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.

A Nonisolated DC–DC Boost Converter With High Voltage Gain and Balanced Output Voltage

2014 ◽  
Vol 61 (12) ◽  
pp. 6739-6746 ◽  
Author(s):  
George Cajazeiras Silveira ◽  
Fernando Lessa Tofoli ◽  
Luiz Daniel Santos Bezerra ◽  
Rene Pastor Torrico-Bascope
Keyword(s):  
High Voltage ◽  
Output Voltage ◽  
Boost Converter ◽  
Voltage Gain ◽  
High Voltage Gain

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.

A ZVS DC-DC Converter with High Voltage Gain for Fuel Cell Systems

2014 ◽  
Vol 573 ◽  
pp. 83-88
Author(s):  
A. Marikkannan ◽  
B.V. Manikandan ◽  
S. Jeyanthi
Keyword(s):  
Fuel Cell ◽  
High Voltage ◽  
Output Voltage ◽  
System Analysis ◽  
Clean Energy ◽  
High Gain ◽  
Boost Converter ◽  
Voltage Gain ◽  
Zero Voltage Switching ◽  
High Voltage Gain

The interest toward the application of fuel cells is increasing in the last years mainly due to the possibility of highly efficient decentralized clean energy generation. The output voltage of fuel-cell stacks is generally below 50 V. Consequently, low-power applications with high output voltage require a high gain for proper operation. A zero-voltage-switching (ZVS) dc–dc converter with high voltage gain is proposed for fuel cell as a front-end converter. It consists of a ZVS boost converter stage and a ZVS half-bridge converter stage and two stages are merged into a single stage. The ZVS boost converter stage provides a continuous input current and ZVS operation of the power switches. The ZVS half-bridge converter stage provides a high voltage gain. The principle of operation and system analysis are presented. Theoretical analysis and simulation result of the proposed converter were verified.

scholarly journals Design and analysis of controllers for high voltage gain DC-DC converter for PV panel

2020 ◽  
Vol 11 (2) ◽  
pp. 594
Author(s):  
S. Nagaraj ◽  
R. Ranihemamalini ◽  
L. Rajaji
Keyword(s):  
High Voltage ◽  
Fuzzy Logic Controller ◽  
High Gain ◽  
Power Converter ◽  
Open Loop ◽  
Voltage Gain ◽  
Virtual Interface ◽  
Proportional Integral ◽  
Pv Panel ◽  
High Voltage Gain

Bidirectional high gain DC-DC buck boost converter is a virtual interface among PV source and inverter fed motor drive. In this article, a PV panel integrating a non-isolated bidirectional DC/DC converter that has high voltage gain voltage and a 3 phase three level DC/AC inverter is projected. It highlights the comparison between proportional integral controller (PIC), fractional order proportional integral derivative Controller (FOPIDC) and fuzzy logic controller (FLC) based Bidirectional DC/DC Power Converter System (BDDPCS). The design, model and simulation using SIMULINK of open loop BDDPCS and closed loop PIC, FOPIDC and FLC based BDDPCS are done and the results are discussed. The findings indicate higher performance for FLC based control of BDDPCS. The proposed BDDPCS has merits such as bidirectional power transferability, lesser hardware count with enhanced dynamic response. The hardware of BDDPCS is tested and the experiment result is compared in association with simulation results.

scholarly journals A Voltage Multiplier Circuit Based Quadratic Boost Converter for Energy Storage Application

2020 ◽  
Vol 10 (22) ◽  
pp. 8254
Author(s):  
Javed Ahmad ◽  
Mohammad Zaid ◽  
Adil Sarwar ◽  
Chang-Hua Lin ◽  
Shafiq Ahmad ◽  
...  
Keyword(s):  
Output Voltage ◽  
Low Voltage ◽  
High Gain ◽  
Boost Converter ◽  
Voltage Gain ◽  
Voltage Multiplier ◽  
High Voltage Gain ◽  
Power Application ◽  
High Output Voltage ◽  
Multiplier Circuit

In this paper, a new transformerless high voltage gain dc-dc converter is proposed for low and medium power application. The proposed converter has high quadratic gain and utilizes only two inductors to achieve this gain. It has two switches that are operated simultaneously, making control of the converter easy. The proposed converter’s output voltage gain is higher than the conventional quadratic boost converter and other recently proposed high gain quadratic converters. A voltage multiplier circuit (VMC) is integrated with the proposed converter, which significantly increases the converter’s output voltage. Apart from a high output voltage, the proposed converter has low voltage stress across switches and capacitors, which is a major advantage of the proposed topology. A hardware prototype of 200 W of the proposed converter is developed in the laboratory to validate the converter’s performance. The efficiency of the converter is obtained through PLECS software by incorporating the switching and conduction losses.

scholarly journals Implementation of Fuzzy Logic Controller for DC–DC step Down Converter

2021 ◽  
Vol 10 (8) ◽  
pp. 109-112
Author(s):  
Shaik Gousia Begum ◽  
Syed Sarfaraz Nawaz ◽  
G. Sai Anjaneyulu
Keyword(s):  
Fuzzy Logic ◽  
Output Voltage ◽  
Fuzzy Logic Controller ◽  
Supply Voltage ◽  
Buck Converter ◽  
Buck Converters ◽  
Major Drawback ◽  
Dc Voltage ◽  
Overall Efficiency ◽  
Step Down

This paper presents the design of a Fuzzy logic controller for a DC-DC step-down converter. Buck converters are step-down regulated converters which convert the DC voltage into a lower level standardized DC voltage. The buck converters are used in solar chargers, battery chargers, quadcopters, industrial and traction motor controllers in automobile industries etc. The major drawback in buck converter is that when input voltage and load change, the output voltage also changes which reduces the overall efficiency of the Buck converter. So here we are using a fuzzy logic controller which responds quickly for perturbations, compared to a linear controllers like P, PI, PID controllers. The Fuzzy logic controllers have become popular in designing control application like washing machine, transmission control, because of their simplicity, low cost and adaptability to complex systems without mathematical modeling So we are implementing a fuzzy logic controller for buck converter which maintains fixed output voltage even when there are fluctuations in supply voltage and load. The fuzzy logic controller for the DC-DC Buck converter is simulated using MATLAB/SIMULINK. The proposed approach is implemented on DC-DC step down converter for an input of 230V and we get the desired output for variations in load or references. This proposed system increases the overall efficiency of the buck converter.

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