Small-Signal Analysis of Parallel Connected Voltage Source Inverters Using a Frequency and Voltage Droop Control Including an Additional Phase Shift

Autor:	Luiz C. G. Freitas, Luiz Carlos de Freitas, Joao B. Vieira, Henrique José Avelar, Wanderley Alves Parreira, Ernane Antônio Alves Coelho
Rok vydání:	2014
Předmět:	Engineering business.industry Voltage divider Phase (waves) Energy Engineering and Power Technology Root locus Computer Science Applications Power (physics) Control and Systems Engineering Control theory Inverter Voltage droop Voltage source Electrical and Electronic Engineering business
Zdroj:	Journal of Control, Automation and Electrical Systems. 25:597-607
ISSN:	2195-3899 2195-3880
DOI:	10.1007/s40313-014-0143-5
Popis:	This paper presents a small-signal analysis of a stand-alone ac system composed by two or more voltage source inverters connected in parallel. Each inverter is controlled using a modified frequency and voltage droop method, which consists of the conventional frequency and voltage droop method including a further loop that feeds the power deviation from the nominal value back into the inverter phase. The proposed small-signal model of the system is presented, which is validated by simulation results. A root locus of the system is presented, which shows that the higher is the gain of further loop, the higher is the damping of the system. In order to show the viability of the proposed controller and proposed model, the results obtained from the model are compared with simulations and experimental results.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::360bb5afad39705462ae0ade2d96b2d1 https://doi.org/10.1007/s40313-014-0143-5 Zobrazit plný text záznamu Full text from SpringerLink