Avinash Joshi - Academia.edu (original) (raw)

Papers by Avinash Joshi

Research paper thumbnail of Toxicity to rats and mice of purified phytohaemagglutinins from four Indian legumes

Toxicon, 1972

1. Toxicon. 1972 Jan;10(1):89-91. Toxicity to rats and mice of purified phytohaemagglutinins from... more 1. Toxicon. 1972 Jan;10(1):89-91. Toxicity to rats and mice of purified phytohaemagglutinins from four Indian legumes. Manage L, Joshi A, Sohonie K. PMID: 5015549 [PubMed - indexed for MEDLINE]. MeSH Terms. Animals; ...

Research paper thumbnail of A switched-boost topology for renewable power application

Abstract This paper proposes a novel switched-boost converter suitable for microgrid application.... more Abstract This paper proposes a novel switched-boost converter suitable for microgrid application. The proposed converter can provide a DC output, which is greater than the input voltage. Apart from a DC, it can be, simultaneously, used to supply an AC load. In order to ...

Research paper thumbnail of Modified Steady-State Analysis of the Current-Source Inverter and Squirrel Cage Motor Drive

IEEE Transactions on Industry Applications, 1981

Research paper thumbnail of Cascaded multilevel control of DSTATCOM using multiband hysteresis modulation

In this paper a cascaded H-bridge inverter topology is used in a distribution static compensator ... more In this paper a cascaded H-bridge inverter topology is used in a distribution static compensator (DSTATCOM). A new multiband hysteresis algorithm is used to control the switches of the cascaded H-bridges leading to multilevel output of the inverter. The algorithm requires hierarchal switching of each H-bridge. Sequential change in the hierarchy facilitates equal charging and discharging of each capacitor. This leads to self-balancing of voltage across the capacitors. The multiband hysteresis algorithm is robust even under unequal capacitor voltages due to the dissimilarity in the H-bridge and capacitor units. The use of a resonant controller provides good tracking of the fundamental component of reference current. Discrete sampling of the switching function limits the switching frequency of the semiconductor devices. A 7-level cascaded inverter topology is considered for shunt compensation of an 11-kV distribution system. The results are validated through PSCAD/EMTDC simulation software

Research paper thumbnail of Inverter topologies for DSTATCOM applications—a simulation study

Electric Power Systems Research, 2005

This paper describes a few different topologies of inverters used for realizing a distribution st... more This paper describes a few different topologies of inverters used for realizing a distribution static compensator (DSTATCOM). A brief introduction of the need for shunt compensation as well as the requirements of the shunt compensator has also been given. An algorithm for ...

Research paper thumbnail of Torsional interaction studies on a power system compensated by SSSC and fixed capacitor

IEEE Transactions on Power Delivery, 2003

Research paper thumbnail of State Feedback Control of Multilevel Inverters for DSTATCOM Applications

IEEE Transactions on Power Delivery, 2007

Abstract—In this paper, load compensation using multilevel inverter-based distribution static com... more Abstract—In this paper, load compensation using multilevel inverter-based distribution static compensator (DSTATCOM) is presented. The DSTATCOM is connected to a three-phase four-wire (3p4w) distribution system. Two different multilevel inverter topologies are used ...

Research paper thumbnail of Torsional oscillation studies in an SSSC compensated power system

Electric Power Systems Research, 2000

Series capacitive compensation in ac transmission systems can yield several benefits such as incr... more Series capacitive compensation in ac transmission systems can yield several benefits such as increased power transfer capability and enhancement of transient stability. However, the extent to which a transmission line can be compensated with conventional series capacitance is ...

Research paper thumbnail of Static shunt and series compensations of an SMIB system using flying capacitor multilevel inverter

IEEE Transactions on Power Delivery, 2005

Abstract—The flying capacitor multilevel inverter (FCMLI) is a multiple voltage level inverter to... more Abstract—The flying capacitor multilevel inverter (FCMLI) is a multiple voltage level inverter topology intended for high-power and high-voltage operations at low distortion. It uses capacitors, called flying capacitors, to clamp the voltage across the power semiconductor devices. A method ...

