Parallel DC/DC converters system with a novel primary droop current sharing control

J.B. Wang

Parallel DC/DC converters system with a novel primary droop current sharing control

Access Full Text

Parallel DC/DC converters system with a novel primary droop current sharing control

Author(s): J.B. Wang
DOI: 10.1049/iet-pel.2012.0216

For access to this article, please select a purchase option:

Buy article PDF

Buy Knowledge Pack

IET members benefit from discounts to all IET publications and free access to E&T Magazine. If you are an IET member, log in to your account and the discounts will automatically be applied.

Learn more about IET membership

Recommend Title Publication to library

IET Power Electronics — Recommend this title to your library

Thank you

Your recommendation has been sent to your librarian.

Author(s): J.B. Wang ¹
- Affiliations: 1: Department of Electrical Engineering, Chien Hsin University of Science and Technology, Jung-Li, Taiwan
Source: Volume 5, Issue 8, September 2012, p. 1569 – 1580
DOI: 10.1049/iet-pel.2012.0216 , Print ISSN 1755-4535, Online ISSN 1755-4543

Published

In this study, a primary droop current sharing controller with output current commitment capability for a stand-alone renewable energy source was proposed. The specially designed DC/DC converter for renewable energy source consists of feedforward, voltage and droop current sharing control loops; furthermore, the droop voltage compensated scheme is also designed to improve current sharing performance under variation of the input voltage. When the renewable energy is abundant, the DC/DC converter with respect to this energy source can provide more load current and also can save energy bill from utility. The output voltage magnitude of the maximum power point tracking (MPPT)-controlled converter is used to signal the status of the renewable energy for the output current commitment judgment, and then shifts the output voltage droop characteristics to adjust output current through an 8 bits microprocessor PIC16F876. Finally, the design and analysis of the proposed scheme are introduced in this paper and some simulation and experimental results are also provided.

References

1. 1)
  - H. Mao , L. Yao , C. Wang , I. Batarseh . Analysis of inductor current sharing in nonisolated and isolated multiphase dc–dc converters. IEEE Trans. Ind. Electron. , 6 , 3379 - 3388
2. 2)
  - S. Kai , Z. Li , X. Yan , J.M. Guerrero . A distributed control strategy based on DC bus signaling for modular photovoltaic generation systems with battery energy storage. IEEE Trans. Power Electron. , 10 , 3032 - 3045
3. 3)
  - Z. Xunwei , X. Peng , F.C. Lee . A novel current-sharing control technique for low-voltage high-current voltage regulator module applications. IEEE Trans. Power Electron. , 1153 - 1162
4. 4)
  - Q. Mei , M. Shan , L. Liu , J.M. Guerrero . A novel improved variable step-size incremental-resistance MPPT method for PV systems. IEEE Trans. Ind. Electron. , 6 , 2427 - 2434
5. 5)
  - Batarseh, I., Siri, K., Lee, H.: `Investigation of the output droop characteristics of parallel-connnected DC-DC converters', PESC '94 Record of the 25th Annual IEEE Power Electronics Specialists Conf., 1994, 2, p. 1342–1351.
6. 6)
  - N. Mohan , T.M. Undeland , W.P. Robbins . (2002) Power electronics: converters, applications, and design.
7. 7)
  - J.B. Wang . Study of cable resistance and remote sensing scheme in parallel DC/DC converters system via primary droop current sharing control. IET Power Electron. , 6 , 1 - 14
8. 8)
  - V.J. Thottuvelil , G.C. Verghese . Analysis and control design of paralleled DC/DC converters with current sharing. IEEE Trans. Power Electron. , 4 , 635 - 644
9. 9)
  - E. Prieto-Araujo , F.D. Bianchi , A. Junyent-Ferre , O. Gomis-Bellmunt . Methodology for droop control dynamic analysis of multiterminal VSC-HVDC grids for offshore wind farms. IEEE Trans. Power Deliv. , 4 , 2476 - 2485
10. 10)
  - Luo, S., Ye, Z., Lin, R.-L., Lee, F.C.: `A classification and evaluation of paralleling methods for power supply modules', PESC 99 Record of 30th Annual IEEE Power Electronics Specialists Conf., 1999, 2, p. 901–908.
11. 11)
  - J.B. Wang . Design a parallel buck derived converter system using the primary current droop sharing control. IET Proc. Power Electron. , 5 , 491 - 502
12. 12)
  - J.-W. Kim , H.-S. Choi , B.H. Cho . A novel droop method for converter parallel operation. IEEE Trans. Power Electron. , 1 , 25 - 22
13. 13)
  - K.J. Jaehong , M. Guerrero , P. Rodriguez , R. Teodorescu , N. Kwanghee . Mode adaptive droop control with virtual output impedances for an inverter-based flexible AC microgrid. IEEE Trans. Power Electron. , 3 , 689 - 701
14. 14)
  - Wu, T.F., Siri, K., Banda, J.: `The central-limit control and impact of cable resistance in current distribution for parallel-connected DC-DC converters', IEEE 25th Annual Power Electronics Specialists Conf., PESC '94 Record, 1994, 1, p. 694–702.
15. 15)
  - R. Erickson , D. Maksimovic . (2000) Fundamentals of power electronics.
16. 16)
  - R. Majumder , B. Chaudhuri , A. Ghosh , R. Majumder , G. Ledwich , F. Zare . Improvement of stability and load sharing in an autonomous microgrid using supplementary droop control loop. IEEE Trans. Power Syst. , 2 , 796 - 808
17. 17)
  - A.J. Wood , B.F. Wollenberg . (1996) Power generation, operation and control.
18. 18)
  - Y. Huang , C.K. Tse . Circuit theoretic classification of parallel connected DC–DC converters. IEEE Trans. Circuits Syst. , 5 , 1099 - 1108
19. 19)
  - E. Koutroulis , K. Kalaitzakis . Design of a maximum power tracking system for wind-energy-conversion applications. IEEE Trans. Ind. Electron. , 2 , 486 - 494
20. 20)
  - J. Schonberger , R. Duke , S.D. Round . DC-bus signaling: a distributed control strategy for a hybrid renewable nanogrid. IEEE Trans. Ind. Electron. , 5 , 1453 - 1460

Login

Not registered yet?

Share

Tools

Login to add to favourites

Key

Parallel DC/DC converters system with a novel primary droop current sharing control

Parallel DC/DC converters system with a novel primary droop current sharing control

Buy article PDF

Buy Knowledge Pack

Thank you

References

Related content