Evaluation of the Performance of a DC-Link Brake Chopper as a DFIG Low-Voltage Fault-Ride-Through Device

Autor:	David J. Atkinson, Bashar Zahawi, Petros Missailidis, G Pannell
Rok vydání:	2013
Předmět:	Crowbar Engineering Wind power Rotor (electric) business.industry Electrical engineering Energy Engineering and Power Technology Fault (power engineering) law.invention Chopper law Control theory Brake Electrical and Electronic Engineering business Low voltage Machine control
Zdroj:	IEEE Transactions on Energy Conversion. 28:535-542
ISSN:	1558-0059 0885-8969
DOI:	10.1109/tec.2013.2261301
Popis:	The performance of the doubly fed induction generator (DFIG) during grid faults is attracting much interest due to the proliferation of wind turbines that employ this technology. International grid codes specify that the generator must exhibit a fault-ride-through (FRT) capability by remaining connected and contributing to network stability during a fault. Many DFIG systems employ a rotor circuit crowbar to protect the rotor converter during a fault. Although this works well to protect the generator, it does not provide favorable grid support behavior. This paper describes an experimental investigation of an alternative FRT approach using a brake chopper circuit across the converter dc link to ensure that the dc-link voltage remains under control during a fault. Two different approaches to chopper control are examined and the resulting FRT performance is compared with that of a conventional crowbar approach. The new chopper-based control methods are experimentally evaluated using a 7.5-kW DFIG test rig facility.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::f4e9ba7c3d48c6c4043dab9261ffb7d6 https://doi.org/10.1109/tec.2013.2261301 Zobrazit plný text záznamu