laws, from which cell-voltage ripple reduction can be achieved. Moreover, optimization of cell voltages and arm currents can also be conducted. Simulation results obtained from a 10 kW single-phase MMC have verified the analysis and discussion. |
| Databáze: | OpenAIRE |
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