Analysis of Decoupler Controlled Three Input Multiport Boost Converter for Hybrid Electric Vehicle 15th International Conference on Advances in Computing Control and Telecommunication Technologies Act 2024, 2024
High Gain Multiport Boost Converter for Hybrid Renewable Energy Systems Saritha Paramel, Devi V, Ajay Babu International Conference on Advancements in Power Communication and Intelligent Systems Apci 2024, 2024 In the current situation, facilitating the incorporation of renewable energy is imperative. A single renewable source is not enough to make any system work for more time. This paper focuses on addressing these challenges to adopt hybrid renewable energy sources by proposing a high gain multiport boost converter tailored for hybrid renewable energy sources. The paper details the mathematical modelling of a multiport boost converter, with solar cells and FC stack. The closed loop output voltage of the multiport boost converter is regulated with the decoupler controller for different load variations. The model undergoes simulation to verify its performance and efficiency.
Design and analysis of multiple input single output converter for hybrid renewable energy system with energy storage capability P. Saritha, V. Devi, Ajay Babu, R.P. Praveen Ain Shams Engineering Journal, 2023 This paper proposes the design and analysis of a multiple-input-single-output (MISO) DC-DC converter suitable for a hybrid renewable energy system with energy storage capability. The converter design and control strategy validated in this research can be used to regulate the output dc voltage obtained from multiple-source renewable energy systems. The design is realized using a non-isolated double boost converter as it can handle bidirectional power flow at the storage port and has other advantages like compact structure, reduced number of components, and double boosting capability. The converter can also work without transformers, enabling the input renewable energy sources to operate individually. An inverted decoupler control strategy is adopted in the design of this novel converter. Mathematical models were developed to obtain the decoupler matrix, and the proposed control strategy is utilized to analyze the output. Simulations were performed on MISO converters with load and reference variations and is validated with the prototype. The current ripple percentage at the dual source side is found to be reduced by 2.6%. Also, the rise time, settling time, and percent overshoot of the output voltage were reduced by 0.03 s, 45 ms, and 3.6%, respectively. The performance of the proposed MISO converter is validated on a 50 W hardware prototype. The results validate the MISO converter's superior dynamic performance, output voltage regulation and reduced dual source ripple current, all of which are in agreement to the results of the simulation. A comprehensive comparison with the traditional controller is also conducted to further illustrate the advantages of the proposed inverted decoupler. The inverted decoupler validated in this work can be effectively used in hybrid renewable energy systems with energy storage capability, as it is found to be immune to the disturbances from the source end.
A Review on Decouplers in Miso Converters for Hybrid Electric Vehicles Application P Saritha, V Devi, Ajay Babu 2021 International Conference on Nascent Technologies in Engineering Icnet 2021 Proceedings, 2021 A new era is emerging in the field of transportation with an electric vehicle. Due to the inadequate infrastructure of charging issues Hybrid Electric Vehicle is the researchers' interested field nowadays. While considering the Hybrid Electric Vehicles the multiple input converters are the heart of the system. To improve fuel efficiency and maintain battery performance of the HEVs control part in converters has a significant role. This paper gives an introduction to the various multiple input converters used in HEVs. This paper explains the need for decoupler instead of using traditional controllers and a comparison of traditional controllers like PI/PID controllers with decoupler controllers is elucidated. A comprehensive review of the decoupler with their structure and a theoretical analysis on better transient performance compared to the available controllers is included. This paper proposes a dynamic decoupler for the converters to improve battery performance and regulated output.
Energy and fuel efficient parallel mild hybrids for urban roads Ajay Babu, S. Ashok Energy Conversion and Management, 2016 Fuel economy improvements and battery energy savings can promote the adoption of parallel mild hybrids for urban driving conditions. The aim of this study is to establish these benefits through two operating modes: an energy saving mode and a fuel saving mode. The performances of a typical parallel mild hybrid using these modes were analysed over urban driving cycles, in the US, Europe, and India, with a particular focus on the Indian urban conditions. The energy pack available from the proposed energy-saving operating mode, in addition to the energy already available from the conventional mode, was observed to be the highest for the representative urban driving cycle of the US. The extra energy pack available was found to be approximately 21.9 times that available from the conventional mode. By employing the proposed fuel saving operating mode, the fuel economy improvement achievable in New York City was observed to be approximately 22.69% of the fuel economy with the conventional strategy. The energy saving strategy was found to possess the lowest payback periods and highest immunity to variations in various cost parameters.
