Asymmetrical leading-triangle modulation technique for improved digital valley current controlled switching DC-DC converters

Author

Zhou, Guohua ; Xu, Jianping ; Zhang, Fei ; Qin, Ming ; Jin, Yanyan

Author_Institution

Sch. of Electr. Eng., Southwest Jiaotong Univ., Chengdu, China

fYear

2010

fDate

12-16 Sept. 2010

Firstpage

237

Lastpage

241

Abstract

Conventional leading-triangle modulation is essentially a symmetrical leading-triangle modulation. To overcome the subharmonic oscillations of improved digital valley current (IDVC) controlled switching dc-dc converters with symmetrical leading-triangle modulation, asymmetrical leading-triangle modulation technique for IDVC controlled switching dc-dc converters is studied in this paper. The subharmonic oscillations of IDVC control with symmetrical leading-triangle modulation can be avoided with asymmetrical leading-triangle modulation. Experimental results show that the control performance of IDVC controlled switching converters with asymmetrical leading-triangle modulation is better than that with symmetrical leading-triangle modulation.

Keywords

DC-DC power convertors; digital control; electric current control; harmonics suppression; modulation; switching convertors; asymmetrical leading triangle modulation; digital valley current control; subharmonic oscillations; switching DC-DC converters; symmetrical leading-triangle modulation; Converters; Inductors; Modulation; Oscillators; Steady-state; Switches; Digital control; digital valley current control; leading-triangle modulation; switching dc-dc converters;

fLanguage

English

Publisher

ieee

Conference_Titel

Energy Conversion Congress and Exposition (ECCE), 2010 IEEE

Conference_Location

Atlanta, GA

Print_ISBN

978-1-4244-5286-6

Electronic_ISBN

978-1-4244-5287-3

Type

conf

DOI

10.1109/ECCE.2010.5618035

Filename

5618035