Ambarnath Banerji | Meghnad Saha Institute Of Technology (original) (raw)

Papers by Ambarnath Banerji

International Journal of Power Electronics and Drive Systems (IJPEDS), 2011

Deregulation of the electric power energy market has thrown open opportunities for tapping the la... more Deregulation of the electric power energy market has thrown open opportunities for tapping the large number of small pockets of renewable energy sources with the asynchronous generators. Whether the power is supplied by asynchronous generator or by the grid at the remote location, its quality has become an important aspect for consumers of electricity. Efforts have been made to improve the power quality using passive filters, active filters and the new concept of Custom Power. Use of Custom power devices ensures that a load do not pollute the power supply of the other loads. One such custom power device is the DSTATCOM (Distribution Static Compensator) which is connected in shunt at the load end. The heart of the DSTATCOM is an inverter. The focus on the autonomous generation has increased in the recent years. The paper presents a comprehensive review of the DSTATCOM used for autonomous generation. It is aimed at providing a broad perspective on the status of DSTATCOM, used with Asynchronous generators, vis-à-vis its working principle, topology, supply system configurations, solid state switching devices and technology, control methodologies and approaches, application areas of DSTATCOM to researchers and application engineers dealing with power quality aspects of Autonomous Systems. Classified manner in which the references are presented in this paper will serve them as quick and useful reference.

2022 IEEE VLSI Device Circuit and System (VLSI DCS)

2022 IEEE VLSI Device Circuit and System (VLSI DCS)

2020 IEEE VLSI DEVICE CIRCUIT AND SYSTEM (VLSI DCS)

DSTATCOM is a shunt compensation device connected at Point of Common Coupling (PCC) of Distributi... more DSTATCOM is a shunt compensation device connected at Point of Common Coupling (PCC) of Distribution System to deliver quality power. The proportional & integral controller (PI) of DSTATCOM needs tuning at the time of installation as well as due to change of network parameters and working conditions, can provide a slower response. To ensure plug and play feature to the device with faster response Proportional Integral Derivative (PID) action with fuzzy interference system (FIS) is implemented in this paper. With respect to SRF theory based simple PI controller a better response is obtained with fuzzy PID controller in terms of dynamic voltage profile and Total Harmonic Distortion (THD).

Environmental Monitoring, 2022

Power generation technology has been evolving ever since Edison put up his first generating stati... more Power generation technology has been evolving ever since Edison put up his first generating station. It started with generation near the load center. To capitalize on the economics of scale large power plants were set up near the energy centers like the coal mine heads. This led to development of long distance transmission lines and the grids. Then came the restructuring of the rules and regulations governing the power system. With the issues of pollution and Global warming coming to the fore a paradigm shift is noticed in the generation of electrical power. Large number of renewable energy sources (RES) based small generators started getting connected to the distribution system. The concept of microgrid evolved to control and regulate the RES based generations. In order to effectively use these RES based generation and to capitalize from the electrical energy trading the concept of Virtual Power Plant and Community microgrid have started taking shape.

2016 21st Century Energy Needs - Materials, Systems and Applications (ICTFCEN), 2016

In recent years, the significance of distributed generation has increased rapidly in distribution... more In recent years, the significance of distributed generation has increased rapidly in distribution system. The prominent goal of DG placement is to measure the optimized location, type and sizes of DGs for getting best efficiency by maximizing or minimizing different constraints. This work investigates the recent research in the field of Swarm intelligence based optimal DG placement. Swarm intelligence is mainly categorized into Ant Colony Optimization & Particle Swarm Optimization. To get optimal solution, various researchers considers different constraints to get their solution. This article surveys those research works showing recent trends of Optimal DG Placement using Ant Colony Optimization & Particle Swarm Optimization.

