Abstract
This paper proposes a decoupling power balancing strategy with reduced current sensors for the two phase interleaved neutral point clamped DC/DC converter (NPCDC) applied in energy storage system (ESS). With the analysis of the NPCDC operation principle, an equivalent two voltage level analysis method is derived. On this basis, the power balancing strategy based on the total current time-sharing sampling method is proposed. Compared with the traditional strategy, the proposed strategy only requires two current sensors, reducing the number of current sensors by half. Meanwhile, the power balancing control is decoupled with output voltage control and capacitor voltage balancing control, which is helpful to simply the controller design. The small signal model of the proposed strategy based on the equivalent two voltage level analysis method is studied, and the controller design method is also presented in the paper. At last, the effectiveness of the proposed strategy is verified through an energy storage experimental platform, and the experimental results are presented and discussed.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
