Design and implementation of luco converter

Design and implementation of luco converter

1. IEEE7th RV College of Engineering Go, change the world MINOR PROJECT SUBMITTED BY: R RAKSHITH      (1RV22EPE11) YUVARAJ R         (1RV22EPE18) Phase-II Presentation UNDER THE GUIDENCE OF: DR. HEMALATHA J N Associate Professor Dept. Of EEE, RVCE. RV College of Engineering Department of Electrical & Electronic Engineering “DESIGN AND DEVELOPMENT OF POSITIVE OUTPUT SUPER-LIFT LUO-CONVERTER”

2. IEEE7th RV College of Engineering Go, change the world TABLE OF CONTENTS INTRODUCTION WORKING DESIGN PROPOSED BLOCK DIAGRAM EXPECTED WAVEFORMS LITERATURE REVIEW ADVANTAGES APPLICATIONS REFERENCES RV College of Engineering Dept. of EEE 2

3. IEEE7th RV College of Engineering Go, change the world INTRODUCTION Luo converters are developed from the fundamental DC – DC converters. They are derived from fundamental converters by the addition of a low-pass filter The output voltage ripple of Luo converters is usually small and can be lower than 10% and it has high voltage gain. There are many voltage building techniques adopted in conversion stages, namely, voltage lift technique and super- lift technique in the case of Luo DC – DC converters. In the voltage lift technique, the output voltage is increased step by step in arithmetic progression. In the super-lift technique, the output voltage increases geometrically. RV College of Engineering Dept. of EEE 3

4. IEEE7th RV College of Engineering Go, change the world WORKING RV College of Engineering Dept. of EEE 4 Figure 1: Schematic diagram of POSLC

5. IEEE7th RV College of Engineering Go, change the world WORKING RV College of Engineering Dept. of EEE 5 Figure 2: Schematic diagram of POSLC when switch is turned ON Figure 3: Schematic diagram of POSLC when switch is turned OFF

6. IEEE7th RV College of Engineering Go, change the world WORKING RV College of Engineering Dept. of EEE 6 The circuit consists of One switch, one inductor, 2 capacitors C1 & C2, and 2 diodes D1 & D2 make up the circuit. The load is a resistive load R, the conduction duty ratio is K and the switching frequency is f (period T= 1/f). Depending on the switch, it has two functioning stages - when MOSFET is ON & OFF. The Luo converter can be used for both step-up and step-down applications. As the inductance is energized by switching on, the capacitor gets charged through the diodes. During the off period, the capacitor discharges to the load.

7. IEEE7th RV College of Engineering Go, change the world DESIGN RV College of Engineering Dept. of EEE 7 The design values for the proposed positive output super lift Luo converter are derived based on the considerations as follows: The input voltage (V s ) to the POSLC is given as 12V which is provided by a constant DC source. The output voltage (Vo) for the load resistance R of 100Ω is obtained as 36V.   The formula for transfer gain (G) is expressed as, Vo = (2−K) Vin (1−K ) ,where K is the duty ratio Rewritten as, V o − V o K= 2V in − V in K V in K − V o K = 2V in − V o Thus, K = 2Vin−Vo Vin−Vo

8. IEEE7th RV College of Engineering Go, change the world DESIGN RV College of Engineering Dept. of EEE 8 K = ((2×12)−36) /( 12−36) K = 0.5 ≈ 50% The output current Io is obtained from Ohm’s law as, V o = I o R Rearranged as, I o = Vo R Io = 36 / 100 = 0.36A Input power = Output power Vin* Iin = Vo*Io The value of I in is obtained as, 12I in = 36 × 0.36 I in = 1.08A Let us assume that 5% of ripples in the output current, then the value of ∆i l1 = 5% of I in = 0.05 × 1.08∆i l1 = 0.054