2019 International Conference on Energy Management for Green Environment (UEMGREEN), 2019

Renewable energies like Photo Voltaic (PV)/ solar power are abundantly available and waiting to b... more Renewable energies like Photo Voltaic (PV)/ solar power are abundantly available and waiting to be harnessed. Being weak system renewable energy based power systems require reactive power generation close to load to unburden the source. Study reveals fixed tuned Proportional & Integral (PI) controller based DSTATCOM may not be able to provide satisfactory voltage regulation with wide load changes. DSTATCOM generally requires tuning of PI controllers by utility engineers during installation. This process is mostly trial and error approach. It is necessary to re-tune the DSTATCOM controller when there is change in operating condition. To ensure automatic control action irrespective of load conditions, soft-computing technique is implemented in the DSTATCOM. A supervised hybrid algorithm named Neuro- Fuzzy controller is adopted to ensure automatic adaptation of the controller parameters during changing load conditions. The paper presents a Synchronous Reference Frame theory (SRF) based DSTATCOM on MATLAB platform and uses a Neuro- Fuzzy inference system to get a better response in terms of dynamic voltage profile and Total Harmonic Distortion (THD) as compared to simple PI Controller.

2021 IEEE 18th India Council International Conference (INDICON), 2021

This paper proposes a decentralized secondary control scheme suitable for islanded microgrid cons... more This paper proposes a decentralized secondary control scheme suitable for islanded microgrid consist of multiple VF controlled inverters connected in parallel. The controller is based on proportional-integral control to maintain frequency and voltage under different load switching conditions. Moreover improved system performance and reliability are accomplished by managing proper power sharing among the participating inverters. Particle swam optimization is adapted to find best suitable gain parameters of the proportional-integral controller. Multiple simulation results of the islanded microgrid using MATLAB are discussed in detail to establish the above mentioned two main objectives of the paper i.e. maintaining frequency, voltage and balance load sharing among inverters.

2020 IEEE Calcutta Conference (CALCON), 2020

A paradigm shift to renewable energy based autonomous grids are being observed worldwide. The dc ... more A paradigm shift to renewable energy based autonomous grids are being observed worldwide. The dc autonomous systems are being explored in addition to the ac autonomous systems to provide power to many electronics appliances without going through rectification and filtering. This paper explores the possibilities of having a hybrid autonomous grid providing quality power to both ac and dc loads directly. An Induction Generators based ac grid is proposed whose requirement of reactive power under dynamic mode is met by a DSTATCOM. The dc bus of the DSTATCOM is supplied by a Solar PV source. The dc bus forms the dc grid and directly supplies the dc loads. The autonomous grid is simulated as a hybrid grid to supply both ac and dc power. The entire simulation is carried out on a MATLAB platform.

Michael Faraday IET International Summit 2015, 2015

Power blackouts are major catastrophic failures in large inter connected power systems. Risk of b... more Power blackouts are major catastrophic failures in large inter connected power systems. Risk of blackouts is more than expected and must be considered in the power system studies. In past, many power blackouts occurredworldwide. An attempt has been made to summarize those major blackouts with their effects. To resolve the risk factors identified by the researchers various methodologies were proposed. This paper surveys major blackouts, analyze the reasons behind them and report major prevention methodologies proposed by various authors and aim at providing a broad perspective on blackouts in power system to researchers and application engineers. Classified manner in which the references are presented will serve them as quick and useful reference.

2016 IEEE International Conference on Power Electronics, Drives and Energy Systems (PEDES), 2016

In this paper the conventional ‘Delta’ connected TCR bank is split into two identical ‘Delta’ ban... more In this paper the conventional ‘Delta’ connected TCR bank is split into two identical ‘Delta’ banks each having kVAr capacity half of the total TCR capacity. The study presented shows that such combination of two identical ‘Delta’ connected reactor banks, one with phase switching by thyristors and the other with line switching thyristor arrangement can effectively reduce the harmonic generation of TCR. Since both the three phase banks are connected in delta, the zero sequence triplen harmonics generated due to phase control of thyristors remain trapped inside the delta, thus reducing the harmonic injection into the power system. Further, some other major characteristic harmonics are also minimized in the TCR line current. Thus the new TCR yields a low current THD which meets the requisite harmonics standards and it can therefore be used as an economic solution for reactive power control over a reasonable range in high power grid without using any external harmonic filter or special ...

