Performance Evaluation of Effective Multi-Structure Controllers for KY Negative Output Boost Converter

2021 ◽  
pp. 2250033
Author(s):  
P. Ramesh
Keyword(s):  
Output Voltage ◽  
Fuzzy Logic Controller ◽  
Supply Voltage ◽  
Current Mode ◽  
Boost Converter ◽  
Prototype Model ◽  
Current Loop ◽  
Loop Control ◽  
Field Programmable ◽  
Negative Output

This paper focuses on the design of multi-structure controllers (MSCs) for KY negative output boost converter (KYNOBC) functioned in continuous current mode (CCM) for low-power source applications. KYNOBC is one of the topologies of DC–DC converter that performs the positive DC input supply voltage into a negative output voltage. Dynamic behavior of KYNOBC is nonlinear in nature because of its time-changing operation. The single loop control does not regulate the multi-parameters of KYNOBC during the line and load variations owing to that it produces poor transient and dynamic analyses. With the aim of controlling the multi-parameters of KYNOBC such as inductor current and output voltage, enriching the transient and dynamic analysis, the MSCs are recommended in this paper. In our study, MSCs for KYNOBC consist of two loops such as inner proportional (P) controller inductor current loop for modulating the converter current and outer fuzzy logic controller (FLC)/proportional integral (PI) controller voltage loop for regulating the output voltage. The P and PI values are determined from the mathematical modeling of KYNOBC and the fuzzy rules are framed based on its performance without modeling equations. The behaviors of the KYNOBC with MSCs are validated at various zones by making the MATLAB/Simulink simulations and prototype model. The controller parameters are realized in prototype field programmable gate array (FPGA). The responses are recorded to indicate the dexterous of the MSCs for it.

FLC and PWM SMC for KY Boost Converter

2019 ◽  
Vol 28 (11) ◽  
pp. 1950184 ◽  
Author(s):  
K. Ramash Kumar
Keyword(s):  
Output Voltage ◽  
Fuzzy Logic Controller ◽  
Sliding Mode ◽  
Supply Voltage ◽  
Liquid Crystal Display ◽  
Light Emitting Diode ◽  
Dynamic Performance ◽  
Current Mode ◽  
Voltage Regulation ◽  
Boost Converter

This paper presents a design and implementation of fuzzy logic controller (FLC) plus PWM sliding mode controller (SMC) for 2nd order-d KY positive output voltage boost converter (KYPOVBC) operated in continuous inductor current mode (CICM). It is more suitable for steady power source in liquid crystal display (LCD), I-pad, CCTV camera, computer parts, light emitting diode (LED), renewable energy and industrial application. The 2nd order-d KYPOVBC always works in CICM and replica of synchronous rectification characteristics. The ON/OFF nature of the 2nd order-d KYPOVBC is nonlinear and their dynamic performance becomes poor. The classical linear controllers are noncapable of output voltage regulation of this converter during the high input supply voltage and load disparities. With the purpose of improving dynamic performance, an output voltage and inductor current regulation of the 2nd order-d KYPOVBC, a SMC plus FLC is designed. The state-space equations of the 2nd order-d KYPOVBC are arrived and then, SMC parameters are calculated. The FLC rules are framed according to the working nature of the 2nd order-d KYPOVBC without mathematical modeling, which is one of the major advantages of the FLC. The SMC acts as an inside loop of this converter to regulate the inductor current, whereas the FLC and proportional integral (PI) controllers act as an outside loop of the same converter for controlling the output voltage. The performance of the designed model is investigated at various operating regions by developing both the experimental and matrix laboratory (MATLAB)/simulation link (Simulink) models in comparison with the SMC plus PI controller. The results are presented to show the best performance of the designed model.

scholarly journals Performance enhancement analysis of an isolated DC-DC converter using fuzzy logic controller

2017 ◽  
Vol 7 (1.2) ◽  
pp. 186 ◽  
Author(s):  
S. Muthu Balaji ◽  
R. Anand ◽  
P. Senthil Pandian
Keyword(s):  
Fuzzy Logic ◽  
High Voltage ◽  
Output Voltage ◽  
Fuzzy Logic Controller ◽  
Performance Enhancement ◽  
Supply Voltage ◽  
Boost Converter ◽  
Open Loop ◽  
Voltage Gain ◽  
Power Application

