A Novel High Step-Up DC-DC Converter with Coupled Inductor and Switched Clamp Capacitor Techniques for Photovoltaic Systems
Abstract
:1. Introduction
2. Operation Principle of the Proposed Converter
- Capacitors C1–C3 and Co1–Co2 are sufficiently large. Therefore, Vc1–Vc3 and Vco1–Vco2 are considered constant during an operation.
- Power devices are ideal components, and the parasitic capacitors of power devices are not neglected.
- The magnetizing inductance is Lm and leakage inductance is Lk; the coupling coefficient of the coupled inductor is k and is equal to Lm/(Lm+Lk).
- The turn ratio n is equal to Ns/Np.
- The proposed converter operation can be divided into the continuous conduction mode (CCM) and discontinuous conduction mode (DCM). The detail analysis is as follows:
2.1. CCM Operation
2.2. DCM Operation
3. Steady-State Analysis of the Proposed Converter
3.1. CCM Operation
3.2. DCM Operation
3.3. Boundary Operating Condition between the CCM and the DCM
4. Design and Experiment of the Proposed Converter
- Input DC voltage : 24 V.
- Output DC voltage .
- Maximum output power: 150 W.
- Switch frequency: 50 kHz.
- Switch: IXTH130N10T.
- Diodes: D1–D3, Do: DSEI 30-10A; Din and D4: 25JPE40.
- Capacitors: C1 and Cco2: 100 /100 V, C2: 100 /250 V, C3: 100 /100 V, and Co1: 220 /400 V aluminium capacitors.
- Transformer: ETD-49 core PC-32, Np:Ns = 1:3, Lm = 32 μH and Lk = 0.22 μH; .
5. Conclusions
Acknowledgments
Author Contributions
Conflicts of Interest
References
- Anders, L.; Peter, U.C.; Ben, M.; Glenn, A.M.; David, P.; Valentina, R.; Alexander, R. The multimillennial sea-level commitment of global warming. Proc. IEEE Natl. Acad. Sci. USA 2016, 110, 13745–13750. [Google Scholar]
- Wei, C.L.; Shih, M.H. Design of a switched-capacitor DC-DC converter with a wide input voltage range. IEEE Trans. Circuits Syst. I 2013, 60, 1648–1656. [Google Scholar] [CrossRef]
- Chang, C.H.; Chang, E.C.; Cheng, H.L. A high-efficiency solar array simulator implemented by an LLC resonant DC-DC converter. IEEE Trans. Power Electron. 2013, 28, 3039–3046. [Google Scholar] [CrossRef]
- Shen, J.M.; Jou, H.L.; Wu, J.C. Novel transformerless grid-connected power converter with negative grounding for photovoltaic generation system. IEEE Trans. Power Electron. 2012, 27, 1819–1829. [Google Scholar] [CrossRef]
- Zhang, L.; Sun, K.; Feng, L.L.; Wu, H.F.; ** zero-voltage turn-on switching/zero-current turn-off switching converter. IET Power Electron. 2010, 3, 429–437. [Google Scholar] [CrossRef]
- Zhao, Q.; Tao, F.; Hu, Y.; Lee, F.C. Active-clamp DC/DC converters using magnetic switches. In Proceedings of the Sixteenth Annual IEEE Applied Power Electronics Conference and Exposition (APEC 2001), Anaheim, CA, USA, 4–8 March 2002; pp. 946–952.
- Tseng, K.C.; Liang, T.J. Analysis of integrated boost-flyback step-up converter. IEEE Proc. Inst. Elect. Eng. Electric. Power Appl. 2005, 151, 217–225. [Google Scholar]
- Wai, R.J.; Duan, R.Y.; Jheng, K.H. High-efficiency bidirectional DC-DC converter with high-voltage gain. IET Power Electron. 2012, 5, 173–184. [Google Scholar] [CrossRef]
- Kuo, P.H.; Liang, T.J.; Tseng, K.C.; Chen, J.F.; Chen, S.M. An isolated high step-up forward/flyback active-clamp converter with output voltage lift. In Proceedings of the 2010 IEEE Energy Conversion Congress and Exposition (ECCE), Atlanta, GA, USA, 12–16 September 2010; pp. 542–548.