2018 IEEE International Conference on Power Electronics, Drives and Energy Systems (PEDES), 2018

Combined heat and power (CHP) based Microgrids (MG) are quite popular. They can generate electric... more Combined heat and power (CHP) based Microgrids (MG) are quite popular. They can generate electricity based on electric or thermal demand. A framework of multi-party energy management is proposed in this paper with heat and electricity demand for the CHP-MG. Paper also delves on energy management of MG provided by CHP and photovoltaic (PV) prosumers. A model of Microgrid Operator (MGO) is developed to determine the operational profit of CHP system where MGO acts as a leader and prosumers are the followers. The main objective of MGO is economic operation of MG or to minimize the net cost of generation from Distributed energy resources and purchasing energy from the grid. It is established by simulation that the CHP system operating in hybrid mode by selecting following electric load (FEL) mode and following thermal load (FTL) mode dynamically the most economic operation of CHP is achieved. A dealing process between MGO and prosumers is also modeled. Lastly, a case study with CHP-MG an...

IEEE Transactions on Industrial Electronics, 2018

A 3-phase 3-wire thyristor controlled reactor topology is presented comprising of two banks, invo... more A 3-phase 3-wire thyristor controlled reactor topology is presented comprising of two banks, involving thyristor switched and controlled coupled reactors (TSCCR), one bank of which is “Δ” connected and the other being “Y” connected. Each TSCCR comprises of a reactor with two well coupled identical sections, two main thyristor back-to-back switches and an auxiliary thyristor switch such that the two sections can be either connected in parallel or in series. The ratio of the effective reactor values between the “Δ” bank phase and that of the “Y” bank, as well as the condition when and which switch shall be used for phase control, are selected from an optimization process. Such an arrangement prevents the triplen harmonics from entering into the supply system and some major characteristic harmonics are also eliminated from the source current. Thus, without using any additional filters or phase shifting transformer or oversized reactors, this scheme enables reactive power control with a...

2017 IEEE Calcutta Conference (CALCON), 2017

This paper presents an attempt to develop a model for wireless power transfer (WPT) using resonan... more This paper presents an attempt to develop a model for wireless power transfer (WPT) using resonance inductive coupling over short distances with increased efficiency in comparison to simple inductively coupled coils for the same practical conditions. Non-radiative transfer technique is employed for its practical range and efficiency. With advances in WPT charging devices will be made a lot more convenient and faster as the obstacles of charging time, range, safety and cost can be easily mitigated and this also paves its way to Electric Vehicles (EV) charging which are presently gaining popularity. Charging devices may also include cell phones, medical equipment like pacemaker. The main difficulties of WPT are low efficiency and short range and this aspect with respect to the physical shape and design of coils along with strong and weak coupling is reviewed in this paper. Finally a model is proposed and implemented practically.

2017 IEEE Calcutta Conference (CALCON), 2017

Heart of DSTATCOM is its controller. Several control algorithms are demonstrated and practiced in... more Heart of DSTATCOM is its controller. Several control algorithms are demonstrated and practiced in this context. This paper enumerates different control algorithms reported in the literature and classified them in distinct categories. It aims at providing a broad perspective on the status of control methodologies of DSTATCOM to the researchers and application engineers dealing with power quality aspects of Autonomous Systems. The references are presented in a classified manner which will serve them as quick and useful reference.

2018 IEEE International Conference on Power Electronics, Drives and Energy Systems (PEDES), 2018

As the Microgrid (MG) increase in spatial size they become more prone to faults due to vagaries o... more As the Microgrid (MG) increase in spatial size they become more prone to faults due to vagaries of nature. Apart from the device level protection available for the devices of the inverters a system level protection is necessary to protect the entire power system of the MG. This paper presents a new control methodology for uninterrupted power flow in islanded MG during fault condition. The fault current is first limited and then the faulty section is taken out. A voltage-current controller in coordination with logical controller is proposed for smooth detection and management of fault current. The performance of the controllers and its effectiveness has been tested through simulation studies using a standard MG model.

2020 IEEE Calcutta Conference (CALCON), 2020

Recent days have seen a high penetration of renewable energy resources bringing a drastic reforma... more Recent days have seen a high penetration of renewable energy resources bringing a drastic reformation of modern power system. The combined operation of renewable energy resources in power system introduced the concept of microgrid, which can efficiently satisfy the load demand in small scale power distribution. Under such circumstances microgrids are prone to several protection issues. Several topologies are incorporated to ensure protection in microgrid scenario. This paper proposes a proportional resonant based current controller which efficiently handles the protection issue under dynamic and transient state operation of microgrid. Several case studies are carried out in MATLAB Simulink environment and the results validated using proposed proportional resonant based microgrid model.

