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A New Sensorless Control Scheme Using Simple Duty Feedback Technique in DC/DC Converters  

이동윤 (한양대학교 대학원 전기공학과)
노형주 (한양대학교 대학원 전기공학과)
현동석 (한양대학교 전자전기공학부)
Publication Information
The Transactions of the Korean Institute of Power Electronics / v.7, no.6, 2002 , pp. 554-562 More about this Journal
Abstract
This paper presents a new sensorless control scheme using simple duty signal feedback technique in DC/DC converters. The proposed Duty Feedback Control(DFC) has the characteristics that they show the same as operation performance of current mode control by using duty feedback technique without current sensor as well as present faster dynamic response performance than conventional Sensorless Current Mode(SCM) control in case that input source is perturbed by step change or DC input source includes the harmonics. Also, the proposed control scheme has good noise immunity and simple control circuits since they have one feedback loop, and can be applied to all DC/DC converters. The concept and control principles of the proposed control scheme are explained in detail and the validity of the proposed control scheme is verified through several interesting simulated and experimental results.
Keywords
Duty Feedback Control(DFC); Sensorless Control Scheme(SCM); Current Mode Control; Faster dynamic response Performance;
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