New Switching Strategy for Single-Mode Operation of a Single-Stage Buck–Boost Inverter

Generally, single-stage buck-boost inverters consist of distinct circuits operating individually in buck/boost or positive/negative modes, the latter definitely leading to crossover distortion in the output current. This paper proposes a switching strategy that changes the bimodal operation of a sin...

Full description

Saved in:
Bibliographic Details
Published in:IEEE transactions on power electronics 2018-07, Vol.33 (7), p.5927-5936
Main Authors: Kumar, Ashok, Sensarma, Parthasarathi
Format: Article
Language:English
Subjects:
Buck–boost
Capacitors
Circuit design
Circuits
Control systems design
differential boost
Distortion
Electric potential
Equivalent circuits
grid connected
Inductors
Inverters
Polarity
single mode
Single mode operation
single phase
single stage
stand alone
Strategy
Switches
Switching
switching strategy
Topology
Two dimensional displays
Voltage gain
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Generally, single-stage buck-boost inverters consist of distinct circuits operating individually in buck/boost or positive/negative modes, the latter definitely leading to crossover distortion in the output current. This paper proposes a switching strategy that changes the bimodal operation of a single-stage buck-boost topology to a single-mode inverter. This is due to the consequent voltage gain that ensures that the output voltage polarity, apart from its magnitude, is an exclusive function of the duty ratio. Operational principle and salient hardware design are explained with the help of equivalent circuits. Details about the dynamic model are presented, based on which controller design is carried out for both stand-alone and grid-connected operation. Experimental results obtained from a 300-W, 110-V laboratory prototype are presented to validate the performance of the proposed switching strategy.
ISSN:0885-8993
1941-0107
DOI:10.1109/TPEL.2017.2742403