High voltage gain dc-dc converters plays an major role in many modern industrialized applications like PV and fuel cells, electrical vehicles, dc backup systems (UPS, inverter), HID (high intensity discharge) lamps. As usual boost converter experiences a drawback of obtaining a high voltage at maximum duty cycle. Hence in order to increase the voltage gain of boost converter, this paper discusses about the advanced boost converter using solar power application. By using this technique, boost converter attains a high voltage which is ten times greater than the input supply voltage. The output voltage can be further increased to more than ten times the supply voltage by using a parallel capacitor and a coupled inductor. The voltage stress across the switch can be reduced due to high output voltage. The Converter is initially operated in open loop and then it is connected with closed loop. More over the fuzzy logic controller is used for the ripple reduction.

scholarly journals Emulator of a Boost Converter for Educational Purposes

Electronics ◽  
2020 ◽  
Vol 9 (11) ◽  
pp. 1883
Author(s):  
Paula Lamo ◽  
Ángel de Castro ◽  
Christian Brañas ◽  
Francisco J. Azcondo
Keyword(s):  
Current Mode ◽  
Boost Converter ◽  
Project Based Learning ◽  
Electronic Systems ◽  
Hardware In The Loop ◽  
Pulse Width Modulator ◽  
Digital Pulse ◽  
Digitally Controlled ◽  
Field Programmable ◽  
A Current

Project-based learning (PBL) is proposed for the development of a Hardware-in-the-Loop (HIL) platform and the design of its digital controller for an undergraduate course on Digital Electronic Systems. The objective for students is the design of a digitally controlled HIL Boost converter, a digital pulse-width modulator (DPWM) and a current mode controller, implemented in field-programmable gate array (FPGA) devices. To this end, the different parts of the project are developed and evaluated, maximizing the use of FPGA resources in the design of the HIL and DPWM blocks, and applying design techniques that minimize the use of the digital resources used in the design of the controller. Students are equipped with a new individualized educational experience, allowing them to test their technical competence and knowledge in an environment close to the reality of the industry.

scholarly journals Low Power Photo-Voltaic Harvesting Matrix Based Boost DC–DC Converter with Recycled and Synchro-Recycled Scheme

2020 ◽  
Vol 10 (4) ◽  
pp. 39
Author(s):  
Maziar Rastmanesh ◽  
Ezz El-Masry ◽  
Kamal El-Sankary
Keyword(s):  
Low Power ◽  
Output Voltage ◽  
Current Mode ◽  
Boost Converter ◽  
Boost Converters ◽  
Continuous Current ◽  
Photo Voltaic ◽  
Continuous Current Mode ◽  
Conversion Efficiencies ◽  
Voltage Conversion

Photo-voltaic (PV) power harvest can have decent efficiency when dealing with high power. When operating with a DC–DC boost converter during the low-power harvest, its efficiency and output voltage are degraded due to excessive losses in the converter components. The objective of this paper is to present a systematic approach to designing an efficient low-power photo-voltaic harvesting topology with an improved efficiency and output voltage. The proposed topology uses a boost converter with and extra inductor in recycled and synchro-recycled techniques in continuous current mode (CCM). By exploiting the non-linearity of the PV cell, it reduces the power loss and using the current stored in the second inductor, it enhances the output voltage and output power simultaneously. Further, by utilizing the Metal Oxide Silicon Field Effect Transistor’s (MOSFET) body diode as a switch, it maintains a minimum hardware, and introduces a negligible impact on the reliability. The test results of the proposed boost converters show that it achieves a decent power and output voltage. Theoretical and experimental results of the proposed topologies with a tested prototype are presented along with a strategy to maximize power and voltage conversion efficiencies and output voltage.

scholarly journals MATHEMATICAL ALGORITHM OF FUZZY LOGIC CONTROLLER FOR MULTILEVEL INVERTER CREATING VERTICAL DIVIDED VOLTAGE

2019 ◽  
Vol 59 (1) ◽  
pp. 1-11 ◽  
Author(s):  
Erol Can
Keyword(s):  
Mathematical Model ◽  
Fuzzy Logic ◽  
Fuzzy Logic Control ◽  
Pid Controller ◽  
Output Voltage ◽  
Fuzzy Logic Controller ◽  
Boost Converter ◽  
Multilevel Inverter ◽  
Logic Control ◽  
Multi Level

