Dam, SK and John, V (2019) A selection switch based cell-to-cell battery voltage equalizer with reduced switch count. In: 11th Annual IEEE Energy Conversion Congress and Exposition, ECCE 2019, 29 September 2019 - 3 October 2019, Baltimore, pp. 2674-2681.
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Abstract
Selection switch based cell-to-cell voltage equalizer circuit provides a low-cost solution where the exchange of power is between the most overcharged cell and the most undercharged cell. This can be achieved with good equalization speed. This kind of equalizer has one dc-dc converter shared by all the batteries and a selection switch network to select one pair of batteries at a time for equalization. If the switches in the selection network are implemented by relays then cost of the equalizer is further reduced. A capacitively level shifted Cuk converter is shown to be suitable for such an equalizer and a relay based selection switch network is proposed in this work. It is shown that the number of relays is significantly reduced in the proposed relay network, especially when the number of cells is large. An initial voltage drop compensation based approach is used to reduce the numbers of operations of the relays in the circuit and to speed up the equalization process. The proposed topology is verified with a 24W prototype which shows a good efficiency and convergence of battery voltages with a small number of switchings of the relays. © 2019 IEEE.
| Item Type: | Conference Paper |
|---|---|
| Publication: | 2019 IEEE Energy Conversion Congress and Exposition, ECCE 2019 |
| Publisher: | Institute of Electrical and Electronics Engineers Inc. |
| Additional Information: | The copyright for this article belongs to Institute of Electrical and Electronics Engineers Inc. |
| Department/Centre: | Division of Electrical Sciences > Electrical Engineering |
| Date Deposited: | 09 Dec 2022 08:57 |
| Last Modified: | 09 Dec 2022 08:57 |
| URI: | https://eprints.iisc.ac.in/id/eprint/78822 |
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