Ajit A. Ghodke
Ajit A. Ghodke has a total of 6 co-authors. Here are the top co-authors by number of shared publications:
- Kishore Chatterjee
Department of Electrical Engineering, Indian Institute of Technology Bombay, Mumbai, India
1 shared publication - Mahajan Sagar Bhaskar
Prince Sultan University
1 shared publication - Raju Kannadasan
Department of Electrical and Electronics Engineering Sri Venkateswara College of Engineering Sriperumbudur India
1 shared publication - Rajvikram Madurai Elavarasan
School of Engineering and Energy, College of Science, Technology, Engineering & Mathematics, Murdoch University, Perth, WA 6150, Australia
1 shared publication - Swaminathan Ganesan
Schneider Electric Pvt. Ltd., Bengaluru, 560067, India
1 shared publication - Umashankar Subramaniam
Prince Sultan University
1 shared publication
Latest Publications
- Open Access
- 13 October 2020
- Published by Institute of Electrical and Electronics Engineers (IEEE) in IEEE Access
- Vol. 8, 188861-188874
Investigation on Sizing of Voltage Source for a Battery Energy Storage System in Microgrid With Renewable Energy Sources
The foremost challenge in a microgrid with Distributed Energy Resources (DER) is of managing the intermittent nature of renewable energy sources. Therefore, the extent of integration of the Battery Energy Storage System (BESS) has increased recently in a microgrid due to its versatility, high energy density, and efficiency. Generally, BESS is a grid-tied system and has fast power adjustment capability. Controversially, during the stand-alone mode, it cannot operate in the absence of a local Voltage Source (VS) which acts as a voltage and frequency reference in the network. To ensure the reliable operation of a microgrid during utility grid outage or non-availability of intermittent Renewable Energy Sources (RES), it is significant to operate the BESS with the local VS to dispatch the stored energy. This paper discusses the analytical methodology that can be adopted for identifying the most suitable rating of the VS which can act as a voltage and frequency reference for the BESS using Matlab/ Simulink. Further, a simulation was carried out against various load characteristics and it is observed that an Uninterruptible Power Supply (UPS) with a kVA capacity of 35-45% of that of the BESS with an overload capacity of 150-200% can be chosen as a feasible choice to act as the VS.
- 13 October 2020
- Published by Institute of Electrical and Electronics Engineers (IEEE) in IEEE Access
- Vol. 8, 188861-188874
Open AccessInvestigation on Sizing of Voltage Source for a Battery Energy Storage System in Microgrid With Renewable Energy Sources
The foremost challenge in a microgrid with Distributed Energy Resources (DER) is of managing the intermittent nature of renewable energy sources. Therefore, the extent of integration of the Battery Energy Storage System (BESS) has increased recently in a microgrid due to its versatility, high energy density, and efficiency. Generally, BESS is a grid-tied system and has fast power adjustment capability. Controversially, during the stand-alone mode, it cannot operate in the absence of a local Voltage Source (VS) which acts as a voltage and frequency reference in the network. To ensure the reliable operation of a microgrid during utility grid outage or non-availability of intermittent Renewable Energy Sources (RES), it is significant to operate the BESS with the local VS to dispatch the stored energy. This paper discusses the analytical methodology that can be adopted for identifying the most suitable rating of the VS which can act as a voltage and frequency reference for the BESS using Matlab/ Simulink. Further, a simulation was carried out against various load characteristics and it is observed that an Uninterruptible Power Supply (UPS) with a kVA capacity of 35-45% of that of the BESS with an overload capacity of 150-200% can be chosen as a feasible choice to act as the VS.
- Open Access
- 1 August 2014
- Published by Institution of Engineering and Technology (IET) in IET Power Electronics
- Vol. 7 (8) , 2161-2172
Three‐phase three‐level one‐cycle controlled bidirectional ac–dc neutral‐point‐clamped converter without having voltage sensors
A three‐phase three‐level bidirectional ac–dc neutral‐point‐clamped converter (3 L‐NPC) based on one‐cycle control (OCC) is proposed in this study. It ensures that the 3 L‐NPC converter operates stably during inverting mode of operation. A neutral point potential regulator is also presented which adds a dc offset to the three‐phase modulating signals to nullify the deviation in the neutral point potential. First, a one‐cycle controlled (OCC) 3 L‐NPC converter which requires the sensing of instantaneous phase voltages of the utility is presented. Subsequently, a modified version of the OCC‐based 3 L‐NPC converter which does not requires sensing of the instantaneous phase voltages is proposed. The modified OCC‐based 3 L‐NPC estimates instantaneous phase voltages of the source from the pulse width modulation (PWM) switching sequence of the converter. The viability of the schemes is confirmed through a detailed simulation and experimental studies.
- 1 August 2014
- Published by Institution of Engineering and Technology (IET) in IET Power Electronics
- Vol. 7 (8) , 2161-2172
Open AccessThree‐phase three‐level one‐cycle controlled bidirectional ac–dc neutral‐point‐clamped converter without having voltage sensors
A three‐phase three‐level bidirectional ac–dc neutral‐point‐clamped converter (3 L‐NPC) based on one‐cycle control (OCC) is proposed in this study. It ensures that the 3 L‐NPC converter operates stably during inverting mode of operation. A neutral point potential regulator is also presented which adds a dc offset to the three‐phase modulating signals to nullify the deviation in the neutral point potential. First, a one‐cycle controlled (OCC) 3 L‐NPC converter which requires the sensing of instantaneous phase voltages of the utility is presented. Subsequently, a modified version of the OCC‐based 3 L‐NPC converter which does not requires sensing of the instantaneous phase voltages is proposed. The modified OCC‐based 3 L‐NPC estimates instantaneous phase voltages of the source from the pulse width modulation (PWM) switching sequence of the converter. The viability of the schemes is confirmed through a detailed simulation and experimental studies.