A 9-level inverter with a boost converter has been controlled with a fuzzy logic controller and a PID controller for regulating output voltage applications on resistive (R) and inductive (L), capacitance (C). The mathematical model of this system is created according to the fuzzy logic controlling new high multilevel inverter with a boost converter. The DC-DC boost converter and the multi-level inverter are designed and explained, when creating a mathematical model after a linear pulse width modulation (LPWM), it is preferred to operate the boost multi-level inverter. The fuzzy logic control and the PID control are used to manage the LPWM that allows the switches to operate. The fuzzy logic algorithm is presented by giving necessary mathematical equations that have second-degree differential equations for the fuzzy logic controller. After that, the fuzzy logic controller is set up in the 9-level inverter. The proposed model runs on different membership positions of the triangles at the fuzzy logic controller after testing the PID controller. After the output voltage of the converter, the output voltage of the inverter and the output current of the inverter are observed at the MATLAB SIMULINK, the obtained results are analysed and compared. The results show the demanded performance of the inverter and approve the contribution of the fuzzy logic control on multi-level inverter circuits.

scholarly journals Average and Small Signal Modeling of Negative-Output KY Boost Converter in CCM Operation

2014 ◽  
Vol 2014 ◽  
pp. 1-6 ◽  
Author(s):  
Faqiang Wang ◽  
Jing Li ◽  
Xikui Ma
Keyword(s):  
Output Voltage ◽  
Averaging Method ◽  
Transfer Functions ◽  
Boost Converter ◽  
Small Signal ◽  
Signal Model ◽  
Boost Converters ◽  
Small Signal Model ◽  
Small Signal Modeling ◽  
Negative Output

Negative-output KY Boost converter, which can obtain the negative output voltage and could be driven easily, is a good topology to overcome traditional Boost and Buck-Boost converters and it is believed that this converter will be widely used in engineering applications in the future. In this study, by using the averaging method and geometrical technique, the average and small signal model of the negative-output KY Boost converter are established. The DC equilibrium point and transfer functions of the system are derived and analyzed. Finally, the effectiveness of the established model and the correctness of the theoretical analysis are confirmed by the circuit experiment.

scholarly journals Modeling and Control System Design of Marine Controlled-Source Electromagnetic Detection Transmitter

2015 ◽  
Vol 9 (1) ◽  
pp. 571-578
Author(s):  
Tao Haijun ◽  
Zhang Yiming ◽  
Ren Xiguo
Keyword(s):  
Electromagnetic Wave ◽  
Mineral Resources ◽  
Current Mode ◽  
Response Speed ◽  
Equivalent Model ◽  
Current Loop ◽  
Large Power ◽  
Loop Control ◽  
Modeling And Control ◽  
Controlled Source

Marine electromagnetic transmitter transmits large power variable frequency electromagnetic wave to the seabed so as to obtain the submarine structure and mineral resources. The mathematical model of controlled source circuit needs to be established to realize closed loop control for increasing control precision and output transient performance of the electromagnetic wave. The operation process of controlled circuit is analyzed in continuous current mode, two equivalent switching states of controlled source circuit are obtained through the analysis of the different states of the switch in a switching period. A small signal equivalent model of the system is established using small ripple approximation. For high output voltage fluctuation problem in single loop control, double loop control strategy of voltage loop and current loop is designed. The simulation and experimental results show that, the system has the advantages of fast transient response speed and good regulation performance.

Study of Bifurcation and Chaos in the Current-Mode Controlled Boost DC-DC Converter

2015 ◽  
Vol 733 ◽  
pp. 635-638
Author(s):  
Feng He Qi ◽  
Ying Sun
Keyword(s):  
Output Voltage ◽  
Model Simulation ◽  
Current Mode ◽  
Load Resistance ◽  
Boost Converter ◽  
Bifurcation And Chaos ◽  
Current Mode Control ◽  
Bifurcation Phenomena ◽  
Simulation Results ◽  
The Time Domain

This paper derives bifurcation and chaos phenomena for the Boost converter under current-mode control. The precise discrete iterative mode is compiled in M file of MATLAB to obtain the bifurcation diagram, the Poincare mapping, the discrete value of output voltage and inductor current; The piecewise smooth switch model is built in Simulink of MATLAB to obtain the phase diagram and the time-domain chart. On the basis of two models, the bifurcation phenomena under variation of a range of circuit parameters including load resistance, have been investigated. Two kinds of model simulation results had the better consistency, which were proved the existence of bifurcation and chaos phenomena in the current-mode Boost converter.

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