A Buck-Boost DC/DC Converter with High Efficiency Suitable for Renewable Energies
-
M Maalandish
,
S. H. Hosseini
Abstract
In this paper, a non-isolated buck-boost dc/dc converter with only one switch is presented. The proposed converter consists of one switch in the input side (S), four inductors, four diodes, six capacitors and a capacitor in the output side (Co). In fact, the combination of the inductor, diode and capacitor leads voltage level is increased. Actually, the voltage stress on power switch is decreased for higher power limits at various duty-cycles by combining these components. Therefore, conduction losses can be reduced by using a switch with lower resistance RDS(ON). Another advantage of the proposed converter is that the normalized voltage stress on diodes is low. As a result, the efficiency of proposed converter is high. In order to investigate the competences of the proposed converter, comparison results with other structures are provided. The principle of operation, theoretical analysis and the experimental prototype of proposed converter in about 120 W with operating at 25 kHz are provided.
Appendix
Nomenclature
- D
Duty-Cycle
- M
Voltage conversion ratio
- MD
Normalized voltage stress across diode
- MS
Normalized voltage stress across switch
- TS
Period of switching
- CCM
Continuous conduction mode
- DCM
Discontinuous conduction mode
- fS
Switching frequency
Current ripple across the inductors
Sum of the peak current of all inductors
- Pr-DS(ON)
Losses of on-state resistance
- Pswitching
Losses of switching
- PRF
Losses of forward resistance
- PVF
Losses of forward voltage
- PL
Losses of inductors
- PRc
Losses of capacitors
- Ltot
Equivalent inductor
Boundary normalized inductor time constant
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© 2018 Walter de Gruyter GmbH, Berlin/Boston
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- Research Article
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- New Numerical Integration Methods for Simulation of Electromagnetic Transients
- Protection Systems and Earthing Schemes for Microgrids: Main Aspects and Fault Analysis
- Maxmize the House Roof PV Solar Output by Using Maximum Power Point Box (MPPB)
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- Economical Feasibility of Photovoltaic Array Power Increase by Alternative Structures Inclusion
- Multi-Stage Optimal Placement of Branch PMU in Active Distribution Network
- Study on the Impacts of Uncertain Meteorological Parameters on Line Transmission Capacity
- A Buck-Boost DC/DC Converter with High Efficiency Suitable for Renewable Energies
- Smart Battery Charging Station for ElectricVehicle Using Half Bridge Power Converter
- Study on a Motor Bearing Fault Diagnosis Method Using Improved EWT Based on Scale Space Threshold Method
