Rushali Thakkar - Academia.edu (original) (raw)
Papers by Rushali Thakkar
Energy Storage Devices [Working Title], 2021
Modelling helps us to understand the battery behaviour that will help to improve the system perfo... more Modelling helps us to understand the battery behaviour that will help to improve the system performance and increase the system efficiency. Battery can be modelled to describe the V-I Characteristics, charging status and battery’s capacity. It is therefore necessary to create an exact electrical equivalent model that will help to determine the battery efficiency. There are different electrical models which will be discussed and examined along with the benefits and demerits. A systematic comparison and analysis using simulation will help us to select an ideal model which will suit best to a specific application.
2021 IEEE 18th India Council International Conference (INDICON), 2021
In high-power battery applications, rechargeable batteries play a significant role. To satisfy th... more In high-power battery applications, rechargeable batteries play a significant role. To satisfy the requirements of energy and power it is necessary to build a battery pack with numerous cells connected in either series or parallel combination. Each battery has slightly different capacity due to the manufacturing tolerances, environmental conditions, chemical and electrical characteristics of individual cells, such as open circuit voltage (OCV), internal impedance across cells, battery charge and discharge rate and external temperature gradients in a typical pack. After multiple charging and discharge cycles, the battery cells or modules appear to get out of balance in terms of uneven voltage across the pack. The variation in voltage appears to increase over period as some batteries charge and discharge faster and others charge and discharge more slowly. This greatly decreases the available battery pack capacity and also contributes to premature cell failure. Hence for series connected battery packs, balancing is required to maximise the operating range, increase life of battery, enhance battery protection, performance and reliability. This paper explains about different architectures used for balancing of cells along with the comparative analysis. Simulation results for passive balancing with switched shunting resistor and active balancing using flyback converter circuit is discussed.
2020 IEEE Pune Section International Conference (PuneCon), 2020
Electrical equivalent circuit models of battery helps us to understand the behavior in terms of i... more Electrical equivalent circuit models of battery helps us to understand the behavior in terms of its electrical characteristics, charging status and battery capacity to improve the system performance and increase the overall efficiency. In this paper different models of lithium-ion battery are discussed and their performance analysis is studied along with the benefits and demerits which will help us to select an ideal model which will suit best to a power electronics application. It is also observed that accurate electrical equivalent model is best suited for power applications as it takes into account the battery life time in its model. Charging and discharging characteristics of an ideal lithium-ion battery model are plotted using matlab to match the performance with the battery model specifications of lithium ion battery.
SSRN Electronic Journal, 2022
Energy Storage Devices [Working Title], 2021
Modelling helps us to understand the battery behaviour that will help to improve the system perfo... more Modelling helps us to understand the battery behaviour that will help to improve the system performance and increase the system efficiency. Battery can be modelled to describe the V-I Characteristics, charging status and battery’s capacity. It is therefore necessary to create an exact electrical equivalent model that will help to determine the battery efficiency. There are different electrical models which will be discussed and examined along with the benefits and demerits. A systematic comparison and analysis using simulation will help us to select an ideal model which will suit best to a specific application.
2021 IEEE 18th India Council International Conference (INDICON), 2021
In high-power battery applications, rechargeable batteries play a significant role. To satisfy th... more In high-power battery applications, rechargeable batteries play a significant role. To satisfy the requirements of energy and power it is necessary to build a battery pack with numerous cells connected in either series or parallel combination. Each battery has slightly different capacity due to the manufacturing tolerances, environmental conditions, chemical and electrical characteristics of individual cells, such as open circuit voltage (OCV), internal impedance across cells, battery charge and discharge rate and external temperature gradients in a typical pack. After multiple charging and discharge cycles, the battery cells or modules appear to get out of balance in terms of uneven voltage across the pack. The variation in voltage appears to increase over period as some batteries charge and discharge faster and others charge and discharge more slowly. This greatly decreases the available battery pack capacity and also contributes to premature cell failure. Hence for series connected battery packs, balancing is required to maximise the operating range, increase life of battery, enhance battery protection, performance and reliability. This paper explains about different architectures used for balancing of cells along with the comparative analysis. Simulation results for passive balancing with switched shunting resistor and active balancing using flyback converter circuit is discussed.
2020 IEEE Pune Section International Conference (PuneCon), 2020
Electrical equivalent circuit models of battery helps us to understand the behavior in terms of i... more Electrical equivalent circuit models of battery helps us to understand the behavior in terms of its electrical characteristics, charging status and battery capacity to improve the system performance and increase the overall efficiency. In this paper different models of lithium-ion battery are discussed and their performance analysis is studied along with the benefits and demerits which will help us to select an ideal model which will suit best to a power electronics application. It is also observed that accurate electrical equivalent model is best suited for power applications as it takes into account the battery life time in its model. Charging and discharging characteristics of an ideal lithium-ion battery model are plotted using matlab to match the performance with the battery model specifications of lithium ion battery.
SSRN Electronic Journal, 2022