9. IEEE7th RV College of Engineering Go, change the world DESIGN RV College of Engineering Dept. of EEE 9 Let us assume that 5% of ripples in the output current, then the value of ∆i l1 = 5% of I in = 0.05 × 1.08∆i l1 = 0.054 The value of inductor 𝐿 1 is calculated using the formula, ∆i l1 = Vo−2Vin (1 − K)T L1 L1 = V o − 2V in (1 − K) ∆i l1 f L1 = 36 − 2(12) (1 − 0.5) 0.054 50000 L 1 = 2.22 mH

10. IEEE7th RV College of Engineering Go, change the world DESIGN RV College of Engineering Dept. of EEE 10 Let 5% of ripple content in the output voltage, ∆V o = 5% of V o ∆V o = 0.05 × 36 ∆V o = 1.8 The formula to find the value of capacitance 𝐶 2 is, ∆Vo = (1 − K) V o fC 2 R Rearranged as, C2 = (1 − K) V o f∆V o R C2 = ((1−0.5)36)/ ( 50000×1.8×100) C 2 = 2 × 10 −6 F The values of both the capacitances 𝐶 1 and 𝐶 2 are equal, C 2 = C 1 Therefore, C 1 = 2× 10 −6 F

11. IEEE7th RV College of Engineering Go, change the world DESIGN RV College of Engineering Dept. of EEE 11 Parameters POSLC Vin 12V Vo 36V L 1 2.22 ∗ 10 −3 H C 1 2*10 −6 F C 2 2*10 −6 F R 100Ω K 0.5 Design Values for Positive Output Super-Lift Luo Converter

12. IEEE7th RV College of Engineering Go, change the world PROPOSED BLOCK DIAGRAM RV College of Engineering Dept. of EEE 12

13. IEEE7th RV College of Engineering Go, change the world EXPECTED WAVEFORMS RV College of Engineering Dept. of EEE 13 Figure5: PV Output Voltage Closed LoopPOSLC Figure 4: Output Voltage of POSLC for Open Loop

14. IEEE7th RV College of Engineering Go, change the world LITERATURE REVIEW RV College of Engineering Dept. of EEE 14 SL NO. TITLE AUTHOR’S NAME/ YEAR OF  PUBLICATION SUMMARY 1. Design And Simulation of LUO Converter Topologies For Photovoltaic Applications Mr.M.Chilambarasan , Dr.M.Ramesh Babu , Ms.R.Sujatha , 2014, IJAER. In this paper, four converters with voltage-lift circuit are analyzed: Positive output elementary Luo converter, Negative output elementary Luo converter, Positive output self-lift Luo converter, Negative output self-lift Luo converter. . All Luo -Converters implementing the voltage lift technique, avoid taking too high value of the conduction duty k. For the same value of duty cycle increased output voltage is obtained for self lift Luo converters compared to the elementary Luo converters. The effects of parasitic elements are overcome effectively which ultimately increases the output voltage of these DC-DC converters 2. Implementation of Positive Output Super Lift Luo Converter for Photo Voltaic System Prasanna K, Kirubakaran D, Rahulkumar J and Rudhran J A, 2015,IRJET. The POSLC performs the voltage conversion from positive source voltage to positive load voltage. The application of positive output triple lift luo converter in solar pv system produces voltages increasing in geometric progression. It produces output voltage of 220V for the input voltage of 40V from solar pv system. The converter have proved to be Robustness around the operating point, Good dynamic performance in the presence of input voltage variations and Invariant dynamic performance in presence of varying operating conditions

