Conference paper
Analysis and Design of Bi-Directional DC-DC Converter in the Extended Run Time DC UPS System Based on Fuel Cell and Supercapacitor
Abstract-In this paper, an extended run time DC UPS system structure with fuel cell and supercapacitor is investigated. A wide input range bi-directional dc-dc converter is described along with the phase-shift modulation scheme and phase-shift with duty cycle control, in different modes. The delivered power and peak current are analyzed and calculated.
The key parameters of the bi-directional dc-dc converter, the relationships between the input voltage, phase-shift angle, ratio of the transformer and leakage inductance are analyzed and optimized. Build the system mathematic model and a novel input voltage combined with load current feedback using PI controller with anti-windup scheme to realize closed-loop control of the whole system, and verify the feasibility of the control scheme proposed by simulation.
A 1kW prototype controlled by TMS320F2808 DSP is implemented and tested. Experimental results show the validity of design.
| Language: | English |
|---|---|
| Publisher: | IEEE |
| Year: | 2009 |
| Pages: | 714-719 |
| Proceedings: | 2009 24th Annual IEEE Applied Power Electronics Conference and Exposition |
| ISBN: | 1424428114 , 1424428122 , 9781424428113 , 9781424428120 , 1509072055 and 9781509072057 |
| ISSN: | 24706647 and 10482334 |
| Types: | Conference paper |
| DOI: | 10.1109/APEC.2009.4802739 |
| ORCIDs: | Zhang, Zhe and Andersen, Michael A. E. |
Bidirectional control DC UPS system DC-DC power converters DC-DC power convertors Fuel cells Inductance Mathematical model Mathematics PI controller Phase modulation Supercapacitors TMS320F2808 DSP Uninterruptible power systems Voltage control anti-windup scheme bidirectional DC-DC converter closed-loop control fuel cell input voltage leakage inductance mathematic model phase-shift angle phase-shift modulation phase-shift with duty cycle control power 1 kW supercapacitor uninterruptible power supplies
