A New Reliable Three-Phase Buck-Boost AC-AC Converter

This paper proposes a new bidirectional direct pulse width modulation (PWM) three-phase buck-boost ac-ac converter. It requires six switches and three inductors and can provide wide range buck-boost voltage operation. It has high reliability due to no short-circuit and open-circuit risks in the conv...

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Bibliographic Details
Published in:IEEE transactions on industrial electronics (1982) 2018-02, Vol.65 (2), p.1000-1010
Main Authors: Khan, Ashraf Ali, Honnyong Cha, Ahmed, Hafiz Furqan
Format: Article
Language:English
Subjects:
AC-AC converters
AC–AC converter
buck-boost capability
Capacitors
Circuit design
Circuit reliability
Commutation
Converters
Diodes
Electronics
Field effect transistors
inductor
Inductors
metal–oxide–semiconductor field-effect transistor (MOSFET)
MOSFET
MOSFETs
Pulse duration modulation
Pulse width modulation
reliability
Semiconductor devices
Short circuits
Snubbers
Strategy
Switches
three-phase
Voltage converters (AC to AC)
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Summary:This paper proposes a new bidirectional direct pulse width modulation (PWM) three-phase buck-boost ac-ac converter. It requires six switches and three inductors and can provide wide range buck-boost voltage operation. It has high reliability due to no short-circuit and open-circuit risks in the converter. Therefore, it solves the commutation problem without using lossy snubber circuits, soft commutation strategies, and coupled inductors. It can be designed with metal-oxide-semiconductor field-effect transistors (MOSFETs) without their body diodes conducting, which eliminate reverse recovery issues and losses of body diodes. In addition, to reduce the ripples in input and output voltages and currents, the proposed converter can be operated with a PWM strategy-II. The PWM strategy-II is a type of interleaved PWM strategy with dead- and overlap-times operating modes. To validate the effectiveness of the proposed converter extensive analysis followed by detailed experimental results are provided.
ISSN:0278-0046
1557-9948
DOI:10.1109/TIE.2017.2733439