Parallel mild hybrid equivalent to the Tata Safari Ajay Babu, S. Ashok Proceedings of IEEE International Conference on Technological Advancements in Power and Energy Tap Energy 2015, 2015 The vehicle range provided by a fully charged battery module in any electric vehicle is no match to the range provided by the internal combustion engine driven vehicles with full tank gasoline or diesel. This limitation of electric vehicles paved way for the evolution of hybrid electric vehicles. Among the various known architectures for hybrid electric vehicles, the parallel mild hybrid is expected to be the right candidate to be introduced in a developing country. This is because the size of the electric powertrain in such vehicles shall be relatively smaller compared to the other vehicle architectures and hence shall be less costly compared to the electric vehicle or other hybrid electric vehicle configurations. This paper aims at explaining the procedure of deriving a parallel mild hybrid vehicle equivalent to Tata Safari, a passenger vehicle already available in Indian market. The paper also compares the performance specifications of both vehicles and determines the losses in the proposed vehicle during the normal cruising mode and regenerative modes while traversing a typical Indian urban driving cycle and an Indian highway driving cycle.
Suitability of T source inverter based vector controlled drive for parallel mild hybrids Ajay Babu, S. Ashok 2015 IEEE International Conference on Signal Processing Informatics Communication and Energy Systems Spices 2015, 2015 Voltage source inverter based drives are known to be smaller, reliable, and efficient and have relatively fewer issues than current source inverter based drives. However, in recent times impedance source inverters appear to be a promising candidate for these applications, as they carry the advantages of both voltage source inverters and current source inverters. This paper presents the performance of a T source inverter based vector controlled drive in a parallel mild hybrid vehicle. A T Source Inverter is a type of impedance source inverter with fewer passive elements. The performance of the drive is validated through a typical driving pattern which is most likely to be experienced by parallel hybrids utilizing electric power-assist strategy. The performance of this drive is also compared with a voltage source inverter based vector controlled drive for 22 seconds of a typical Indian urban driving cycle. The results of these analyses along with the performance of the proposed drive on initial parts of typical urban driving cycles in the US and Europe, helps in confirming the suitability of T source inverter based drives in these vehicles.
Improved parallel mild hybrids for urban roads Ajay Babu, S. Ashok Applied Energy, 2015 The major challenge to the large-scale commercialisation of hybrid electric vehicles is their high initial and operating costs, although a mild hybrid is generally cheaper than a full hybrid of the same performance. Hence, the average operating efficiency of the internal combustion engine of a parallel hybrid and the energy saved by its battery modules when running on urban roads have been key research subjects. In this paper, a method for maximising the performance of heavyweight hybrid vehicles is proposed. Because the manipulation of the thresholds of the state of charge window of the battery of a parallel hybrid affects the performance of the vehicle when using the commonly employed electric power-assist strategy, we developed a method for determining the optimal sizes of the vehicle components that afford the most feasible operations using the conventional and modified power-assist strategies. Furthermore, the performances of the vehicle in both modes were analysed for various urban driving conditions representative of those encountered in the USA, Europe, and India. The results showed that energy saving in the battery pack after a typical urban driving cycle was higher in India than in the USA and Europe. The saving in India was determined to be 3.34%, whereas those in the USA and Europe were 3.13% and 0.23%, respectively. The energy savings in the battery pack of the same vehicle under identical conditions were determined using a simple internal resistance battery model and a resistance–capacitance battery model. The performance of a typical parallel mild hybrid capable of operating in the modified power-assist mode was also compared with that of an equivalent internal combustion engine vehicle presently on the Indian market.
Selection of vehicle configuration: Based on weight and performance constraints Ajay Babu, S. Ashok IEEE Transportation Electrification Conference and Expo Itec Asia Pacific 2014 Conference Proceedings, 2014 As part of the electrification of transportation sector, electric vehicles were the first to be developed, followed by the hybrid electric vehicles. The current study analyses the weights and performances of vehicles, with component sizes optimized to meet a common set of performance indexes. The battery pack in electric vehicles is observed to be 2-20 times heavier than the lightest vehicle of the same class. This paper finally presents a flowchart for general selection of vehicle configuration. The validity of the proposed algorithm is ascertained by analysing the performance and vehicle configurations of some vehicles already existing in the market.
