Journal
EPE JOURNAL
Volume 19, Issue 2, Pages 36-44Publisher
TAYLOR & FRANCIS LTD
DOI: 10.1080/09398368.2009.11463715
Keywords
Power converter; Uninterruptible power supply; Pulse width modulation; Voltage source inverter; Voltage source rectifier
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A novel three-phase PWM rectifier-inverter topology (Fig. 2) for UPS applications is proposed in this paper. The topology uses only nine IGBT devices for AC/AC conversion through a quasi d.c. link circuit. This converter topology features sinusoidal inputs and outputs, unity input power factor and more importantly, low manufacturing cost. The operating principle of the converter is elaborated and a dedicated space vector modulation scheme is presented. The performance of the proposed converter is verified by experiments on a 5 kVA prototyping UPS system.
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