Comparative Analysis and Optimization of Power Loss Based on the Isolated Series/Multi Resonant Three-Port Bidirectional DC-DC Converter
Abstract
:1. Introduction
2. Operating Principle of the MR-TBC and SR-TBC
3. Steady State Analysis
4. Power Loss Modeling
- (1)
- The effect of transformer leakage inductance and some other parasitic parameters on loss is not considered.
- (2)
- The devices of the same type are regard as the ideal, whose parameters only follow the datasheets. Individual differences are ignored.
- (3)
- The influence of temperature on some device parameters is ignored. If the parameter is temperature dependent, the calibration is only based on the datasheet. The analysis is carried out considering the operating temperature of the converter is 75 °C.
4.1. MOSFET Power Loss Model
4.2. Transformer Power Loss Model
4.3. Resonant Inductor Power Loss Model
4.4. Capacitors Power Loss Model
5. Loss Distribution Analysis and Optimization
5.1. Loss Distribution Comparison between Si and SiC MOSFET
5.2. Loss Comparison between SR-TBC and MR-TBC
6. Experimental Results
7. Conclusions
Acknowledgments
Author Contributions
Conflicts of Interest
References
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Element | MR-TBC | SR-TBC | |
---|---|---|---|
Switch | SiC MOSFET Type: C3M0065090D | ||
Transformer | Core EE85 *2 in parallel | ||
turns ratio nBUS:nBAT:nSC = 14:5.25:7 | |||
Resonant inductor | Core | PQ4040 | PQ5050 |
Turn numbers | 11.5 | 18 | |
Inductance | BAT: LR 34u LP 31.88u | BAT: LR 127.58u | |
SC: LR 33.76u LP 31.85u | SC: LR 127.63u | ||
Resonant capacitance | Cr: FKP 37n | Cr: FKP 22n | |
Cp: FKP 22n | |||
Filter capacitor | BUS: MKP 30u *3 and 20u *2 in parallel | ||
SC: MKP 30u *3 in parallel | |||
BAT: PAR 20u *3 in parallel |
Prototype | Experiment Efficiency | Calculation Efficiency | Deviation |
---|---|---|---|
MR-TBC 105 kHz | 95.45% | 96.36% | 0.91% |
SR-TBC 105 kHz | 94.3% | 95.66% | 1.36% |
Prototype | Experiment Efficiency | Calculation Efficiency | Deviation |
---|---|---|---|
MR-TBC 110 kHz | 96.08% | 96.75% | 0.67% |
SR-TBC 110 kHz | 95.17% | 95.66% | 0.49% |
SR-TBC 125 kHz | 93% | 94.7% | 1.7% |
Prototype | Experiment Efficiency | Calculation Efficiency | Deviation |
---|---|---|---|
MR-TBC 130 kHz | 94.45% | 95.14% | 0.69% |
SR-TBC 130 kHz | 91.67% | 92.82% | 1.15% |
SR-TBC 150 kHz | 93% | 93.52% | 0.52% |
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Chen, B.; Wang, P.; Wang, Y.; Li, W.; Han, F.; Zhang, S. Comparative Analysis and Optimization of Power Loss Based on the Isolated Series/Multi Resonant Three-Port Bidirectional DC-DC Converter. Energies 2017, 10, 1565. https://doi.org/10.3390/en10101565
Chen B, Wang P, Wang Y, Li W, Han F, Zhang S. Comparative Analysis and Optimization of Power Loss Based on the Isolated Series/Multi Resonant Three-Port Bidirectional DC-DC Converter. Energies. 2017; 10(10):1565. https://doi.org/10.3390/en10101565
Chicago/Turabian StyleChen, Bo, Ping Wang, Yifeng Wang, Wei Li, Fuqiang Han, and Shuhuai Zhang. 2017. "Comparative Analysis and Optimization of Power Loss Based on the Isolated Series/Multi Resonant Three-Port Bidirectional DC-DC Converter" Energies 10, no. 10: 1565. https://doi.org/10.3390/en10101565