IEEE Transactions on Industry Applications, 2017

The conventional 'Delta' connected Thyristor Controlled Reactor (TCR) bank used for Static VAR Co... more The conventional 'Delta' connected Thyristor Controlled Reactor (TCR) bank used for Static VAR Compensation (SVC) and other applications is proposed to be split into two identical 'Delta' banks each having kVAR capacity half of the total TCR capacity. The study presented shows that such combination of two identical 'Delta' connected reactor banks, one with phase switching by thyristors and the other with line switching thyristor arrangement can effectively reduce the harmonic generation of the TCR. Since both the three phase banks are connected in delta, the zero sequence triplen harmonics generated due to phase control of thyristors remain trapped inside the delta, thus reducing the harmonic injection into the power system. Further, some other major characteristic harmonics are also minimized in the TCR line current. Thus the proposed TCR yields a low current THD which meets the requisite harmonics standards and it can therefore be used as an economic solution for reactive power control over a reasonable range in high power grid without using any external harmonic filter or special phase shifting transformer. This paper describes in detail the modeling, analysis and performance assessment of the proposed scheme. Simulation results are furnished to evaluate the output characteristics of the scheme under varying operating conditions. Finally, experimental results are presented, which proves the theoretical proposition.

IEEE Transactions on Industrial Electronics, 2017

A three-phase three-wire thyristor controlled reactor (TCR) topology is presented comprising of t... more A three-phase three-wire thyristor controlled reactor (TCR) topology is presented comprising of two reactor banks, involving simultaneous firing angle control of both banks having maximum kVAr in the ratio of 60:40. The first reactor bank is “Δ” connected and has phase switching whereas the second reactor bank is either “Δ” or equivalent “Y” connected with line switching. Such an arrangement prevents the triplen harmonics from entering into the supply system and some major characteristic harmonics can also be eliminated from the TCR line current due to the selection of the ratings of the two reactor banks. Thus, without using any additional filters or phase shifting transformer, this scheme enables reactive power control with a low current total harmonic distortion (THD) over a reasonable range of control, meeting requisite harmonics standards. Simplicity in construction and operational requirements of the proposed topology makes it a viable and cost effective solution. Its modeling, analysis, and performance assessment are presented. Simulation and experimental results support the theoretical proposition.

International Journal of Power Electronics and Drive Systems (IJPEDS), 2011

Deregulation of the electric power energy market has thrown open opportunities for tapping the la... more Deregulation of the electric power energy market has thrown open opportunities for tapping the large number of small pockets of renewable energy sources with the asynchronous generators. Whether the power is supplied by asynchronous generator or by the grid at the remote location, its quality has become an important aspect for consumers of electricity. Efforts have been made to improve the power quality using passive filters, active filters and the new concept of Custom Power. Use of Custom power devices ensures that a load do not pollute the power supply of the other loads. One such custom power device is the DSTATCOM (Distribution Static Compensator) which is connected in shunt at the load end. The heart of the DSTATCOM is an inverter. The focus on the autonomous generation has increased in the recent years. The paper presents a comprehensive review of the DSTATCOM used for autonomous generation. It is aimed at providing a broad perspective on the status of DSTATCOM, used with Asynchronous generators, vis-à-vis its working principle, topology, supply system configurations, solid state switching devices and technology, control methodologies and approaches, application areas of DSTATCOM to researchers and application engineers dealing with power quality aspects of Autonomous Systems. Classified manner in which the references are presented in this paper will serve them as quick and useful reference.

2022 IEEE VLSI Device Circuit and System (VLSI DCS)

2022 IEEE VLSI Device Circuit and System (VLSI DCS)

2020 IEEE VLSI DEVICE CIRCUIT AND SYSTEM (VLSI DCS)

DSTATCOM is a shunt compensation device connected at Point of Common Coupling (PCC) of Distributi... more DSTATCOM is a shunt compensation device connected at Point of Common Coupling (PCC) of Distribution System to deliver quality power. The proportional & integral controller (PI) of DSTATCOM needs tuning at the time of installation as well as due to change of network parameters and working conditions, can provide a slower response. To ensure plug and play feature to the device with faster response Proportional Integral Derivative (PID) action with fuzzy interference system (FIS) is implemented in this paper. With respect to SRF theory based simple PI controller a better response is obtained with fuzzy PID controller in terms of dynamic voltage profile and Total Harmonic Distortion (THD).

