A Highly Reliable and High-Efficiency Quasi Single-Stage Buck-Boost Inverter

To regulate an output ac voltage in inverter systems having wide input dc voltage variation, a buck-boost power conditioning system is preferred. This paper proposes a novel high-efficiency quasi single-stage single-phase buck-boost inverter. The proposed inverter can solve current shoot-through pro...

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Veröffentlicht in:IEEE transactions on power electronics 2017-06, Vol.32 (6), p.4185-4198
Hauptverfasser: Khan, Ashraf Ali, Honnyong Cha, Ahmed, Hafiz Furqan, Juyong Kim, Jintae Cho
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container_issue 6
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container_title IEEE transactions on power electronics
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creator Khan, Ashraf Ali
Honnyong Cha
Ahmed, Hafiz Furqan
Juyong Kim
Jintae Cho
description To regulate an output ac voltage in inverter systems having wide input dc voltage variation, a buck-boost power conditioning system is preferred. This paper proposes a novel high-efficiency quasi single-stage single-phase buck-boost inverter. The proposed inverter can solve current shoot-through problem and eliminate PWM dead time, which leads to greatly enhanced system reliability. It allows bidirectional power flow and can use MOSFET as switching device without body diode conducting. The reverse recovery issues and related loss of the MOSFET body diode can be eliminated. The use of MOSFET contributes to the reduction of switching and conduction losses. Also, the proposed inverter can be operated with simple pulse width modulation (PWM) control and can be designed at higher switching frequency to reduce the volume of passive components. The detailed experimental results are provided to show the advantages of the proposed inverter. Efficiency measurement shows that using simple PWM control the proposed inverter can obtain peak efficiency of 97.8% for 1.1-kW output power at 30-kHz switching frequency.
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subjects AC-AC converters
Buck—boost
Conduction losses
DC-DC power converters
dual-buck
Efficiency
Electric potential
Electronics
inverter
Inverters
MOSFET
MOSFETs
Passive components
Power conditioning
Power flow
Pulse duration modulation
Pulse width modulation
Reliability
single-stage
Switches
Switching
switching cell (SC)
System reliability
Z-source
title A Highly Reliable and High-Efficiency Quasi Single-Stage Buck-Boost Inverter
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