ADITI SUSHIL KARVEKAR

Dr. Mrs. A. S. Karvekar completed B. Tech in Electrical Engineering in May 2012. After her graduation, she immediately enrolled for M. Tech Control Systems course in WCE, Sangli.
She completed her post-graduation in August 2014. She then joined SBGI, Miraj as assistant professor and taught subjects like Electrical Technology, Control System Engineering,
Signals and Systems and HVDC. In July 2016, she joined WCE, Sangli as assistant professor and is working till date in the dept. of electrical engg, WCE, Sangli. She has an experience
of teaching subjects like Power Electronics, Control System Engineering at undergraduate level and Advanced Digital Signal Processing, Non-Linear Dynamical Systems, Applied
Digital Control, Adaptive Control Systems at post graduate level. She has completed PhD in Electrical Engineering in April 2024 under the guidance of Prof. Dr. P. M. Joshi. The area of her PhD research work is Control of Electric Power Systems for More Electric Aircraft.

EDUCATION

B. Tech Electrical Engineering (2012)
M. Tech Electrical Control Systems (2014)
Ph.D Electrical Engineering (2024)

RESEARCH, TEACHING, or OTHER INTERESTS

Engineering, Electrical and Electronic Engineering, Control and Systems Engineering

Scopus Publications

Energy Management System for a Multi-Source Electric Power System Architecture in More Electric Aircraft
Aditi Karvekar, Sushil Karvekar
Fuel Cells, 2025
This research paper intends to present a detailed design of electric power system architecture of half‐ and full‐span of an aircraft and the energy management system in aircraft EPS to operate fuel cells, battery stacks, and supercapacitors at appropriate times. A fuel cell of appropriate power rating is used as APU for the AC bus in the aircraft in conjunction with a supercapacitor. A battery stack is connected to the DC bus through a bidirectional DC to DC converter which acts as APU for the low‐power high‐priority DC loads with faster dynamic response and caters to the power needs of these loads under emergency conditions. The battery keeps getting charged from fuel cell under normal operating conditions. The system response is analyzed over a flight cycle with randomly changing load under normal and emergency conditions. The research is intended to use the best qualities of fuel cells, battery stack, and supercapacitors for the role of the APU in an aircraft. All three of them at proper power ratings are implemented and an energy management system is developed to use fuel cell for major loads, supercapacitor for sudden load changes, and battery stacks for minor load changes.
Simulation Modeling for Comparative Analysis of SPWM and SVPWM in Solar PV Inverters
Sushil Karvekar, Aditi Karvekar
Proceedings 2025 4th International Conference on Computational Modelling Simulation and Optimization Iccmso 2025, 2025
The performance of space vector pulse width modulation (SVPWM) and sinusoidal pulse width modulation (SPWM) techniques for solar photovoltaic (PV) inverters is compared in this study with an emphasis on power consumption, harmonic distortion, and efficiency. Using simulation and hardware implementation, the investigation shows that SVPWM performs better than SPWM. Improved DC bus voltage utilization, decreased overall harmonic distortion, and enhanced inverter efficiency with SVPWM are some of the main conclusions. Software simulations were used in the study, and their validity was confirmed by hardware implementation. A 125 kW rooftop solar PV system at Walchand College of Engineering, Sangli, was used to test and confirm the hardware results. SVPWM is recommended for highperformance solar PV systems because it can lower switching losses and increase system efficiency, while SPWM is still practical for low-power, cost-sensitive applications. The study comes to the conclusion that SVPWM-based control schemes can greatly improve the performance of solar PV inverters, especially in residential and commercial PV installations. This emphasizes how crucial advanced PWM techniques are to the optimization of renewable energy systems.
Implementation of AVR Systems with Comparative Analysis of PID Controller using Fuzzy Logic and PSO Algorithms
Sushil Karvekar, Aditi Karvekar, Vijay Mohale
5th IEEE International Conference on Sustainable Energy and Future Electric Transportation Sefet 2025, 2025