Environmental Monitoring, 2022

Power generation technology has been evolving ever since Edison put up his first generating stati... more Power generation technology has been evolving ever since Edison put up his first generating station. It started with generation near the load center. To capitalize on the economics of scale large power plants were set up near the energy centers like the coal mine heads. This led to development of long distance transmission lines and the grids. Then came the restructuring of the rules and regulations governing the power system. With the issues of pollution and Global warming coming to the fore a paradigm shift is noticed in the generation of electrical power. Large number of renewable energy sources (RES) based small generators started getting connected to the distribution system. The concept of microgrid evolved to control and regulate the RES based generations. In order to effectively use these RES based generation and to capitalize from the electrical energy trading the concept of Virtual Power Plant and Community microgrid have started taking shape.

2016 21st Century Energy Needs - Materials, Systems and Applications (ICTFCEN), 2016

In recent years, the significance of distributed generation has increased rapidly in distribution... more In recent years, the significance of distributed generation has increased rapidly in distribution system. The prominent goal of DG placement is to measure the optimized location, type and sizes of DGs for getting best efficiency by maximizing or minimizing different constraints. This work investigates the recent research in the field of Swarm intelligence based optimal DG placement. Swarm intelligence is mainly categorized into Ant Colony Optimization & Particle Swarm Optimization. To get optimal solution, various researchers considers different constraints to get their solution. This article surveys those research works showing recent trends of Optimal DG Placement using Ant Colony Optimization & Particle Swarm Optimization.

2019 International Conference on Energy Management for Green Environment (UEMGREEN), 2019

Renewable energies like Photo Voltaic (PV)/ solar power are abundantly available and waiting to b... more Renewable energies like Photo Voltaic (PV)/ solar power are abundantly available and waiting to be harnessed. Being weak system renewable energy based power systems require reactive power generation close to load to unburden the source. Study reveals fixed tuned Proportional & Integral (PI) controller based DSTATCOM may not be able to provide satisfactory voltage regulation with wide load changes. DSTATCOM generally requires tuning of PI controllers by utility engineers during installation. This process is mostly trial and error approach. It is necessary to re-tune the DSTATCOM controller when there is change in operating condition. To ensure automatic control action irrespective of load conditions, soft-computing technique is implemented in the DSTATCOM. A supervised hybrid algorithm named Neuro- Fuzzy controller is adopted to ensure automatic adaptation of the controller parameters during changing load conditions. The paper presents a Synchronous Reference Frame theory (SRF) based DSTATCOM on MATLAB platform and uses a Neuro- Fuzzy inference system to get a better response in terms of dynamic voltage profile and Total Harmonic Distortion (THD) as compared to simple PI Controller.

2021 IEEE 18th India Council International Conference (INDICON), 2021

This paper proposes a decentralized secondary control scheme suitable for islanded microgrid cons... more This paper proposes a decentralized secondary control scheme suitable for islanded microgrid consist of multiple VF controlled inverters connected in parallel. The controller is based on proportional-integral control to maintain frequency and voltage under different load switching conditions. Moreover improved system performance and reliability are accomplished by managing proper power sharing among the participating inverters. Particle swam optimization is adapted to find best suitable gain parameters of the proportional-integral controller. Multiple simulation results of the islanded microgrid using MATLAB are discussed in detail to establish the above mentioned two main objectives of the paper i.e. maintaining frequency, voltage and balance load sharing among inverters.

2020 IEEE Calcutta Conference (CALCON), 2020

A paradigm shift to renewable energy based autonomous grids are being observed worldwide. The dc ... more A paradigm shift to renewable energy based autonomous grids are being observed worldwide. The dc autonomous systems are being explored in addition to the ac autonomous systems to provide power to many electronics appliances without going through rectification and filtering. This paper explores the possibilities of having a hybrid autonomous grid providing quality power to both ac and dc loads directly. An Induction Generators based ac grid is proposed whose requirement of reactive power under dynamic mode is met by a DSTATCOM. The dc bus of the DSTATCOM is supplied by a Solar PV source. The dc bus forms the dc grid and directly supplies the dc loads. The autonomous grid is simulated as a hybrid grid to supply both ac and dc power. The entire simulation is carried out on a MATLAB platform.

