A Power Supply System with ZVS and Current-Doubler Features for Hybrid Renewable Energy Conversion
Abstract
:1. Introduction
2. Structural Description of the Proposed Power Supply System
2.1. Selection of ZVS Circuit
2.2. Operational Principle
- (1)
- To analyze the ZVS feature of active switches (M1 and M2), the body diodes (D1 and D2) of the active switches (M1 and M2) and the leakage inductance (Lk) of the transformer (Tr) will be considered at the steady-state operation of the circuit.
- (2)
- Output capacitor Co and clamp capacitor Cc are large enough so that the voltages across them are constant over a switching period.
- (3)
- All of the switching devices and components are ideal.
Stage 1 (Figure 7a, t0 < t < t1)
Stage 2 (Figure 7b, t1 < t < t2)
Stage 3 (Figure 7c, t2 < t < t3)
Stage 4 (Figure 7d, t3 < t < t4)
Stage 5 (Figure 7e, t4 < t < t5)
Stage 6 (Figure 7f, t5 < t < t6)
Stage 7 (Figure 7g, t6 < t < t7)
Stage 8 (Figure 7h, t7 < t < t8)
Stage 9 (Figure 7i, t8 < t < t9)
3. MPPT Algorithm of PV Arrays and Wind Turbine
4. Control Scheme of the Proposed Power Supply
5. Design Consideration
- (1)
- PV arrays: peak power PPV = 300 W, voltage VPV = 200–220 VDC,
- (2)
- Wind turbine: peak power Pwind = 400 W, voltage Vwind = 200–230 VDC,
- (3)
- Output voltage of converter: Vo = 24 VDC,
- (4)
- Output power of converter: Po,max = 240 W, and
- (5)
- Switching frequency: fs = 50 kHz (M1–M4).
5.1. Design Considerations of Key Components
5.1.1. Design of isolation transformer (Tr)
5.1.2. Selection of Output Inductors (L1 and L2)
5.1.3. Selection of Synchronous Switches (M3 and M4)
5.1.4. Selection of Main and Auxiliary Switch (M1 and M2)
5.1.5. Selection of Output Filter Capacitor (Co)
5.1.6. Selection of Resonant Inductor and Clamping Capacitor (Lr and Cc)
5.2. Experimental Results
6. Conclusions
Conflicts of Interest
References
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Tsai, C.-T.; Shen, C.-L.; Su, J.-C. A Power Supply System with ZVS and Current-Doubler Features for Hybrid Renewable Energy Conversion. Energies 2013, 6, 4859-4878. https://doi.org/10.3390/en6094859
Tsai C-T, Shen C-L, Su J-C. A Power Supply System with ZVS and Current-Doubler Features for Hybrid Renewable Energy Conversion. Energies. 2013; 6(9):4859-4878. https://doi.org/10.3390/en6094859
Chicago/Turabian StyleTsai, Cheng-Tao, Chih-Lung Shen, and Jye-Chau Su. 2013. "A Power Supply System with ZVS and Current-Doubler Features for Hybrid Renewable Energy Conversion" Energies 6, no. 9: 4859-4878. https://doi.org/10.3390/en6094859