Automatic Voltage Regulator (AVR) systems are essential for maintaining a steady voltage output in synchronous generators by adjusting excitation levels. However, due to system delays and high inductance in the generator’s field winding, voltage oscillations can persist, affecting system stability. This paper compares two control strategies—Fuzzy Logic Control (FLC) and a PID controller optimized using Particle Swarm Optimization (PSO)—to improve AVR performance. Fuzzy Logic Controllers rely on human-like reasoning, making them adaptable for complex systems without needing a precise mathematical model. In contrast, PID controllers are widely used for their stability and reliability but require proper tuning for optimal performance. The PSO algorithm is used to fine-tune the PID controller, ensuring faster response, better stability, and improved control accuracy. A Sliding Mode Controller is designed to control the AVR voltage under load variation conditions and the performance of the SMC is compared with those of Fuzzy PID and PSO PID. The real time transfer functions for AVR system components are taken from the data received from the AVR system deployed at Chandoli dam in Maharashtra. Simulations in MATLAB/Simulink and real-time testing on dSPACE 1104 demonstrate that the PSO-tuned PID controller significantly reduces oscillations and improves system performance compared to the fuzzy logic approach. However the SMC proves to be the best choice in terms of transient response parameters such as peak overshoot and settling time. The results confirm that Sliding Mode Control is more effective in maintaining stable voltage under varying load conditions, making it a superior choice for AVR systems.
Implementation and performance analysis of a novel sliding mode controller for bidirectional DC to DC converter in aircraft application
Aditi Sushil Karvekar, Prasad Joshi
World Journal of Engineering, 2024
Purpose The purpose of this paper is to implement a closed loop regulated bidirectional DC to DC converter for an application in the electric power system of more electric aircraft. To provide a consistent power supply to all of the electronic loads in an aircraft at the desired voltage level, good efficiency and desired transient and steady-state response, a smart and affordable DC to DC converter architecture in closed loop mode is being designed and implemented. Design/methodology/approach The aircraft electric power system (EPS) uses a bidirectional half-bridge DC to DC converter to facilitate the electric power flow from the primary power source – an AC generator installed on the aircraft engine’s shaft – to the load as well as from the secondary power source – a lithium ion battery – to the load. Rechargeable lithium ion batteries are used because they allow the primary power source to continue recharging them whenever the aircraft engine is running smoothly and because, in the event that the aircraft engine becomes overloaded during takeoff or turbulence, the charged secondary power source can step in and supply the load. Findings A novel nonsingular terminal sliding mode voltage controller based on exponential reaching law is used to keep the load voltage constant under any of the aforementioned circumstances, and its performance is contrasted with a tuned PI controller on the basis of their respective transient and steady-state responses. The former gives a faster and better transient and steady-state response as compared to the latter. Originality/value This research gives a novel control scheme for incorporating an auxiliary power source, i.e. rechargeable battery, in more electric aircraft EPS. The battery is so implemented that it can get regeneratively charged when primary power supply is capable of handling an additional load, i.e. the battery. The charging and discharging of the battery is carried out in closed loop mode to ensure constant battery terminal voltage, constant battery current and constant load voltage as per the requirement. A novel sliding mode controller is used to improve transient and steady-state response of the system.
Modified Active Bridge Converter for Voltage Control of Electronic Load in More Electric Aircraft
Aditi Karvekar, Prasad Joshi
Ssrg International Journal of Electrical and Electronics Engineering, 2023
This paper proposes and implements a modified bridge converter to feed various AC and DC electronic loads in an aircraft. The emerging More Electric Aircraft and All Electric Aircraft trend have given rise to the need for novel power electronic circuits which should be capable of handling multiple avionic system loads- both AC as well as DC and also should be versatile and flexible enough to provide output voltage control to facilitate the desired operation of the connected loads. In this paper, a simplified active bridge converter circuit is proposed, simulated and implemented, which can be used to feed the electric power to the electronic systems inside an aircraft at variable voltage. The circuit uses a PWM inverter in conjunction with a rectifier and is capable of feeding power to AC and DC loads at various stages of the circuit. The prototype of the proposed circuit is also implemented. It is tested by connecting one AC and one DC load, and the output voltages are varied by changing the modulation index of the PWM inverter control circuit. The implementation is Hardware In Loop type, where the control circuit is implemented in MATLAB/Simulink, and PICCOLO Launchpad provides the interface between MATLAB and the hardware of the power circuit. The simulation and hardware results are compared for various values of modulation indices, and the future scope to modify this circuit into a bidirectional converter to improve the system efficiency is discussed.
