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| Content Provider | IET Digital Library |
|---|---|
| Author | Ronanki, Deepak Williamson, Sheldon S. |
| Abstract | The distinctive features such as fault-tolerability, modularity, power and voltage scalability have propelled modular multilevel converters (MMCs) as one of the emerging power converter topologies for marine applications. Pulse-width modulation (PWM) schemes are widely used to control the MMCs due to their good control capability and ability to operate at higher switching frequencies. However, the required number of carriers for gating signal generation drastically increases with the submodule count per arm in an MMC. Moreover, these carriers should be accurately synchronised with each other to generate high power quality waveforms. However, it is hard to establish accurate synchronisation between these carriers due to the sampling issues, memory limitations, and computational delays. In addition, the MMC demands reconfiguration of PWM carriers and control strategy for voltage scalability and retrofit applications. To avoid these issues, a simple PWM scheme using one carrier is proposed in this study. The main advantage of the proposed scheme is an easy extension to the n-level MMC with a wide range of output voltage levels. The effectiveness of the proposed PWM scheme along with the capacitor voltage balancing control is demonstrated through detailed simulations and verified experimentally under steady-state and dynamic conditions. |
| Starting Page | 3403 |
| Ending Page | 3410 |
| Page Count | 8 |
| ISSN | 17554535 |
| Volume Number | 12 |
| e-ISSN | 17554543 |
| Issue Number | Issue 13, Nov (2019) |
| Alternate Webpage(s) | https://digital-library.theiet.org/content/journals/iet-pel/12/13 |
| Alternate Webpage(s) | https://digital-library.theiet.org/content/journals/10.1049/iet-pel.2018.6362 |
| Journal | IET Power Electronics |
| Publisher Date | 2019-05-07 |
| Access Restriction | Open |
| Rights Holder | © The Institution of Engineering and Technology |
| Subject Keyword | Ability Accurate Synchronisation Capacitor Voltage Balancing Control Control of Electric Power System Control Strategy Distinctive Features Emerging Power Converter Topology Good Control Capability High Power Quality Waveform Higher Switching Frequency Level MMC Marine Application Modern Electric Ships Modular Multilevel Converter New Modulation Scheme Other Power Apparatus And Electric Machine Output Voltage Levels Power Capacitor Power Converter Power Supplies to Apparatus Power Supply Quality Pulse-width Modulation Scheme PWM Carriers PWM Invertors PWM Power Converter Ships Signal Generation Simple PWM Scheme Switching Converter Voltage Control Voltage Scalability |
| Content Type | Text |
| Resource Type | Article |
| Subject | Electrical and Electronic Engineering |
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