Robust Control of Current Source Rectifier for UPS Applications

Conference: PCIM Europe 2014 - International Exhibition and Conference for Power Electronics, Intelligent Motion, Renewable Energy and Energy Management
05/20/2014 - 05/22/2014 at Nürnberg, Deutschland

Proceedings: PCIM Europe 2014

Pages: 7Language: englishTyp: PDF

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Giuntini, Lorenzo; Crespan, Marco; Furlan, Ivan; Colombi, Silvio (GE Consumer & Industrial SA, Switzerland)

UPS provide protection to sensitive loads, and transformer-based double-conversion units provide top protection. However, traditional thyristor-based rectifiers offer suboptimal input performance, while unity power factor operation may be obtained by implementing the rectifier as a Current Source Converter. This paper details the design and validation of control and protection algorithms of a Current Source Rectifier for UPS applications. Particularly, robustness of such algorithms is verified by exposing the system to events such as voltage distortion, voltage variation (sag, swell) and other stressful conditions.