DC-Link Voltage Ripple Compensation for Multilevel Active-Neutral-Point-Clamped Converters Operated With SHE-PWM

Autor:	Georgios Konstantinou, Sridhar R. Pulikanti, Vassilios G. Agelidis
Rok vydání:	2012
Předmět:	Physics Ripple Modulation index Energy Engineering and Power Technology Converters Compensation (engineering) law.invention Capacitor Control theory law Harmonics Harmonic Electronic engineering Electrical and Electronic Engineering Pulse-width modulation
Zdroj:	IEEE Transactions on Power Delivery. 27:2176-2184
ISSN:	1937-4208 0885-8977
DOI:	10.1109/tpwrd.2012.2209207
Popis:	This paper presents a dc-link voltage ripple compensation method for flying-capacitor (FC)-based active neutral-point-clamped multilevel converters operating under selective harmonic elimination pulsewidth modulation. The method is based on feedforward modification of the modulation index according to the ripple on the dc-link voltage, effectively altering the switching control functions. The low-order harmonics in the output due to the presence of the dc-link ripple are eliminated. In addition, a control strategy that actively regulates the flying capacitor voltages of each phase to the reference value and controls the neutral point voltage deviation is implemented. The performance of the dc ripple harmonic compensation method and regulation strategies are evaluated through simulation and experimental results from a three-phase, five-level laboratory prototype.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::6314718713e1cfa78994ab1402ea211c https://doi.org/10.1109/tpwrd.2012.2209207 Zobrazit plný text záznamu