A Simplified Approach to Closed Loop Control of A Non-Isolated Bidirectional DC To DC Converter
Aditi Karvekar, Prasad Joshi
2022 2nd International Conference on Intelligent Technologies Conit 2022, 2022
This paper aims at implementing a smart., light weight and economical DC to DC converter topology in closed loop mode in order to design an uninterrupted power supply to the electronic and auxiliary loads in a More Electric Aircraft with high efficiency and good transient and steady state response. The proposed topology uses a non-isolated cascaded bidirectional DC to DC converter which can be used in buck as well as boost mode. The aircraft load which is to be supplied with DC power is so connected that it can take power from AC generator mounted on the engine shaft as well as from an auxiliary battery which gets connected to the load in case the engine gets overloaded due to takeoff., landing or turbulence conditions. The changeover between these two sources happens automatically and appropriate gate signals are provided to the semiconductor switches in the DC to DC converter with the help of closed loop control consisting of PI voltage controller hysteresis current controller. The system performance is tested under randomly varying load conditions and the load voltage and current waveforms are compared against their respective reference values. The system transient response is evaluated in terms of overshoot and voltage regulation across the load. PI controllers can be replaced with more advanced controllers like sliding mode controller or fuzzy controller in order to get even better system response in terms of load current overshoot under changing load conditions.
A sliding mode controller with cascaded control technique for DC to DC boost converter
Aditi Kumbhojkar, Nitinkumar Patel
2014 International Conference on Circuits Power and Computing Technologies Iccpct 2014, 2014
In this paper, the Sliding Mode Controller cascaded with PI voltage controller for DC to DC Boost converter is discussed. General design issues of Sliding Mode Controller for boost converter are discussed and the need of cascade controller is established. The cascade control consists of voltage controller which is a PI controller and non-singular terminal sliding mode controller. The performance of conventional PI controller and non-singular terminal sliding mode controller for current control is tested for reference disturbance, line disturbance and load disturbance conditions. The simulations for above conditions are carried out in MATLAB/Simulink environment. The simulation results are presented to validate the effectiveness of proposed system.
A novel sliding mode control technique for DC to DC buck converter
Aditi Kumbhojkar, Nitinkumar Patel, Anant Kumbhojkar
2014 International Conference on Circuits Power and Computing Technologies Iccpct 2014, 2014
In this paper, the Sliding Mode Controller for DC to DC converter is discussed. The performance of conventional PI controller and non-singular terminal sliding mode controller is tested for reference disturbance, line disturbance and load disturbance conditions. Mathematical model of DC to DC Buck converter is derived and the simulations for above discussed conditions are carried out in MATLAB/Simulink environment. It is observed that the response time, transient response and the time of convergence of Sliding Mode Controller is superior to that of the PI controller.
Comparison of different methods of reference current generation for shunt active power filter under balanced and unbalanced load conditions
Sushil Karvekar, Aditi Kumbhojkar
Proceedings of IEEE International Conference on Circuit Power and Computing Technologies Iccpct 2013, 2013
In this paper a comparison of three different control strategies for reference current generation in shunt active power filter is considered. The study involves two methods in time domain and one method in frequency domain. The three techniques studied are Instantaneous Reactive Power Theory (pq), Synchronous Reference Frame theory (SRF) and Discrete Fourier Transform Algorithm (DFT). The evaluation of these methods is done under three phase balanced and unbalanced non-linear load conditions. Also the dynamic performance of these methods is evaluated. The results are evaluated and compared using MATLAB/Simulink.