- Wai, R.J.; Liu, L.W.; Duan, R.Y. High-efficiency voltage-clamped DC-DC converter with reduced reverse-recovery current and switch-Voltage stress. IEEE Trans. Ind. Electron. 2006, 53, 272–280. [Google Scholar]
- Wu, T.F.; Lai, Y.S.; Hung, J.C.; Chen, Y.M. Boost converter with coupled inductors and buck-boost type of active clamp. IEEE Trans. Ind. Electron. 2008, 55, 154–162. [Google Scholar] [CrossRef]
- Wai, R.J.; Lin, C.Y.; Duan, R.Y.; Chang, Y.R. High-efficiency DC-DC converter with high voltage gain and reduced switch stress. IEEE Trans. Ind. Electron. 2007, 54, 354–364. [Google Scholar] [CrossRef]
- Muhammad, M.; Armstrong, M.; Elgendy, M.A. A nonisolated interleaved boost converter for high-voltage gain applications. IEEE J. Emerg. Sel. Top. Power Electron. 2016, 4, 352–362. [Google Scholar] [CrossRef]
- Muhammad, M.; Armstrong, M.; Elgendy, M. Non-isolated DC-DC converter for high-step-up ratio applications. In Proceedings of the 2015 17th European Conference on Power Electronics and Applications (EPE'15 ECCE-Europe), Geneva, Switzerland, 8–10 September 2015; pp. 1–10.
- Muhammad, M.; Armstrong, M.; Elgendy, M.A. Non-isolated, high gain, boost converter for power electronic applications. In Proceedings of the 8th IET International Conference on Power Electronics, Machines and Drives (PEMD 2016), Glasgow, UK, 19–21 April 2016.
Converters | No. of Components | Efficiency | Vin/Vout | Voltage Gain ( Vo/Vin) |
---|---|---|---|---|
proposed converter | 6 diodes, | 96.20% | Vin = 24 V, | |
5 capacitors | Vo = 400 V | |||
[6] | 3 diodes, | NA | Vin = 48 V, | |
3 capacitors | Vo = 380 V | |||
[8] | 4 diodes, | 95.88% | Vin = 24 V, | |
4 capacitors | Vo = 400 V | |||
[9] | 4 diodes, | 96.70% | Vin = 24 V, | |
4 capacitors | Vo = 400 V | |||
[19] | 5 diodes, | 95.70% | Vin = 24 V, | |
4 capacitors | Vo = 200 V | |||
[22] | 5 diodes, | 96.20% | Vin = 24 V, | |
3 capacitors | Vo = 200 V | |||
[29] | 5 diodes, | 96.50% | Vin = 27–37.5 V, | |
3 capacitors | Vo = 200 V | |||
[31] | 3 diodes, | 95.20% | Vin = 27–36.5 V, | |
3 capacitors | Vo = 200 V |
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Wong, Y.-S.; Chen, J.-F.; Liu, K.-B.; Hsieh, Y.-P. A Novel High Step-Up DC-DC Converter with Coupled Inductor and Switched Clamp Capacitor Techniques for Photovoltaic Systems. Energies 2017, 10, 378. https://doi.org/10.3390/en10030378
Wong Y-S, Chen J-F, Liu K-B, Hsieh Y-P. A Novel High Step-Up DC-DC Converter with Coupled Inductor and Switched Clamp Capacitor Techniques for Photovoltaic Systems. Energies. 2017; 10(3):378. https://doi.org/10.3390/en10030378
Chicago/Turabian StyleWong, Yong-Seng, Jiann-Fuh Chen, Kuo-Bin Liu, and Yi-** Hsieh. 2017. "A Novel High Step-Up DC-DC Converter with Coupled Inductor and Switched Clamp Capacitor Techniques for Photovoltaic Systems" Energies 10, no. 3: 378. https://doi.org/10.3390/en10030378