Simulations to Eliminate Backflow Power in an Isolated Three-Port Bidirectional DC–DC Converter
Abstract
:1. Introduction
2. Method
2.1. Circuit Description
2.2. Backflow Power in SPS Operation
2.3. Backflow Power in DPS Operation
3. Results and Discursion
3.1. Backflow Power Eliminated with DPS
3.2. Characteristics of the Backflow Power and the Power Processed by the Converter
3.2.1. Characterization of the Backflow Power
3.2.2. Characterization of the Processed Power at the Various Ports
4. Conclusions
Author Contributions
Funding
Data Availability Statement
Conflicts of Interest
Abbreviations
DPS | Dual phase shift |
SPS | Single phase shift |
PSIM | Power SIM |
TAB | Triple active bridge |
RMS | Root mean square |
DAB | Dual active bridge |
SST | Solid state transformer |
Symbols | |
Internal phase-shift ratio | |
Phase-shift ratio between ports 1 and 2 | |
Phase-shift ratio between ports 1 and 3 | |
Internal phase-shift angle | |
Phase-shift angle between ports 1 and 2 | |
Phase-shift angle between ports 1 and 3 | |
DC-linked voltages at the different ports | |
Voltages at the transformer terminals | |
Number of turns of the different windings | |
Transformer currents | |
Leakage inductance of the windings | |
Converter’s input current | |
Voltage conversion ratios | |
Backflow power with SPS control | |
Backflow power with DPS control | |
A | Area of the backflow region |
T | Switching period |
Average current | |
Backflow power between ports 1 and 2 | |
Backflow power between ports 1 and 3 | |
Power processed at the ports with SPS | |
Power processed at the ports with DPS | |
Maximum possible power | |
Ratio of backflow power with SPS on | |
Ratio of backflow power with DPS on | |
Ratio of power at the ports with SPS on | |
Ratio of power at the ports with DPS on |
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Specification | Symbol | Value |
---|---|---|
DC linked voltages (v) | ||
Switching frequency (kHz) | ||
Turn ratio | ||
Leakage inductance (µH) | ||
Power (kw) | 10 | |
Phase shift ratio | 0.215 | |
Phase shift angle | 38.7° | |
Internal phase shift angle | 20° |
Time | Value |
---|---|
0 | |
T/2 | |
T[1 + ]/2 | |
T |
Time | Value |
---|---|
0 | |
T/2 | |
/2 | |
T |
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Koneh, N.N.; Ko, J.-S.; Kim, D.-K. Simulations to Eliminate Backflow Power in an Isolated Three-Port Bidirectional DC–DC Converter. Energies 2023, 16, 450. https://doi.org/10.3390/en16010450
Koneh NN, Ko J-S, Kim D-K. Simulations to Eliminate Backflow Power in an Isolated Three-Port Bidirectional DC–DC Converter. Energies. 2023; 16(1):450. https://doi.org/10.3390/en16010450
Chicago/Turabian StyleKoneh, Norbert Njuanyi, Jae-Sub Ko, and Dae-Kyong Kim. 2023. "Simulations to Eliminate Backflow Power in an Isolated Three-Port Bidirectional DC–DC Converter" Energies 16, no. 1: 450. https://doi.org/10.3390/en16010450