SLIDING REVIEW.pptx

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SachinCS19

SLIDING MODE OF BOOST CONVERTER

Technology

SLIDING MODE CONTROL OF DC-DC
CONVERTER
PRESENTED BY
SACHIN C.S
UNDER THE GUIDANCE OF
GURU NAYAK
1

 Sliding mode controller(SMC) is a kind of nonlinear controller which was introduced for
controlling variable structure systems.
 An ideal sliding mode exists only when the system state satisfies the dynamic equation that
governs the sliding mode for all time. This requires an infinite switching, in general, to ensure
the sliding motion.
 The sliding mode control approach is recognized as one of the efficient tools to design robust
controllers for complex high-order nonlinear dynamic plant operating under uncertainty
conditions.
 SMC design provides a systematic approach to the problem of maintaining stability and
consistent performance.
INTRODUCTION
2

Problem Statement
 Different control algorithms are applied to regulate dc-dc converters to achieve a robust output voltage. As dc-dc
converters are non linear and time variant systems, the application of linear control techniques for control of these
converters are not suitable.
 So siding mode control technique suitable for dc-dc converters must cope with their intrinsic nonlinearity and
wide input voltage and load variations, ensuring stability in any operating condition by providing fast transient
response.
3

LITERATURE REVIEW
 In 2006, Y.M. Lai [1], presents a unified approach to the design of fixed frequency PWM
based sliding mode controllers(SMC) for dc-dc converters operating in the continuous
conduction mode. Hence the strength of SM controller in terms of robustness in the dynamic
behavior is demonstrated.
 In 2008, Siew-chong Tan [2], examines the practical design issues of (SMC) as applied to the
control of dc-dc converters and performance is compared with linear control.
 In 2014, Liqun Shen[3], presents adaptive SM control method for dc-dc converters. Results in
the static error of the output voltage is eliminated.
 In 2015, Irfan Yazici [4], a fast terminal sliding mode control scheme is proposed for the
voltage tracking control of dc dc boost converter. Results with short settling time and small
overshoot.
4

Basic principles of SM control
 The basic idea of SM control is to design first a sliding surface in state space and
then the second is to design a control law.
 The existence, stability and hitting condition are the three factors for the stability
of sliding mode control.
5

Step 1: To meet Hitting Condition
Step 2: To meet Existence condition
Step 3: To meet Stability condition
6

REFERENCES
 Siew Chong Tan, Y.M Lai ”A unified approach to the design of PWM based sliding mode
voltage controllers for dc-dc converters in continuous conduction mode”, IEEE Trans.
Circuits System.,vol.53,No.8, Aug.2006.
 Siew Chong Tan, Y.M Lai “General design issues of sliding mode controllers in dc-dc
converters”, IEEE Trans. Circuits System.,vol.55,No.3, Mar.2008
 Liqun Shen, Dylan Dah-Chuan “Adaptive sliding mode control method for dc-dc
converters” ,IET power Electronics Dec.2014
 Irfan Yazici, Ersagun Kursat “Fast and robust voltage control of dc-dc boost converter by
using fast terminal sliding mode controller”, IEEE Trans, Jan 2015.
8

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SLIDING REVIEW.pptx

1. SLIDING MODE CONTROL OF DC-DC CONVERTER PRESENTED BY SACHIN C.S UNDER THE GUIDANCE OF GURU NAYAK 1

2.  Sliding mode controller(SMC) is a kind of nonlinear controller which was introduced for controlling variable structure systems.  An ideal sliding mode exists only when the system state satisfies the dynamic equation that governs the sliding mode for all time. This requires an infinite switching, in general, to ensure the sliding motion.  The sliding mode control approach is recognized as one of the efficient tools to design robust controllers for complex high-order nonlinear dynamic plant operating under uncertainty conditions.  SMC design provides a systematic approach to the problem of maintaining stability and consistent performance. INTRODUCTION 2

3. Problem Statement  Different control algorithms are applied to regulate dc-dc converters to achieve a robust output voltage. As dc-dc converters are non linear and time variant systems, the application of linear control techniques for control of these converters are not suitable.  So siding mode control technique suitable for dc-dc converters must cope with their intrinsic nonlinearity and wide input voltage and load variations, ensuring stability in any operating condition by providing fast transient response. 3

4. LITERATURE REVIEW  In 2006, Y.M. Lai [1], presents a unified approach to the design of fixed frequency PWM based sliding mode controllers(SMC) for dc-dc converters operating in the continuous conduction mode. Hence the strength of SM controller in terms of robustness in the dynamic behavior is demonstrated.  In 2008, Siew-chong Tan [2], examines the practical design issues of (SMC) as applied to the control of dc-dc converters and performance is compared with linear control.  In 2014, Liqun Shen[3], presents adaptive SM control method for dc-dc converters. Results in the static error of the output voltage is eliminated.  In 2015, Irfan Yazici [4], a fast terminal sliding mode control scheme is proposed for the voltage tracking control of dc dc boost converter. Results with short settling time and small overshoot. 4

5. Basic principles of SM control  The basic idea of SM control is to design first a sliding surface in state space and then the second is to design a control law.  The existence, stability and hitting condition are the three factors for the stability of sliding mode control. 5

6. Step 1: To meet Hitting Condition Step 2: To meet Existence condition Step 3: To meet Stability condition 6

7. 7

8. REFERENCES  Siew Chong Tan, Y.M Lai ”A unified approach to the design of PWM based sliding mode voltage controllers for dc-dc converters in continuous conduction mode”, IEEE Trans. Circuits System.,vol.53,No.8, Aug.2006.  Siew Chong Tan, Y.M Lai “General design issues of sliding mode controllers in dc-dc converters”, IEEE Trans. Circuits System.,vol.55,No.3, Mar.2008  Liqun Shen, Dylan Dah-Chuan “Adaptive sliding mode control method for dc-dc converters” ,IET power Electronics Dec.2014  Irfan Yazici, Ersagun Kursat “Fast and robust voltage control of dc-dc boost converter by using fast terminal sliding mode controller”, IEEE Trans, Jan 2015. 8

9. 9

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