15. IEEE7th RV College of Engineering Go, change the world LITERATURE REVIEW RV College of Engineering Dept. of EEE 15 SL NO. TITLE AUTHOR’S NAME/ YEAR OF  PUBLICATION SUMMARY 3. Comparative Analysis of LUO Converter with and Without MPPT for PV Applications Bhumika K S , Madhumitha G , Priya S , Rajesh Uppara , 2022, JMMF. This paper presents- “ Luo converter” which works efficiently compared to other market available converters to extract maximum power from a solar panel. The combination of LUO-MPPT results most efficient to extract Maximum Generation from the panel. As a result of utilizing the MPPT algorithm with the Luo converter, the voltage level shoots up, increasing the amount of power generated by solar panels . 4. Fuzzy Logic Control for Renewable Source DC-DC Boost Converter using MATLAB G.C.Sowparnika , A.Sivalingam , M.Thirumarimurugan , 2015, IJETER. In this article, the boost converter for 300V is designed. The main drawback of the power converter is the unlimited supply of voltage and current. In order to control the output voltage with variations in the input voltage, a Fuzzy Logic Controller (FLC) is designed. The output voltage of Boost converter can be stabilized using variable duty cycle generated by the fuzzy logic controller. Boost converter with closed loop FLC precisely improved the dynamic response of the converter system

16. IEEE7th RV College of Engineering Go, change the world ADVANTAGES Higher voltage ranges can be obtained at a lower gain value Higher efficiency achieved at the output Low ripple content Low switching loss Higher power density Large DC gain RV College of Engineering Dept. of EEE 16

17. IEEE7th RV College of Engineering Go, change the world APPLICATIONS Computer peripheral equipment Industrial applications, especially for high output voltage projects Photovoltaic applications. EV applications. RV College of Engineering Dept. of EEE 17

18. IEEE7th RV College of Engineering Go, change the world REFERENCES Mr.M.Chilambarasan , Dr.M.Ramesh Babu , Ms.R.Sujatha , Design And Simulation of LUO Converter Topologies For Photovoltaic Applications, 2014 ,International Journal of Applied Engineering Research. Prasanna K, Kirubakaran D, Rahulkumar J and Rudhran J A, Implementation of Positive Output Super Lift Luo Converter for Photo Voltaic System, 2015, International Research Journal of Engineering and Technology. Bhumika K S , Madhumitha G , Priya S , Rajesh Uppara , Comparative Analysis of LUO Converter with and Without MPPT for PV Applications, 2022, Journal of Mines, Metals and Fuels. G.C.Sowparnika , A.Sivalingam , M.Thirumarimurugan , Fuzzy Logic Control for Renewable Source DC-DC Boost Converter using MATLAB, 2015, International Journal of Emerging Technologies in Engineering Reasearch . S . Subasri , Dr. C. Govindaraju , design and analysis of luo converter based led driver, 2017, International Journal of Electrical and Electronics Research . RV College of Engineering Dept. of EEE 18

19. IEEE7th RV College of Engineering Go, change the world REFERENCES 6. Luo , F.L., and Ye, H.: ‘Advanced DC-DC converters’ (CRC Press, Boca Raton, FL, USA, 2004) 7. Anushka Tekade , Rahul Juneja , Manish Kurwale and Prashant Debre , 2016, Design of Super lift Luo Boost Converter for Solar Inverter, International Conference on Energy Efficient Technologies for Sustainability (ICEETS). 8.  Fang Lin Luo and Hong Ye, 2003, Positive output super-lift converters, IEEE Transactions on Power Electronics 18 105-113. 9. Luo F L and Ye H 2001 Chapter 17, DC/DC Conversion Techniques and Nine Series Luo -Converters of the Power Electronics, Handbook Edited by Rashid M H, Academic Press, San Diego, USA. 10. So W C, Tse C K, and Lee Y S, 1996, Development of a fuzzy logic controller for DC-DC converters: Design, computer simulation, and experimental evaluation, IEEE Transactions on Power Electronics 11 24-31. 11. Chetan P. Ugale , Dhumale R B and Dixit V V , 2015, DC-DC Converter Using Fuzzy Logic Controller, International Journal of Engineering and Technology 2(4) 593-596 RV College of Engineering Dept. of EEE 19

20. IEEE7th RV College of Engineering Go, change the world THANK YOU! RV College of Engineering Dept. of EEE 20