Open AccessValley current mode pulse train control switching converter and its energy model analysis
Author(s) -
Jin Sha,
Jianzhong Xu,
Shuhan Liu,
Shaomin Zhong
Publication year - 2014
Publication title -
wuli xuebao
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.199
H-Index - 47
ISSN - 1000-3290
DOI - 10.7498/aps.63.098401
Subject(s) - converters , oscillation (cell signaling) , transient (computer programming) , control theory (sociology) , energy (signal processing) , pulse width modulation , thermal conduction , mode (computer interface) , pulse (music) , voltage , computer science , materials science , physics , electrical engineering , control (management) , engineering , quantum mechanics , artificial intelligence , operating system , genetics , composite material , biology
Pulse train (PT) control technique is a novel discrete control technique for switching converter operating in discontinuous conduction mode (DCM). When the inductive energy storage is not zero, the low-frequency oscillation phenomenon may occur in PT controlled switching converters operating in continuous conduction mode (CCM). The low-frequency oscillation phenomenon will seriously affect the steady and transient performances of switching converters. In order to solve this problem, valley current mode pulse train (VCM-PT) control technique, which extends the application range from DCM to CCM, is proposed in this paper. The energy model of VCM-PT controlled switching converter is derived and compared with the energy model of PT controlled switching converter. Result indicates that the VCM-PT controlled CCM switching converter has the same energy transfer mode as the traditional PT controlled DCM switching converter and can eliminate fundamentally the low-frequency oscillation phenomenon.