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Erschienen in:
2017 | OriginalPaper | Buchkapitel
A Novel Bidirectional Two-Stage Inverter Based UPS System
verfasst von : Muhammad Faizal Abdullah, Shahid Iqbal, Dahaman Ishak
Erschienen in: 9th International Conference on Robotic, Vision, Signal Processing and Power Applications
Verlag: Springer Singapore
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Abstract
This paper presents a novel bidirectional two-stage inverter based UPS system. In this system, a two-stage inverter is implemented where it consists of two power converters namely full-bridge LLC resonant DC-DC converter with high-step-up voltage conversion ratio and conventional full-bridge inverter. The system can be divided into two operating modes which are normal mode and backup mode. During normal condition, the grid is available and supplies the load as well as charges the battery through the bidirectional system. While on this condition, the system is operating in normal mode. When grid start failing, the bidirectional system switched to backup mode and converts battery power to supplies the load. This system offers several advantages such as reduced in power electronic interface, and low voltage regulation during grid failure. The steady state of the system is simulated and tested in MATLAB-Simulink.