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Three-Level PWM Floating H-Bridge Sinewave Power Inverter for High-Voltage and High-Efficiency Applications.
- Source :
- IEEE Transactions on Power Electronics; Jun2016, Vol. 31 Issue 6, p4065-4074, 10p
- Publication Year :
- 2016
-
Abstract
- This paper presents a topology of a single-phase floating full-bridge three-level pulse width modulation (PWM) power inverter suitable for high-voltage/high-power dc–ac conversion. High power efficiency is obtained thanks to the slow (50/60 Hz) biasing of the H-bridge power supply terminals, allowed by a particular arrangement and control of two complementary active neutral point clamped voltage-source converters. As result, the main PWM switching voltage as well as the maximum drain–source voltage $V_{{\rm DSS}} of related transistors are reduced to one-half of the input VDD voltage. This is allowed by the internally generated and accurately balanced middle-node voltage VDD/2. Consequently, advantageous $r_{{\rm DS}({\rm on})}$ of the low-voltage transistors, along with reduced switching PWM voltage result in considerable decreasing of power losses in whole output power range. This paper introduces the main concept of the floating H-bridge topology, and presents in detail the circuit realization. The performances are demonstrated on $450 V_{{\rm DC}}/230 V_{{\rm AC}}$ 2 kW power inverter exhibiting 98.6% peak efficiency and realized in very small $100\times 60\times 30$ mm3 volume. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 08858993
- Volume :
- 31
- Issue :
- 6
- Database :
- Complementary Index
- Journal :
- IEEE Transactions on Power Electronics
- Publication Type :
- Academic Journal
- Accession number :
- 112538377
- Full Text :
- https://doi.org/10.1109/TPEL.2015.2477246