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Title: A new bidirectional DC-DC converter with a high step-up/down conversion ratio for renewable energy applications
Authors: Chen, MM
Cheng, KWE 
Keywords: Bidirectional power flow
High conversion ratio
Low voltage stress
Switched-capacitor-inductor cell
Issue Date: 2017
Source: 2016 International Symposium on Electrical Engineering, ISEE 2016, 7845991 How to cite?
Abstract: A new bidirectional DC-DC converter based on switched-capacitor-inductor cell was proposed. It features: high step-up/down conversion ratio with a moderate duty cycle; low voltage stress on the switches; non-pulsating input current (step-up mode); easiness of control and driving circuit. The proposed converter contains five switches and four reactive elements (two capacitors and two inductors). It can achieve quadratic-like conversion ratio. Steady-state for both step-up mode and step-down mode were analyzed in this paper and the proposed converter was simulated by PSIM. Results of step-up mode from 66V to 400V, or step-down mode from 400V to 66V, matched the theoretical analysis. Further examinations and experiments can be done to optimize the performance of the circuit. The proposed converter can be widely used as front-end to renewable energy system, e.g. between battery and DC bus, where bidirectional power flow is required.
Description: 2016 International Symposium on Electrical Engineering, ISEE 2016, Hong Kong, 14 December 2016
ISBN: 9781509058839
DOI: 10.1109/EENG.2016.7845991
Appears in Collections:Conference Paper

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