Sampling-Time Harmonic Control for Cascaded H-Bridge Converters With Thermal Control
| Autor: | Giampaolo Buticchi, Leopoldo G. Franquelo, Youngjong Ko, Marco Liserre, Jose I. Leon, Vito Giuseppe Monopoli, Sergio Vazquez, Abraham Marquez |
|---|---|
| Přispěvatelé: | Universidad de Sevilla. Departamento de Ingeniería Electrónica |
| Rok vydání: | 2020 |
| Předmět: |
Multilevel converters
Total harmonic distortion Materials science 020208 electrical & electronic engineering Topology (electrical circuits) 02 engineering and technology Converters H bridge Pulse width modulation Power (physics) Harmonic analysis Control and Systems Engineering Control theory Harmonic analysis Pulse width modula-tion Multilevel converters 0202 electrical engineering electronic engineering information engineering Pulse width modula-tion Electrical and Electronic Engineering Pulse-width modulation Voltage |
| Zdroj: | IEEE Transactions on Industrial Electronics. 67:2776-2785 |
| ISSN: | 1557-9948 0278-0046 |
| DOI: | 10.1109/tie.2019.2908593 |
| Popis: | Cascaded H-bridge converter (CHB) is a multilevel topology that is a well-suited solution for multiple applications such as flexible ac transmission systems or motor drives. This paper is focused on a CHB where the cells present an aging mismatch. This can be caused by the maintenance operation which forces the replacement of some damaged cells of the converter with new or repaired ones. In this paper, a new improved approach of the active thermal control (ATC) of the CHB using discontinuous pulsewidth modulation (PWM) (D-PWM) is presented. The D-PWM technique is used to reduce the power losses of one cell reducing its average temperature in order to increase its remaining lifetime. However, the combination of D-PWM with traditional phase-shifted PWM (PS-PWM) introduces high harmonic distortion in the output voltage of the CHB converter at twice the carrier frequency. A detailed harmonic distortion analysis of the CHB output voltage when the D-PWM based ATC is active is presented. From this analysis, a modification of the traditional PS-PWM is derived to eliminate the harmonic distortion at twice the carrier frequency. Experimental results show how the ATC using D-PWM is achieved whereas the harmonic distortion around twice the carrier frequency is eliminated. © 1982-2012 IEEE. |
| Databáze: | OpenAIRE |
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