A Generalized Relationship for Calculation of Critical Inductance in an n-Input Buck DC-DC Converter
Subject Areas : electrical and computer engineering
K.
Varesi
1
S. H.
Hosseini
2
M.
Sabahi
3
E.
Babaei
4
Abstract :
critical inductance is one of the factors that decides continuous, boundary or discontinuous conduction mode of dc-dc converters. In applications like mining, the Continuous Conduction Mode (CCM) and consequently safety of converter can be guaranteed by proper selection of inductance. So, calculation of critical inductance and proper sizing of inductor is an important issue in designing of dc-dc converters. In this paper, a non-isolated n-input buck dc-dc converter is introduced. Then, the operational modes and energy transfer process is investigated and discussed in detail. The critical inductance is calculated for 3 and 4-input versions. Using the inductive reasoning, a generalized relationship is proposed for calculation of critical inductance of converter with any number of inputs (n-input version). The proposed generalized relationship not only reduces the amount and time of calculation in design stage, but also presents a better view of performance of converter. The 3 and 5-input version of converter has been modeled and simulated in PSCAD/EMTDC software. Also, the 3-input version of converter has been practically implemented. The obtained simulation and experimental results confirm the validity of proposed generalized relationship for critical inductance calculation of n-input buck dc-dc converter.
[1] N. Zhang, D. Sutanto, and K. M. Muttaqi, "A review of topologies of three-port DC-DC converters for the integration of renewable energy and energy storage system," Renewable and Sustainable Energy Reviews, vol. 56, pp. 388-401, Apr. 2016.
[2] L. Shulin and M. Yibo, "Optimization design of the inductance of boost converters," in Proc. Int. Conf. on Electrical and Control Engineering, pp. 3949-3952, Wuhan, China, 25-27 Jun. 2010.
[3] E. Babaei and M. E. S. Mahmoodieh, "Systematical method of designing the elements of the Cuk converter," International J. of Electrical Power & Energy Systems, vol. 55, pp. 351-361, Feb. 2014.
[4] E. Babaei and M. Seyed Mahmoodieh, "Calculation of output voltage ripple and design considerations of SEPIC converter," IEEE Trans. on Industrial Electronics, vol. 61, no. 3, pp. 1213-1222, Mar. 2014.
[5] H. M. Mahery and E. Babaei, "Mathematical modeling of buck-boost dc-dc converter and investigation of converter elements on transient and steady state responses," International J. of Electrical Power & Energy Systems, vol. 44, no. 1, pp. 949-963, Jan. 2013.
[6] E. Babaei, M. E. S. Mahmoodieh, and H. M. Mahery, "Operational modes and output-voltage-ripple analysis and design considerations of buck-boost DC-DC converters," IEEE Trans. on Industrial Electronics, vol. 59, no. 1, pp. 381-391, Jan. 2012.
[7] E. Babaei and M. E. S. Mahmoodieh, "Analysis and investigation of energy transmission process in different operating modes of sepic converter," IET Power Electronics, vol. 7, no. 4, pp. 819-828, Oct. 2014.
[8] E. Babaei, M. E. Seyed Mahmoodieh, and M. Sabahi, "Investigating buck DC-DC converter operation in different operational modes and obtaining the minimum output voltage ripple considering filter size," J. of Power Electronics, vol. 11, no. 6, pp. 793-800, Nov. 2011.
[9] E. Babaei, K. Varesi, and N. Vosoughi, "Calculation of critical inductance in multi-input buck DC-DC converter," IET Power Electronics, vol. 9, no. 12, pp. 1034-1045, Oct. 2016.
[10] K. Varesi, S. H. Hosseini, M. Sabahi, E. Babaei, and N. Vosoughi, "An improved non-isolated multiple-input buck dc-dc converter," in Proc. 8th Power Electronics, Drive Systems & Technologies Conf., PEDSTC'17, pp. 119-124, 14-16 Feb. 2017.
[11] K. Varesi, S. H. Hosseini, M. Sabahi, E. Babaei, and N. Vosoughi, "Performance and design analysis of an improved non-isolated multiple input buck DC/DC converter," IET Power Electronics, vol. 10, no. 9, pp. 1034-1045, 2017.
[12] F. Sedaghati, S. H. Hosseini, M. Sabahi, and G. B. Gharehpetian, "Analysis and implementation of a modular isolated zero-voltage switching bidirectional dc-dc converter," IET Power Electronics, vol. 7, no. 8, pp. 2035-2049, Jul. 2014.
[13] A. Khaligh, J. Cao, and L. Young-Joo, "A multiple-input DC-DC converter topology," IEEE Trans. on Power Electronics, vol. 24, no. 3, pp. 862-868, Mar. 2009.
[14] L. Kumar and S. Jain, "Multiple-input DC/DC converter topology for hybrid energy system," IET Power Electronics, vol. 6, no. 8, pp. 1483-1501, Sep. 2013.
[15] L. Kumar and S. Jain, "A multiple source DC/DC converter topology," International J. of Electrical Power & Energy Systems, vol. 51, pp. 278-291, Oct. 2013.
[16] H. Behjati and A. Davoudi, "Single-stage multi-port DC-DC converter topology," IET Power Electronics, vol. 6, no. 2, pp. 392-403, Feb. 2013.
[17] H. Behjati and A. Davoudi, "A multiple-input multiple-output DC-DC converter," IEEE Trans. on Industry Applications, vol. 49, no. 3, pp. 1464-1479, May 2013.
[18] A. Nahavandi, M. T. Hagh, M. B. B. Sharifian, and S. Danyali, "A nonisolated multiinput multioutput DC-DC boost converter for electric vehicle applications," IEEE Trans. on Power Electronics, vol. 30, no. 4, pp. 1818-1835, Apr. 2015.
[19] M. K. Kazimierczuk, Pulse-Width Modulated DC-DC Power Converters, John Wiley & Sons, 2015.