Michael Faraday IET International Summit 2015, 2015

Power blackouts are major catastrophic failures in large inter connected power systems. Risk of b... more Power blackouts are major catastrophic failures in large inter connected power systems. Risk of blackouts is more than expected and must be considered in the power system studies. In past, many power blackouts occurredworldwide. An attempt has been made to summarize those major blackouts with their effects. To resolve the risk factors identified by the researchers various methodologies were proposed. This paper surveys major blackouts, analyze the reasons behind them and report major prevention methodologies proposed by various authors and aim at providing a broad perspective on blackouts in power system to researchers and application engineers. Classified manner in which the references are presented will serve them as quick and useful reference.

2016 IEEE International Conference on Power Electronics, Drives and Energy Systems (PEDES), 2016

In this paper the conventional ‘Delta’ connected TCR bank is split into two identical ‘Delta’ ban... more In this paper the conventional ‘Delta’ connected TCR bank is split into two identical ‘Delta’ banks each having kVAr capacity half of the total TCR capacity. The study presented shows that such combination of two identical ‘Delta’ connected reactor banks, one with phase switching by thyristors and the other with line switching thyristor arrangement can effectively reduce the harmonic generation of TCR. Since both the three phase banks are connected in delta, the zero sequence triplen harmonics generated due to phase control of thyristors remain trapped inside the delta, thus reducing the harmonic injection into the power system. Further, some other major characteristic harmonics are also minimized in the TCR line current. Thus the new TCR yields a low current THD which meets the requisite harmonics standards and it can therefore be used as an economic solution for reactive power control over a reasonable range in high power grid without using any external harmonic filter or special ...

2018 IEEE International Conference on Power Electronics, Drives and Energy Systems (PEDES), 2018

Combined heat and power (CHP) based Microgrids (MG) are quite popular. They can generate electric... more Combined heat and power (CHP) based Microgrids (MG) are quite popular. They can generate electricity based on electric or thermal demand. A framework of multi-party energy management is proposed in this paper with heat and electricity demand for the CHP-MG. Paper also delves on energy management of MG provided by CHP and photovoltaic (PV) prosumers. A model of Microgrid Operator (MGO) is developed to determine the operational profit of CHP system where MGO acts as a leader and prosumers are the followers. The main objective of MGO is economic operation of MG or to minimize the net cost of generation from Distributed energy resources and purchasing energy from the grid. It is established by simulation that the CHP system operating in hybrid mode by selecting following electric load (FEL) mode and following thermal load (FTL) mode dynamically the most economic operation of CHP is achieved. A dealing process between MGO and prosumers is also modeled. Lastly, a case study with CHP-MG an...

IEEE Transactions on Industrial Electronics, 2018

A 3-phase 3-wire thyristor controlled reactor topology is presented comprising of two banks, invo... more A 3-phase 3-wire thyristor controlled reactor topology is presented comprising of two banks, involving thyristor switched and controlled coupled reactors (TSCCR), one bank of which is “Δ” connected and the other being “Y” connected. Each TSCCR comprises of a reactor with two well coupled identical sections, two main thyristor back-to-back switches and an auxiliary thyristor switch such that the two sections can be either connected in parallel or in series. The ratio of the effective reactor values between the “Δ” bank phase and that of the “Y” bank, as well as the condition when and which switch shall be used for phase control, are selected from an optimization process. Such an arrangement prevents the triplen harmonics from entering into the supply system and some major characteristic harmonics are also eliminated from the source current. Thus, without using any additional filters or phase shifting transformer or oversized reactors, this scheme enables reactive power control with a...

2017 IEEE Calcutta Conference (CALCON), 2017

This paper presents an attempt to develop a model for wireless power transfer (WPT) using resonan... more This paper presents an attempt to develop a model for wireless power transfer (WPT) using resonance inductive coupling over short distances with increased efficiency in comparison to simple inductively coupled coils for the same practical conditions. Non-radiative transfer technique is employed for its practical range and efficiency. With advances in WPT charging devices will be made a lot more convenient and faster as the obstacles of charging time, range, safety and cost can be easily mitigated and this also paves its way to Electric Vehicles (EV) charging which are presently gaining popularity. Charging devices may also include cell phones, medical equipment like pacemaker. The main difficulties of WPT are low efficiency and short range and this aspect with respect to the physical shape and design of coils along with strong and weak coupling is reviewed in this paper. Finally a model is proposed and implemented practically.

