scholarly journals Small Signal Modeling and Closed Loop Control Design of ZVS Current-fed Half-Bridge L-L Type Dc/Dc Converter with Active-Clamp

2010 ◽  
pp. 951-959 ◽  
Author(s):  
Akshay K. Rathore ◽  
Ashoka K. S. Bhat ◽  
Ramesh Oruganti
Keyword(s):  
Closed Loop ◽  
Control Design ◽  
Closed Loop Control ◽  
Small Signal ◽  
Signal Modeling ◽  
Loop Control ◽  
Active Clamp ◽  
Small Signal Modeling

A New Small-Signal AC Model and Closed Loop Control of a Three-Phase Interleaved Boost Converter

2018 ◽  
Vol 9 (1) ◽  
pp. 240
Author(s):  
H.V.Gururaja Rao ◽  
Karuna Mudliyar ◽  
R.C. Mala
Keyword(s):  
Solar Energy ◽  
Closed Loop ◽  
Boost Converter ◽  
Closed Loop Control ◽  
Phase Lag ◽  
Small Signal ◽  
Loop Control ◽  
Boost Converters ◽  
Three Phase ◽  
Interleaved Boost Converter

<table width="593" border="1" cellspacing="0" cellpadding="0"><tbody><tr><td valign="top" width="387"><p>Renewable energy sources are increasingly being used today and solar energy is the most readily and abundantly available energy source. Boost converters are an integral part of any solar energy system. In order to obtain maximum possible energy from the solar system multi-phase interleaved boost converters are used. This paper presents the small-signal ac modelling and closed loop control of three-phase interleaved boost converter. State–space modelling methodology has been adopted to have linearized equivalent model of the boost converter. The interleaved three-phase boost converter is averaged over its one switching period and perturbed with small ac variations and finally linearized around its quiescent point to have a small signal ac model.  Type III compensator is employed to improve the frequency response and closed loop control of three-phase boost converter. The controller design procedure is discussed in detail. The effect of right-half plane zero in non-minimum phase system and the appropriate pole-zero placements to overcome the maximum phase lag in such system is discussed. The compensated closed loop system is tested for load variations to observe the transient response.</p><p> </p></td></tr></tbody></table>

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