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| Content Provider | IET Digital Library |
|---|---|
| Author | Broadmeadow, Mark A. H. Sands, Kenneth D. |
| Abstract | Carrier interleaved pulse width modulated modular multilevel converters provide multiple benefits including increased effective switching frequency, switching frequency harmonic elimination, and reduced filter requirements. For converters comprising high numbers of switching modules, control is often distributed across multiple controllers, making carrier-phase synchronisation challenging. This paper presents a technique for carrier-phase synchronisation and phase offset distribution for controllers in a ring network comprising duplex serial links. The proposed method is self-organising, with equal phase offset automatically achieved across connected nodes. A key advantage of the proposed technique is capacity to enable fault tolerance, through automatic phase offset redistribution in the case of switching modules being removed from the system. An experimental prototype is implemented and evaluated using three FPGA nodes connected via 6.25 Gbps full-duplex fibre-optic links, with phase offset accuracy to within 0.1 degrees demonstrated for 25 kHz pulse width modulation. |
| Starting Page | 4283 |
| Ending Page | 4287 |
| Page Count | 5 |
| Volume Number | 2019 |
| e-ISSN | 20513305 |
| Issue Number | Issue 17, Jun (2019) |
| Alternate Webpage(s) | https://digital-library.theiet.org/content/journals/joe/2019/17 |
| Alternate Webpage(s) | https://digital-library.theiet.org/content/journals/10.1049/joe.2018.8057 |
| Journal | The Journal of Engineering |
| Publisher | The Institution of Engineering and Technology |
| Publisher Date | 2019-01-22 |
| Access Restriction | Open |
| Rights License | Creative Commons Attribution License (http://creativecommons.org/licenses/by/3.0/) |
| Subject Keyword | Automatic Phase Automatic Phase Offset Redistribution Bit Rate 6.25 Gbit/s Carrier Interleaved Pulse Width Modulated Modular Multilevel Converter Carrier Synchronisation Carrier-phase Synchronisation Control of Electric Power System Distributed Control Duplex Serial Link Effective Switching Frequency Fault Tolerance FPGA Node Frequency 25.0 KHz Frequency Harmonic Elimination Full-duplex Fibre-optic Link Harmonics Suppression HVDC Power Converter Jitter Modular Fault-tolerant Converter Multiple Controller Multivariable Control System Organising Technique Phase Offset Accuracy Phase Offset Distribution Power Converter Power Supplies to Apparatus PWM Power Converter Reduced Filter Requirements Ring Network Self Adjusting Control System Self Adjusting System Switching Converter Switching Frequency Harmonic Elimination Switching Module Synchronisation Voltage-source Converter |
| Content Type | Text |
| Resource Type | Article |
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