Research paper thumbnail of Hysteresis Current Control Operation of Flying Capacitor Multilevel Inverter and Its Application in Shunt Compensation of Distribution Systems

IEEE Transactions on Power Delivery, 2007

Abstract—Flying capacitor multilevel inverter (FCMLI) is a multiple voltage level inverter topolo... more Abstract—Flying capacitor multilevel inverter (FCMLI) is a multiple voltage level inverter topology intended for high voltage and power operations with low distortion. It uses capacitors, called flying capacitors for clamping the voltage across the power semiconductor devices. In this ...

Research paper thumbnail of The protection of sensitive loads from interharmonic currents using shunt/series active filters

Electric Power Systems Research, 2005

The paper discusses the operation and control algorithms of shunt and series active filters. Perf... more The paper discusses the operation and control algorithms of shunt and series active filters. Performance of each of these filters is studied separately when it is connected to protect sensitive loads in a power distribution system. It is assumed that the distribution system is polluted due to ...

Research paper thumbnail of Switching Characterization of Cascaded Multilevel-Inverter-Controlled Systems

IEEE Transactions on Industrial Electronics, 2008

Research paper thumbnail of Improved Multilevel Hysteresis Current Regulation and Capacitor Voltage Balancing Schemes for Flying Capacitor Multilevel Inverter

IEEE Transactions on Power Electronics, 2008

Abstract—This paper focuses on the development of multilevel hysteresis current regulation strate... more Abstract—This paper focuses on the development of multilevel hysteresis current regulation strategies. Two such strategies have been discussed and some modifications in their control tasks have been proposed to achieve more reliable and improved perfor-mance. In ...

Research paper thumbnail of Operation of a DSTATCOM in voltage control mode

IEEE Transactions on Power Delivery, 2003

Research paper thumbnail of Interline Unified Power Quality Conditioner

IEEE Transactions on Power Delivery, 2007

Research paper thumbnail of A new approach to load balancing and power factor correction in power distribution system

IEEE Transactions on Power Delivery, 2000

Abstract This paper presents a new approach for generating reference currents for an active filte... more Abstract This paper presents a new approach for generating reference currents for an active filter and/or a static compensator. It is assumed that the compensator is connected to a load that may either be connected in star or in delta. The load can be unbalanced and may also ...

Research paper thumbnail of A new STATCOM topology to compensate loads containing AC and DC components

The paper proposes a new topology of STATCOM that is capable of supplying AC and DC loads in 3-ph... more The paper proposes a new topology of STATCOM that is capable of supplying AC and DC loads in 3-phase 4-wire distribution systems. In this, the authors utilize the method of instantaneous symmetrical components to extract the compensator reference currents that are then tracked in a hysteresis band current control mode. A suitable state space model of the STATCOM is derived. Based on this model, a single cycle control strategy is proposed and is shown to compensate for the drift in capacitor voltages due to DC components of load currents. The operation of the compensator has been verified through MATLAB simulation and detailed simulation results are given

Research paper thumbnail of Design of a capacitor-supported dynamic voltage restorer (DVR) for unbalanced and distorted loads

IEEE Transactions on Power Delivery, 2004

Abstract The paper discusses the operating principles and control characteristics of a dynamic vo... more Abstract The paper discusses the operating principles and control characteristics of a dynamic voltage restorer (DVR) that protects sensitive but unbalanced and/or distorted loads. The main aim of the DVR is to regulate the voltage at the load terminal irrespective ...

Research paper thumbnail of A Novel Method of Load Compensation Under Unbalanced and Distorted Voltages

IEEE Transactions on Power Delivery, 2007

Research paper thumbnail of The concept and operating principles of a mini custom power park

IEEE Transactions on Power Delivery, 2004

Abstract—The paper discusses the concept of a mini custom power park in which the voltage inside ... more Abstract—The paper discusses the concept of a mini custom power park in which the voltage inside the park is tightly regulated by a distribution static compensator (DSTATCOM). It will be shown on the basis of simulations with ideal components that solid state protection ...

Research paper thumbnail of Toxicity to rats and mice of purified phytohaemagglutinins from four Indian legumes

Toxicon, 1972

1. Toxicon. 1972 Jan;10(1):89-91. Toxicity to rats and mice of purified phytohaemagglutinins from... more 1. Toxicon. 1972 Jan;10(1):89-91. Toxicity to rats and mice of purified phytohaemagglutinins from four Indian legumes. Manage L, Joshi A, Sohonie K. PMID: 5015549 [PubMed - indexed for MEDLINE]. MeSH Terms. Animals; ...

