A modified voltage balancing sorting algorithm for the modular multilevel converter: Evaluation for staircase and phase-disposition PWM
| Autor: | Ricard Picas, Josep Pou, Rosheila Darus, Georgios Konstantinou, Vassilios G. Agelidis, Salvador Ceballos |
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| Přispěvatelé: | Universitat Politècnica de Catalunya. Departament d'Enginyeria Electrònica, Universitat Politècnica de Catalunya. TIEG-P - Terrassa Industrial Electronics Group -Power |
| Jazyk: | angličtina |
| Rok vydání: | 2015 |
| Předmět: |
Engineering
education Corrents elèctrics FUNDAMENTAL SWITCHING FREQUENCY law.invention law Control theory Electric currents Electronic engineering modular multilevel converter (MMC) Power semiconductor device Electrical and Electronic Engineering Modulation (Electronics) Capacitor voltage balancing business.industry Rotary converters pulse width modulation Enginyeria electrònica [Àrees temàtiques de la UPC] Converters Power (physics) Convertidors rotatius Capacitor Modulation modulation technique business Algorithm Modulació (Electrònica) Pulse-width modulation SYSTEM Voltage |
| Zdroj: | Recercat. Dipósit de la Recerca de Catalunya instname UPCommons. Portal del coneixement obert de la UPC Universitat Politècnica de Catalunya (UPC) |
| Popis: | This paper introduces a low complexity implementation of the voltage balancing algorithm aiming to reduce the switching frequency of the power devices in modular multilevel converters (MMCs). The proposed algorithm features a relatively simple implementation without any conditional execution requirements and is easily expandable regardless of the number of submodules (SMs). Two modulation techniques are evaluated, namely the staircase modulation and the phase-disposition pulse width modulation (PD-PWM) under the conventional and the proposed algorithm. Using a circulating current controller in an MMC with 12 SMs per arm, PD-PWM yields better results compared to the staircase modulation technique. The test condition for this comparison is such that the power devices operate at a similar switching frequency and produce similar amplitudes to the capacitor voltage ripples in both modulation techniques. The results are verified through extensive simulations and experiments on a low power phase-leg MMC laboratory prototype. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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