Abstract
The dynamic performance of dc-dc power electronic converters is mainly determined by the output filtering capacitor and inductor, control loop(s) compensator(s), and the voltage conversion ratio. Normally, a larger capacitance and/or a smaller inductance are not recommended because of the extra cost and size of the capacitor and/or the increment of the inductor current ripple. The capacitor current feed-forward method has gained popularity due its fast dynamic response, simpler structure, and less sensing losses. In applications where a large voltage conversion ratio is needed, dynamic response for a load step-down scenario is worse than that of a load step-up condition. In order to alleviate this situation, a buck derived dc-dc converter is chosen. By combing the capacitor current feed-forward control and the buck derived converter topology, a novel control scheme is proposed in this paper. Simulation results containing the voltage overshoot and settling time are presented. The proposed approach is a high performance, simple structure, and low cost/volume strategy for load step-down dynamic improvements.
Recommended Citation
L. Shi et al., "Dynamic Response Improvement in a Buck Type Converter using Capacitor Current Feed-Forward Control," Proceedings of the 36th Annual Conference of the IEEE Industrial Electronics Society (2010, Glendale, AZ), pp. 445 - 450, Institute of Electrical and Electronics Engineers (IEEE), Nov 2010.
The definitive version is available at https://doi.org/10.1109/IECON.2010.5674987
Meeting Name
36th Annual Conference on IEEE Industrial Electronics Society (2010: Nov. 7-10, Glendale, AZ)
Department(s)
Electrical and Computer Engineering
Keywords and Phrases
Capacitors; Converters; Inductors; Steady-State; Switches; Transient Analysis; Capacitor Current; Control Loop; Converter Topologies; DC-DC Power; Dynamic Performance; Fast Dynamic Response; Feed-Forward; Inductor Currents; Novel Control Scheme; Output Filtering; Settling Time; Simple Structures; Simulation Result; Voltage Conversion Ratio; Voltage Overshoot; DC Power Transmission; Dynamic Response; Industrial Electronics; Voltage Regulators; DC-DC Converters
International Standard Book Number (ISBN)
978-1424452255
International Standard Serial Number (ISSN)
1553-572X
Document Type
Article - Conference proceedings
Document Version
Final Version
File Type
text
Language(s)
English
Rights
© 2010 Institute of Electrical and Electronics Engineers (IEEE), All rights reserved.
Publication Date
01 Nov 2010
Comments
Supported by the DOE Energy Storage Program through Sandia National Laboratories under Contract BD-0071-D