Multi-objective Modulation Scheme Development for Optimal Control of Cascaded H-bridge (CHB) Multilevel Inverters
| Autor: | Marc Hiller, D. Mahinda Vilathgamuwa, M. H. Etesami, Geoff Walker, Negareh Ghasemi |
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| Rok vydání: | 2019 |
| Předmět: |
Total harmonic distortion
Offset (computer science) 020209 energy 020208 electrical & electronic engineering Switching frequency 02 engineering and technology H bridge Optimal control Topology 0202 electrical engineering electronic engineering information engineering Waveform Mathematics Voltage DC bias |
| Zdroj: | 2019 IEEE 13th International Conference on Power Electronics and Drive Systems (PEDS). |
| DOI: | 10.1109/peds44367.2019.8998935 |
| Popis: | The problem is defined as seeking optimal operating parameters for a Cascaded H-bridge (CHB) converter under multi-objective scenarios. An advanced modulation technique is considered to address the non-ideal situations where dc-link voltage ripples are present. Higher quality waveforms are achievable by adding to the optimization degree of freedom with more number of decision variables. DC offset value ( $V_{offset}$ and chopping or switching frequency ( $f_{chop}$ ) are added as additional variables, alongside dc-link voltage levels and firing angles, to be optimally determined as modulation parameters. This study examines indices such as $f_{chop}$ , weighted total harmonic distortion (WTHD), and deviation rate (DR) to obtain a systematic platform for specific design priorities. An improved converter performance with reduced switching loss, suppressed harmonic content, and resilience against dc-link ripples is of key concern in this study. |
| Databáze: | OpenAIRE |
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