Publication: Improvement of speed response in four-phase DC-DC converter switching using two shunt voltage-source
Date
2018
Authors
Yahaya J.A.
Mansor M.
Sulaiman S.
Journal Title
Journal ISSN
Volume Title
Publisher
Institution of Engineering and Technology
Abstract
This study proposes a technique that is able to improve the speed response of a four-phase DC-DC converter switching. The basic concept of the proposed technique is the inclusion of two shunt-connected voltage sources in series to the converter system. Using a higher input voltage to drive the load, a higher current per microsecond output system will be obtained and reverts to its nominal input upon obtaining desired references. Thus, the transient response observed when using this proposed technique is found to be much faster when compared to the conventional converter. Moreover, this technique is easily implemented as it requires only an additional voltage source, power switch, and power diode. The integrated model of the two shunt voltage-source in a four-phase DC-DC converter was simulated in MATLAB/Simulink and validated against the experimental results of a laboratory prototype, 600 W four-phase DC-DC converter. The novelty of this proposed technique is its ability to provide faster operations for critical loads applications, lower output capacitor and lower operating frequency. � The Institution of Engineering and Technology.
Description
Electric inverters; Phototransistors; Power converters; Transient analysis; Converter system; Input voltages; Integrated modeling; MATLAB /simulink; Operating frequency; Output capacitor; Power switches; Speed response; DC-DC converters