Extremely Low Frequency PS-PWM-based Technique for Cascaded H-Bridge Converters with Grid Voltage Compensation Capability
Cascaded H-Bridge Converters (CHB) are good can- didates for many industrial applications. Among the modulation techniques that can be applied to CHB converters, the Phase- shifted PWM method (PS-PWM) provides very good harmonic quality being the most popular modulation technique at the expense of p...
| Autores: | , , , , |
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| Formato: | artículo |
| Estado: | Versión aceptada para publicación |
| Fecha de publicación: | 2023 |
| País: | España |
| Recursos: | Universidad de Sevilla (US) |
| Repositorio: | idUS. Depósito de Investigación de la Universidad de Sevilla |
| OAI Identifier: | oai:idus.us.es:11441/173919 |
| Acesso em linha: | https://hdl.handle.net/11441/173919 https://doi.org/10.1109/TIE.2023.3274870 |
| Access Level: | acceso abierto |
| Palavra-chave: | Harmonic analysis multilevel converters pulse width modulation (PWM) |
| Resumo: | Cascaded H-Bridge Converters (CHB) are good can- didates for many industrial applications. Among the modulation techniques that can be applied to CHB converters, the Phase- shifted PWM method (PS-PWM) provides very good harmonic quality being the most popular modulation technique at the expense of presenting high switching losses. On the contrary Block Switching technique as well as Selective Harmonic elimina- tion/mitigation (SHE/SHM) techniques provides lower switching frequency and losses with a lower harmonic quality. Additionally with these techniques the converter operation becomes stiff. In this work a modification of PS-PWM based on an extremely low frequency carrier is proposed with the objective of achieving both low switching losses and an acceptable harmonic quality, simultaneously. The main advantage of the proposed solution is the capability of adjusting the phase-shift angle among the carriers to compensate for harmonic grid voltage disturbance. Several experimental results have been reported to demonstrate the good performance of the proposed modulation technique |
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