Modeling, Analysis and Design of Synchronous Buck Converter Using State Space Averaging Technique for PV Energy System

Suman, Gampala; Kumar, Bhavnesh; Kumar, Manikant; Babu, B. Chitti; Subhashini, K. R.

doi:10.1109/ised.2012.27

Cited by 17 publications

(6 citation statements)

References 4 publications

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“…This causes the Buck converter to become a non-linear system. The state space averaging method is a powerful method for analyzing non-linear systems such as Buck converters [28].…”

Section: State Space Model Of Dc-dc Buck Convertermentioning

confidence: 99%

Simple formula for designing the PID controller of a DC-DC buck converter

Samosir

Sutikno

2023

IJPEDS

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This paper proposes a simple way to design a proportional integral derivative proportional integral derivative (PID) controller for a DC-DC buck converter. This work concerns getting the formula to calculate Kp, Ki, and Kd parameters from a PID controller easily. The main advantage of this formula is that the tuning process of the KP, KI and KD parameters of the PID controller will be simplified just by entering the R, L, and C component values of the buck converter into the formula. The synthesis process of the formula is explained step by step. State space analysis is used to model the equations and transfer functions of the buck converter. The transfer function of the PID controller and buck converter was analyzed to obtain the Buck Converter system's closed loop transfer function. The formula for calculating the parameters KP, KI and KD of the PID controller is derived from the closed loop transfer function of the buck converter system. Numerical simulations are provided to confirm the effectiveness of the proposed PID controller. The performance of the buck converter controlled by the proposed PID controller was tested under various load conditions.

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“…This causes the Buck converter to become a non-linear system. The state space averaging method is a powerful method for analyzing non-linear systems such as Buck converters [28].…”

Section: State Space Model Of Dc-dc Buck Convertermentioning

confidence: 99%

Simple formula for designing the PID controller of a DC-DC buck converter

Samosir

Sutikno

2023

IJPEDS

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“…45,58 Providing a substantial insight and its simplicity for both derivation and implementation has made the method a very useful and convenient tool in the applications of power electronics devices. 58,59 The outline of the modeling is summarized in Figure 12. There are two states determined according to ON-and-OFF the transistor in the circuit, so SMPS circuit analysis consists of two topologies.…”

Section: Modeling Of Switch Mode Power Suppliesmentioning

confidence: 99%

Fast‐converging robust PR‐P controller designed by using symmetrical pole placement method for current control of interleaved buck converter‐based PV emulator

Yanarateş

Zhou

2021

Energy Science & Engineering

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“…Assuming R C and R L as the equivalent series resistance of the capacitor and the inductor, respectively. The state space equation for two modes is represented as follows by considering inductor current i L and capacitor voltage v C as the two state variables of the converter (Suman et al, 2012):…”

Section: Modelling Of the Synchronous Rectifier Buck Convertermentioning

confidence: 99%

A comparative study of phase margin based digital and analog controlled synchronous buck with optimum LC filter

Rashmi

Jagtap

2019

COMPEL

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Purpose Traditionally, industrial power supplies have been exclusively controlled through analog control to sustain high reliability with low cost. However, with the perpetual decrement in cost of digital controllers, the feasibility of a digitally controlled switch mode power supply has elevated significantly. This paper aims to outline the challenges related to the design of digital proportional-integral (PI) controlled synchronous rectifier (SR) buck converter by comparing controller performance in continuous and discrete time. The trapezoidal approximation-based digital PI control is designed for low voltage and high-frequency SR buck converter operating under continuous conduction mode. Design/methodology/approach The analog and digital controller are designed using a SISO tool of MATLAB. Here, zero-order hold transform is used to convert the transfer function from continuous to discrete time. Frequency and time domain analysis of continuous plant, discrete plant and close loop system is performed. The designed digital PI control is simulated in MATLAB Simulink. The simulated results is also verified on hardware designed around digital signal processing control. Findings The continuous and discrete control loops are validated with multiple tests in the time and frequency domain. The detailed steady state theoretical analysis and performance of the SR buck converter is presented and verified by simulation. It is found that the delay in digital control loop results in a low phase margin. This phase margin decreases with higher bandwidth. The hardware experiments with the digital control loop are carried out on a 10 W prototype. The chosen parameters for the SR buck converter are found to be optimum for steady and transient state response. Originality/value This paper compares the digital and analog control approach of compensator design. It focuses on the implications created at the time of transforming the control design from continuous to discrete time. Further, it also focuses on the selection of parameters such as phase margin, bandwidth and low pass filter.

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Modeling, Analysis and Design of Synchronous Buck Converter Using State Space Averaging Technique for PV Energy System

Cited by 17 publications

References 4 publications

Simple formula for designing the PID controller of a DC-DC buck converter

Simple formula for designing the PID controller of a DC-DC buck converter

Fast‐converging robust PR‐P controller designed by using symmetrical pole placement method for current control of interleaved buck converter‐based PV emulator

A comparative study of phase margin based digital and analog controlled synchronous buck with optimum LC filter

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