ABSTRACT:
A novel
multiple–input converter with bidirectional power flow capability is proposed
in this paper. By using bidirectional power flow approch, not only the buck
mode but also the boost mode of operation can be possible. Moreover, by
establishing single power converter for different sources we can reduce the
components and so the size of overall system and cost can be reduced. In this
topology independent of voltage level interconnection of voltage sources can be
possible. One of the source used is solar panel which holds the predominant
place for satsfying the futur enegry demand. In fuel cell vehicles different sources
which having unequal voltage rating is needed with bidirectional power flow.
Thus the proposed topology finds application in fuel cell vehicles
(FCVs)/hybrid electric vehicles (HEVs).The operation principle, theoretical
analysis, and design of the proposed converter are presented in this paper.
Simulation results are used to verify both the exactness and feasibility of the
proposed converter.
KEYWORDS:
1.
DC –DC power converter
2. Multiple input converter
SOFTWARE:
MATLAB/SIMULINK
EXPECTED SIMULATION RESULTS:
Fig.
2. Simulation result of mode E inductor currents, voltages and dc link current
Fig.
3. Simulation result of mode F inductor currents, voltages and
dc
link current
Fig.
4. Simulation result of mode G inductor currents, voltages and
dc
link current
CONCLUSION:
This paper has proposed a multiple-input
bidirectional dc–dc converter to interface more than two sources of
power/energy operating at different voltage levels. The converter can be operated
either in buck mode or boost mode in either directions of power flow. It is
possible to control the power flow between each pair of sources independently
when more than two sources are active. This paper gives detailed analysis and
operation of the converter for various modes. In each mode, the relationship
between the sources is derived which assists in the implementation of the
controller. Simulations are done with three sources. Results obtained from
these systems have been presented and match very well with the analytically expected
waveforms. This converter not only finds application in FCVs but also can be
utilized in distributed energy resources, smart grid and microgrid, battery
management systems, etc., where more than two dc sources need to be interfaced
with bidirectional power flow capability
REFERENCES:
[1] S. Aso, M. Kizaki, and Y. Nonobe, “Development
of hybrid fuel cell vehicles in Toyota,” in Proc. IEEE PCC, 2007, pp. 1606–1611
[2] K. Rajashekhara, “Power conversion
and control strategies for fuel cell vehicles,” in Proc. IEEE IECON, 2003,
pp. 2865–2870.
[3] C. Chan, “The state of the art of
electric and hybrid vehicles,” Proc. IEEE, vol. 90, no. 2, pp. 247-275,
Feb. 2002
[4] B. Ozpineci, L. M. Tolbert, D.
Zhong, “Multiple input converters for fuel cells,” in proc. Industry
Applications Conference, 2004, vol. 2, pp. 791-797, 3-7 Oct. 2004
[5] Y.M. Chen, Y.C. Liu, and S.H. Lin, “Double-input
PWM DC-DC converter for high/low voltage sources,” 25th International Telecommunications
Energy Conference, 19-23 Oct. 2003, pp. 27–32.