2017 IEEE Calcutta Conference (CALCON), 2017

Heart of DSTATCOM is its controller. Several control algorithms are demonstrated and practiced in... more Heart of DSTATCOM is its controller. Several control algorithms are demonstrated and practiced in this context. This paper enumerates different control algorithms reported in the literature and classified them in distinct categories. It aims at providing a broad perspective on the status of control methodologies of DSTATCOM to the researchers and application engineers dealing with power quality aspects of Autonomous Systems. The references are presented in a classified manner which will serve them as quick and useful reference.

2018 IEEE International Conference on Power Electronics, Drives and Energy Systems (PEDES), 2018

As the Microgrid (MG) increase in spatial size they become more prone to faults due to vagaries o... more As the Microgrid (MG) increase in spatial size they become more prone to faults due to vagaries of nature. Apart from the device level protection available for the devices of the inverters a system level protection is necessary to protect the entire power system of the MG. This paper presents a new control methodology for uninterrupted power flow in islanded MG during fault condition. The fault current is first limited and then the faulty section is taken out. A voltage-current controller in coordination with logical controller is proposed for smooth detection and management of fault current. The performance of the controllers and its effectiveness has been tested through simulation studies using a standard MG model.

2020 IEEE Calcutta Conference (CALCON), 2020

Recent days have seen a high penetration of renewable energy resources bringing a drastic reforma... more Recent days have seen a high penetration of renewable energy resources bringing a drastic reformation of modern power system. The combined operation of renewable energy resources in power system introduced the concept of microgrid, which can efficiently satisfy the load demand in small scale power distribution. Under such circumstances microgrids are prone to several protection issues. Several topologies are incorporated to ensure protection in microgrid scenario. This paper proposes a proportional resonant based current controller which efficiently handles the protection issue under dynamic and transient state operation of microgrid. Several case studies are carried out in MATLAB Simulink environment and the results validated using proposed proportional resonant based microgrid model.

IEEE Transactions on Industry Applications, 2017

The conventional 'Delta' connected Thyristor Controlled Reactor (TCR) bank used for Static VAR Co... more The conventional 'Delta' connected Thyristor Controlled Reactor (TCR) bank used for Static VAR Compensation (SVC) and other applications is proposed to be split into two identical 'Delta' banks each having kVAR capacity half of the total TCR capacity. The study presented shows that such combination of two identical 'Delta' connected reactor banks, one with phase switching by thyristors and the other with line switching thyristor arrangement can effectively reduce the harmonic generation of the TCR. Since both the three phase banks are connected in delta, the zero sequence triplen harmonics generated due to phase control of thyristors remain trapped inside the delta, thus reducing the harmonic injection into the power system. Further, some other major characteristic harmonics are also minimized in the TCR line current. Thus the proposed TCR yields a low current THD which meets the requisite harmonics standards and it can therefore be used as an economic solution for reactive power control over a reasonable range in high power grid without using any external harmonic filter or special phase shifting transformer. This paper describes in detail the modeling, analysis and performance assessment of the proposed scheme. Simulation results are furnished to evaluate the output characteristics of the scheme under varying operating conditions. Finally, experimental results are presented, which proves the theoretical proposition.

IEEE Transactions on Industrial Electronics, 2017

A three-phase three-wire thyristor controlled reactor (TCR) topology is presented comprising of t... more A three-phase three-wire thyristor controlled reactor (TCR) topology is presented comprising of two reactor banks, involving simultaneous firing angle control of both banks having maximum kVAr in the ratio of 60:40. The first reactor bank is “Δ” connected and has phase switching whereas the second reactor bank is either “Δ” or equivalent “Y” connected with line switching. Such an arrangement prevents the triplen harmonics from entering into the supply system and some major characteristic harmonics can also be eliminated from the TCR line current due to the selection of the ratings of the two reactor banks. Thus, without using any additional filters or phase shifting transformer, this scheme enables reactive power control with a low current total harmonic distortion (THD) over a reasonable range of control, meeting requisite harmonics standards. Simplicity in construction and operational requirements of the proposed topology makes it a viable and cost effective solution. Its modeling, analysis, and performance assessment are presented. Simulation and experimental results support the theoretical proposition.