NDLI: A new PWM control strategy for the buck converter

Content Provider	IEEE Xplore Digital Library
Author	Chao-Cheng Wu Chung-Ming Young
Copyright Year	1999
Description	Author affiliation: Dept. of Electr. Eng., Nat. Taiwan Univ. of Sci. & Technol., Taipei, Taiwan (Chao-Cheng Wu)
Abstract	A new PWM control strategy for the buck converters is presented. The proposed control strategy is based on the switching converter large signal average model linearization and use modern control theory to achieve the control laws for the expected response. Therefore, a new nonlinear PWM controller is made to implement the control law. The new nonlinear PWM controller development is based on the error between the switched variable and the control reference of expected system response to zero each cycle. As a result, the system transfer functions are derived as a function of the desired closed loop poles. Simplifying the design procedure and bringing forward all the important characteristics of the closed loop system. From a conventional control point of view: first, the proposed PWM control strategy such uses an observer approach both to reconstruct an inductor current state and to control the converter based on a current mode technique. Second, this technique also a method of indirectly implementing the sliding-mode control law. The proposed control strategy has significant advantages over conventional current mode control techniques in noise susceptibility, dynamic response and without inductor current sensing. Finally, the simulation results confirm the theory.
Starting Page	157
Ending Page	162
File Size	582431
Page Count	6
File Format	PDF
ISBN	0780357353
DOI	10.1109/IECON.1999.822189
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	1999-11-29
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Pulse width modulation Pulse width modulation converters Buck converters Sliding mode control Nonlinear control systems Control systems Inductors Switching converters Control theory Error correction
Content Type	Text
Resource Type	Article

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