Design of Dc-Dc converter for integration of sources

Author

Pachpor, Snehal ; Suryawanshi, H.M.

Author_Institution

Electr. Eng. Dept., Visveswaraya Nat. Inst. of Technol., Nagpur, India

fYear

2014

fDate

16-19 Dec. 2014

Firstpage

1

Lastpage

5

Abstract

This paper presents practical design aspects of a high-power DC-DC converter which is applicable to renewable sources for dc grid. The output voltage of a dc-dc resonant converter can be varied by adjusting the switching frequency. In order to maintain output voltage constant from full load to no load using conventional frequency control, the range of switching frequency variation is very high. This consequently increases switching losses, electromagnetic interference which deteriorates the system performance especially for light loads. This paper proposes an algorithm to maintain output voltage constant by variable switching frequency and duty cycle with combined effect. The response using proposed algorithm is tested with 250 W, 110/480V dc-dc resonant converter and performance is analyzed using PSIM simulation.

Keywords

DC-DC power convertors; frequency control; resonant power convertors; DC-DC resonant converter; PSIM simulation; dc grid; duty cycle; electromagnetic interference; frequency control; high-power DC-DC converter; switching frequency; switching losses; variable switching frequency; Frequency control; Frequency conversion; Resonant frequency; Switches; Switching frequency; Voltage control; Resonant converter; combined frequency duty ratio control;

fLanguage

English

Publisher

ieee

Conference_Titel

Power Electronics, Drives and Energy Systems (PEDES), 2014 IEEE International Conference on

Conference_Location

Mumbai

Print_ISBN

978-1-4799-6372-0

Type

conf

DOI

10.1109/PEDES.2014.7042096

Filename

7042096