High Gain Multiport Boost Converter for Hybrid Renewable Energy Systems S Paramel, V Devi, A Babu 2024 International Conference on Advancements in Power, Communication and … , 2024 2024.0
Enhancing speed–torque response and efficiency of Modern Utility Hybrid Renewable Energy Vehicles (MUHREVs) through inverted decoupler control strategy S Paramel, D Vadkkeveedu, A Babu Electrical Engineering, 1-16 , 2024 2024.0 Citations: 1
Design and analysis of multiple input single output converter for hybrid renewable energy system with energy storage capability P Saritha, V Devi, A Babu, RP Praveen Ain Shams Engineering Journal 14 (10), 102194 , 2023 2023.0 Citations: 18
A Review on Decouplers in Miso Converters for Hybrid Electric Vehicles Application P Saritha, V Devi, A Babu 2021 4th Biennial International Conference on Nascent Technologies in … , 2021 2021.0
Energy and fuel efficient parallel mild hybrids for urban roads A Babu, S Ashok Energy Conversion and Management 121, 305-320 , 2016 2016.0 Citations: 17
Parallel mild hybrid equivalent to the Tata Safari A Babu, S Ashok 2015 International Conference on Technological Advancements in Power and … , 2015 2015.0 Citations: 6
Improved parallel mild hybrids for urban roads A Babu, S Ashok Applied Energy 144, 276-283 , 2015 2015.0 Citations: 13
Suitability of T source inverter based vector controlled drive for parallel mild hybrids A Babu, S Ashok 2015 IEEE International Conference on Signal Processing, Informatics … , 2015 2015.0 Citations: 4
Comparison of T source inverter and voltage source inverter based drives for parallel hybrids A Babu, S Ashok 2014 International Conference on Advances in Green Energy (ICAGE), 138-143 , 2014 2014.0 Citations: 2
Selection of vehicle configuration: Based on weight and performance constraints A Babu, S Ashok 2014 IEEE Conference and Expo Transportation Electrification Asia-Pacific … , 2014 2014.0 Citations: 3
A novel index for batteries in Hybrid Electric Vehicles A Babu, S Ashok 2014 POWER AND ENERGY SYSTEMS: TOWARDS SUSTAINABLE ENERGY, 1-5 , 2014 2014.0 Citations: 3
Algorithm for selection of motor and vehicle architecture for a Plug-in Hybrid Electric Vehicle A Babu, S Ashok India Conference (INDICON), 2012 Annual IEEE, 875-878 , 2012 2012.0 Citations: 19
Comparison of battery technologies for hybrid electric and plug-in hybrid electric vehicles A Babu, S Ashok Trends Electr. Eng 2, 1-10 , 2012 2012.0 Citations: 9
Priliminary design considerations towards building of a hybrid electric bicycle A Babu, S Ashok, RS Kumar ISGT2011-India, 101-107 , 2011 2011.0 Citations: 3
Vehicle Configurations for Sports Utility Vehicles and Small Cars A Babu, S Ashok
MOST CITED SCHOLAR PUBLICATIONS
Algorithm for selection of motor and vehicle architecture for a Plug-in Hybrid Electric Vehicle A Babu, S Ashok India Conference (INDICON), 2012 Annual IEEE, 875-878 , 2012 2012.0 Citations: 19
Design and analysis of multiple input single output converter for hybrid renewable energy system with energy storage capability P Saritha, V Devi, A Babu, RP Praveen Ain Shams Engineering Journal 14 (10), 102194 , 2023 2023.0 Citations: 18
Energy and fuel efficient parallel mild hybrids for urban roads A Babu, S Ashok Energy Conversion and Management 121, 305-320 , 2016 2016.0 Citations: 17
Improved parallel mild hybrids for urban roads A Babu, S Ashok Applied Energy 144, 276-283 , 2015 2015.0 Citations: 13
Comparison of battery technologies for hybrid electric and plug-in hybrid electric vehicles A Babu, S Ashok Trends Electr. Eng 2, 1-10 , 2012 2012.0 Citations: 9
Parallel mild hybrid equivalent to the Tata Safari A Babu, S Ashok 2015 International Conference on Technological Advancements in Power and … , 2015 2015.0 Citations: 6
Suitability of T source inverter based vector controlled drive for parallel mild hybrids A Babu, S Ashok 2015 IEEE International Conference on Signal Processing, Informatics … , 2015 2015.0 Citations: 4
Selection of vehicle configuration: Based on weight and performance constraints A Babu, S Ashok 2014 IEEE Conference and Expo Transportation Electrification Asia-Pacific … , 2014 2014.0 Citations: 3
A novel index for batteries in Hybrid Electric Vehicles A Babu, S Ashok 2014 POWER AND ENERGY SYSTEMS: TOWARDS SUSTAINABLE ENERGY, 1-5 , 2014 2014.0 Citations: 3
Priliminary design considerations towards building of a hybrid electric bicycle A Babu, S Ashok, RS Kumar ISGT2011-India, 101-107 , 2011 2011.0 Citations: 3
Comparison of T source inverter and voltage source inverter based drives for parallel hybrids A Babu, S Ashok 2014 International Conference on Advances in Green Energy (ICAGE), 138-143 , 2014 2014.0 Citations: 2
Enhancing speed–torque response and efficiency of Modern Utility Hybrid Renewable Energy Vehicles (MUHREVs) through inverted decoupler control strategy S Paramel, D Vadkkeveedu, A Babu Electrical Engineering, 1-16 , 2024 2024.0 Citations: 1
High Gain Multiport Boost Converter for Hybrid Renewable Energy Systems S Paramel, V Devi, A Babu 2024 International Conference on Advancements in Power, Communication and … , 2024 2024.0
A Review on Decouplers in Miso Converters for Hybrid Electric Vehicles Application P Saritha, V Devi, A Babu 2021 4th Biennial International Conference on Nascent Technologies in … , 2021 2021.0
Vehicle Configurations for Sports Utility Vehicles and Small Cars A Babu, S Ashok
