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ISSN ONLINE(2278-8875) PRINT (2320-3765)

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A Comparative study on different types of Integrated Boost Resonant Converters

B.Arunkumaran1, G.Arthiraja1, Ammal Dhanalakshmi1 and S.Satishkumar2
  1. PG Scholar, Dept of Electrical and Electronics, Jeppiaar Engineering College, Chennai, India
  2. Associate Professor, Dept of Electrical and Electronics, Jeppiaar Engineering College, Chennai, India
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International Journal of Advanced Research in Electrical, Electronics and Instrumentation Engineering

Abstract

This paper does a comparative study on different types of Integrated Boost Resonant converters like series LC, parallel LC, LLC, LCC converters. The IBR converter of different types was fed with input supply of 12 v dc from solar PV with Transformer turns ratio 1:n for Resistive loads. On this comparative study it was evaluated that the best performance was attained for Integrated Boost LCC Resonant converter , which gives high step up voltage with high efficiency. The above mentioned different configurations of IBR Converters was simulated by using MATLAB/Simulink.

Keywords
Integrated Boost Resonant (IBR), Photovoltaic (PV), Inductor (L), Capacitor (C).

INTRODUCTION
The Integrated Boost Resonant converter is a DC-DC Converter which has a dc input, Resonant Inverter which converts dc into ac and is given to a high step up transformer with turns ratio 1:n. The transformer does the step up in voltage and fed to a voltage doubler circuit [1]-[3] which converts ac into dc as well as doubles the voltage thus resulting in a high step up dc voltage in the output side. The different configurations of Resonant converters are series LC [4], parallel LC, LLC Resonant converter [5], LCC Resonant converter [6]-[8], and these topologies are simulated in IBR Converter with solar PV [9][10][11] as input for Resistive loads. Solar Photovoltaic cell produces dc electrical energy which is fed as input for the different IBR Converter Configurations. In the simulation, solar PV equivalent circuit is used from which the supply is given to the IBR Converter and here 12 v dc is given as input .The conventional IBR Converter [12][13]is shown in Fig1 which is modified with different Resonant topologies and analysed for Resistive loads with solar PV input source.
In recent years photovoltaic (PV) has become attractive as a result PV market would grow up to 30 GW by 2014, due to the following policy-driven scenario [13]. The generation of electricity from solar PV panel as shown in Fig 2.One type of renewable energy source is the photovoltaic (PV) cell, which converts sunlight to electrical current, without any form for mechanical or thermal interlink. Solar PV Energy has major advantages as they are Eco friendly, no noise, no moving parts, no emissions, no use of fuels and water, minimal maintenance requirements, Long lifetime up to 30 years. Thus Solar PV is used as the input source for the converter making this project as an Eco-Friendly one.

PROPOSED DIFFERENT IBR CONVERTERS
The Proposed different IBR converter configurations like IB Series LC Resonant converter, IB Parallel LC Resonant converter, IB LLC Resonant converter, IB LCC Resonant converter with Solar PV as input for Resistive loads are discussed below.
A. IB Series LC Resonant Converter
The Integrated Boost Series LC Resonant converter Fig 3 consists of Solar PV input, boost inductor L, Series LC Resonant Inverter, high step up Transformer, Voltage Doubler Circuit and a Resistive Load Ro. In this configuration the transformer Leakage Inductance Lk and capacitor C3 are in series forming Series LC Resonant configuration in which for 12 V dc input from Solar PV panel, the measured output voltage was 101V dc for Resistive load.
B. IB Parallel LC Resonant Converter
The Integrated Boost Parallel LC Resonant converter Fig 4 consists of Solar PV input, boost inductor L, Parallel LC Resonant Inverter, high step up Transformer, Voltage Doubler Circuit and a Resistive Load Ro. In this configuration the transformer Leakage Inductance Lk and capacitor C3 are in parallel combination forming Parallel LC Resonant configuration in which for 12 V dc input from Solar PV panel, the measured output voltage was 109 V dc for Resistive load.
C. IB LLC Resonant Converter
The Integrated Boost LLC Resonant converter Fig 5 consists of Solar PV input, boost inductor L, LLC Resonant Inverter, high step up Transformer, Voltage Doubler Circuit and a Resistive Load Ro. In this configuration the transformer Leakage Inductance Lk ,L2 and capacitor C3 are in parallel combination forming LLC Resonant configuration in which for 12 V dc input from Solar PV panel, the measured output voltage was 112 V dc for Resistive load.
D. IB LCC Resonant Converter
The Integrated Boost LCC Resonant converter Fig 6 consists of Solar PV input, boost inductor L, LCC Resonant Inverter, high step up Transformer, Voltage Doubler Circuit and a Resistive Load Ro. In this configuration the transformer Leakage Inductance Lk ,and capacitor C3,C4 are in parallel combination forming LCC Resonant configuration in which for 12 V dc input from Solar PV panel, the measured output voltage was 121 V dc for Resistive load.

DESIGN OF PROPOSED CONVERTERS
A. Duty Cycle
equation

SIMULATION RESULTS AND DISCUSSION
The comparative analyses of different types of IBR Converter are simulated using MATLAB/SIMULINK Model which is discussed here. Table 1 shows the different types of IBR Converters and its corresponding input voltage and output voltage. On this comparative table it clearly shows that the Integrated Boost LCC Resonant Converter does the maximum step up voltage of 121 V yielding high Efficiency.
The Simulink model of the Integrated Boost LCC Resonant Converter as shown in Fig.7 which gives the maximum output voltage for 12V dc input from solar panel, giving maximum Efficiency. The solar PV Equivalent Circuit as shown in the Fig.8 is used in the simulation .The output step up voltage of 121V dc is obtained as shown in Fig.9.
The comparison graph showing the rise in the output voltage and output Efficiency for different IBR converter configurations are shown in Fig.10 and 11.For the Integrated Boost LCC Resonant converter the maximum dc output voltage was obtained.

CONCLUSION
This paper does a comparative study of different types of IBR Converters for which the best performance was obtained for the Integrated Boost LCC Resonant Converter, giving high step up output voltage and high Efficiency for Resistive loads. The best performance IB LCC Resonant converter Simulink model and results are shown in the paper.
 

Tables at a glance
Table icon
Table 1
 

Figures at a glance
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Figure 11
 

References