A Novel Interleaved Tri-State Boost Converter With Lower Ripple and Improved Dynamic Response

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Summary DC‐DC switched mode power converter circuits are time varying and nonlinear in nature. This work analyzes the modeling and complex dynamics in voltage mode controlled (VMC) of the Boost converter in continuous conduction mode (CCM) of operation by using continuous‐time model. The switching converter is governed by naturally sampled constant frequency pulsed signals. Mathematical modeling of the boost converter numerically developed by using differential equations and tested in simulation software. The switching converter may exhibit fundamental, quasiperiodic, and chaotic oscillations by the systematic changing of converter's variables. The stability of the system investigated through the locus of the complex eigenvalues and the characteristic multipliers locating the onset of Hopf bifurcation. The one‐periodic orbit loses its stability via Hopf bifurcation, and the resulting attractor is a quasiperiodic orbit. A dSPACE controlled boost converter prototype hardware fabricated to establish the experimental studies in this work. Both the computational and experimental results have been included to validate the set analysis. It is observed that the route to chaos reached by the slow‐scale instability in this proposed work.

Section: Type‐iii Controller Dynamicsmentioning

confidence: 99%

Section: Type-iii Controller Dynamicsmentioning

confidence: 99%

Modeling and analysis of complex dynamics for dSPACE controlled closed‐loop DC‐DC boost converter

Banerjee

Ghosh

Padmanaban

2019

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“…SSA is an approximation technique which converts nonliner time-varying converter model to an approximate liner converter model. [17][18][19] The state-space analysis of HGBBC is described below.…”

Section: Small-signal Analysis Of Hgbbcmentioning

confidence: 99%

Closed‐loop control and performance analysis of a high‐gain buck‐boost converter with optimized Type III controller

Banerjee

Rana

Khuntia

2019

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Summary This paper presents the design and development of an improved high‐gain buck‐boost converter (HGBBC) with optimized Type III controller suitable for power supplies in various electrical/electronics devices. The proposed HGBBC produces higher efficiency, exhibits better performance, is less bulky, and is compact in size. The voltage gain of the proposed HGBBC is the squared times the voltage gain of the conventional buck‐boost converter (BBC). The polarity of source and load (output) voltages are the same (ie, noninverting polarity). This added advantage of the proposed converter allows it to operate the positive load voltage variation in a wider range even with small variation of duty cycle ratio of the power switches. Therefore, its application may be advantageous for electronics/electrical equipment. The proposed converter's validity is determined by its steady‐state analysis, small‐signal analysis, and closed loop control operation. A closed‐loop controlled of HGBBC utilizing optimized Type III controller has been fabricated and tested in the laboratory. The comparative studies in terms of efficiency, dynamic response, and percentage ripple content of the proposed HGBBC and existing converters have been performed. From the results, it is seen that the proposed HGBBC is performed better than other existing quadratic types of BBCs.

“…An interleaved technique is used to reduce the ripple of the input and output components and reduce the size of the capacitors required in the input and output of the converter. [31][32][33][34] Applying this technique also reduces the stress of the semiconductor power flow. Interleaved DC-DC converters are presented to decrease the current levels in the converter and the dynamic losses.…”

Section: Introductionmentioning

confidence: 99%

A transformer‐less single‐switch boost converter with high‐voltage gain and mitigated‐voltage stress applicable for photovoltaic utilizations

Yin

Ghaderi

2020

Many of the photovoltaic (PV) panels generate the low amounts of the voltages under the limited values of the powers. In order to increase these voltages to be applicable for grid utilization, DC-DC boost converters are used. A novel nonisolated transformer-less switched-capacitor-based DC-DC power boost structure is combined with the quadratic converter in this study. The proposed converter has many advantages such the low-voltage stresses on the power components, higher voltage-gain, and ability to supplying the load under the low amounts of the switching time intervals. These features lead to fewer amounts of the currents for the power components in the topology for the continuous conduction mode which means less dynamic losses and higher efficiency. Another advantage of the proposed converter is including only one power switch that simplifies the controller design for implementation purposes. A comprehensive mathematical analysis is presented and simulation with MATLAB/SIMULINK and implemented hardware test results confirm the theoretical investigations. K E Y W O R D S boost converter, continuous current mode, photovoltaic utilizations, switched-capacitor LIST OF SYMBOLS AND ABBREVIATIONS: CCM, continuous current mode; DT, duty cycle; T, time period; I C2,on , currents of capacitors C 2 for the first operation mode; I C3,on , currents of capacitor C 3 for the first operation mode; I C4,on , currents of capacitor C 4 for the first operation mode; I C5, on , currents of capacitor C 5 for the first operation mode; I C2,off , currents of capacitor C 2 for the second operation mode; I C3,off , currents of capacitor C 3 for the second operation mode; I C4,off , currents of capacitor C 4 for the second operation mode; I C5,off , currents of capacitor C 5 for the second operation mode; ID1,on, currents of diode D 1 for the first operation mode; ID 2 ,on, currents of diode D 2 for the first operation mode; ID 3 ,on, currents of diode D 3 for the first operation mode; ID 4 ,on, currents of diode D 4 for the first operation mode; ID 5 ,on, currents of diode D 5 for the first operation mode; ID 6 , on, currents of diode D 6 for the first operation mode; ID 1 ,off, currents of diode D 1 for the second operation mode; ID 2 ,off, currents of diode D 2 for the second operation mode; ID 3 ,off, currents of diode D 3 for the second operation mode; ID 4 ,off, currents of diode D 4 for the second operation mode; ID 5 , off, currents of diode D 5 for the second operation mode; ID 6 ,off, currents of diode D 6 for the second operation mode; ΔiL1, current ripples of the inductor L 1 ; ΔiL2, current ripples of the inductor L 2 ; ΔiL3, current ripples of the inductor L 3 ; ΔVo, voltage ripples of the capacitor C O ; Fs, switching frequency; ΔVc,cap, the ripple value caused by capacitor charging and discharging; P VFD , power losses by diodes.