RECENT SCHOLAR PUBLICATIONS

Energy Management System for a Multi‐Source Electric Power System Architecture in More Electric Aircraft
A Karvekar, S Karvekar
Fuel Cells 25 (5), e70019 , 2025
2025.0
Implementation of AVR Systems with Comparative Analysis of PID Controller using Fuzzy Logic and PSO Algorithms
S Karvekar, A Karvekar, V Mohale
2025 IEEE 5th International Conference on Sustainable Energy and Future … , 2025
2025.0
Simulation Modeling for Comparative Analysis of SPWM and SVPWM in Solar PV Inverters
S Karvekar, A Karvekar
2025 4th International Conference on Computational Modelling, Simulation and … , 2025
2025.0
Implementation and performance analysis of a novel sliding mode controller for bidirectional DC to DC converter in aircraft application
AS Karvekar, P Joshi
World Journal of Engineering 21 (3), 510-521 , 2024
2024.0
Citations: 1
A Simplified Approach to Closed Loop Control of A Non-Isolated Bidirectional DC To DC Converter
A Karvekar, P Joshi
2022 2nd International Conference on Intelligent Technologies (CONIT), 1-5 , 2022
2022.0
Recent Technologies and Control Methods for Electric Power Systems in More Electric Aircrafts: A Review
A Karvekar
ADBU Journal of Engineering Technology 10 (2) , 2021
2021.0
A review on DC microgrid and decentralized approach
M Abdare, A Karvekar
Int J Res Appl Sci Eng Technol 9 (8), 1719-1723 , 2021
2021.0
Citations: 1
Comparison of different methods of reference current generation for shunt active power filter under balanced and unbalanced load conditions
S Karvekar, A Kumbhojkar
2013 International Conference on Circuits, Power and Computing Technologies … , 2013
2013.0
Citations: 8
Modified Active Bridge Converter for Voltage Control of Electronic Load in More Electric Aircraft
A Karvekar, P Joshi

MOST CITED SCHOLAR PUBLICATIONS

Comparison of different methods of reference current generation for shunt active power filter under balanced and unbalanced load conditions
S Karvekar, A Kumbhojkar
2013 International Conference on Circuits, Power and Computing Technologies … , 2013
2013.0
Citations: 8
Implementation and performance analysis of a novel sliding mode controller for bidirectional DC to DC converter in aircraft application
AS Karvekar, P Joshi
World Journal of Engineering 21 (3), 510-521 , 2024
2024.0
Citations: 1
A review on DC microgrid and decentralized approach
M Abdare, A Karvekar
Int J Res Appl Sci Eng Technol 9 (8), 1719-1723 , 2021
2021.0
Citations: 1
Energy Management System for a Multi‐Source Electric Power System Architecture in More Electric Aircraft
A Karvekar, S Karvekar
Fuel Cells 25 (5), e70019 , 2025
2025.0
Implementation of AVR Systems with Comparative Analysis of PID Controller using Fuzzy Logic and PSO Algorithms
S Karvekar, A Karvekar, V Mohale
2025 IEEE 5th International Conference on Sustainable Energy and Future … , 2025
2025.0
Simulation Modeling for Comparative Analysis of SPWM and SVPWM in Solar PV Inverters
S Karvekar, A Karvekar
2025 4th International Conference on Computational Modelling, Simulation and … , 2025
2025.0
A Simplified Approach to Closed Loop Control of A Non-Isolated Bidirectional DC To DC Converter
A Karvekar, P Joshi
2022 2nd International Conference on Intelligent Technologies (CONIT), 1-5 , 2022
2022.0
Recent Technologies and Control Methods for Electric Power Systems in More Electric Aircrafts: A Review
A Karvekar
ADBU Journal of Engineering Technology 10 (2) , 2021
2021.0
Modified Active Bridge Converter for Voltage Control of Electronic Load in More Electric Aircraft
A Karvekar, P Joshi