Research paper thumbnail of A switched-boost topology for renewable power application

Abstract This paper proposes a novel switched-boost converter suitable for microgrid application.... more Abstract This paper proposes a novel switched-boost converter suitable for microgrid application. The proposed converter can provide a DC output, which is greater than the input voltage. Apart from a DC, it can be, simultaneously, used to supply an AC load. In order to ...

Research paper thumbnail of Modified Steady-State Analysis of the Current-Source Inverter and Squirrel Cage Motor Drive

IEEE Transactions on Industry Applications, 1981

Research paper thumbnail of Cascaded multilevel control of DSTATCOM using multiband hysteresis modulation

In this paper a cascaded H-bridge inverter topology is used in a distribution static compensator ... more In this paper a cascaded H-bridge inverter topology is used in a distribution static compensator (DSTATCOM). A new multiband hysteresis algorithm is used to control the switches of the cascaded H-bridges leading to multilevel output of the inverter. The algorithm requires hierarchal switching of each H-bridge. Sequential change in the hierarchy facilitates equal charging and discharging of each capacitor. This leads to self-balancing of voltage across the capacitors. The multiband hysteresis algorithm is robust even under unequal capacitor voltages due to the dissimilarity in the H-bridge and capacitor units. The use of a resonant controller provides good tracking of the fundamental component of reference current. Discrete sampling of the switching function limits the switching frequency of the semiconductor devices. A 7-level cascaded inverter topology is considered for shunt compensation of an 11-kV distribution system. The results are validated through PSCAD/EMTDC simulation software

Research paper thumbnail of Inverter topologies for DSTATCOM applications—a simulation study

Electric Power Systems Research, 2005

This paper describes a few different topologies of inverters used for realizing a distribution st... more This paper describes a few different topologies of inverters used for realizing a distribution static compensator (DSTATCOM). A brief introduction of the need for shunt compensation as well as the requirements of the shunt compensator has also been given. An algorithm for ...

Research paper thumbnail of Torsional interaction studies on a power system compensated by SSSC and fixed capacitor

IEEE Transactions on Power Delivery, 2003

Research paper thumbnail of State Feedback Control of Multilevel Inverters for DSTATCOM Applications

IEEE Transactions on Power Delivery, 2007

Abstract—In this paper, load compensation using multilevel inverter-based distribution static com... more Abstract—In this paper, load compensation using multilevel inverter-based distribution static compensator (DSTATCOM) is presented. The DSTATCOM is connected to a three-phase four-wire (3p4w) distribution system. Two different multilevel inverter topologies are used ...

Research paper thumbnail of Torsional oscillation studies in an SSSC compensated power system

Electric Power Systems Research, 2000

Series capacitive compensation in ac transmission systems can yield several benefits such as incr... more Series capacitive compensation in ac transmission systems can yield several benefits such as increased power transfer capability and enhancement of transient stability. However, the extent to which a transmission line can be compensated with conventional series capacitance is ...

Research paper thumbnail of Static shunt and series compensations of an SMIB system using flying capacitor multilevel inverter

IEEE Transactions on Power Delivery, 2005

Abstract—The flying capacitor multilevel inverter (FCMLI) is a multiple voltage level inverter to... more Abstract—The flying capacitor multilevel inverter (FCMLI) is a multiple voltage level inverter topology intended for high-power and high-voltage operations at low distortion. It uses capacitors, called flying capacitors, to clamp the voltage across the power semiconductor devices. A method ...

Research paper thumbnail of Hysteresis Current Control Operation of Flying Capacitor Multilevel Inverter and Its Application in Shunt Compensation of Distribution Systems

IEEE Transactions on Power Delivery, 2007

Abstract—Flying capacitor multilevel inverter (FCMLI) is a multiple voltage level inverter topolo... more Abstract—Flying capacitor multilevel inverter (FCMLI) is a multiple voltage level inverter topology intended for high voltage and power operations with low distortion. It uses capacitors, called flying capacitors for clamping the voltage across the power semiconductor devices. In this ...

Research paper thumbnail of The protection of sensitive loads from interharmonic currents using shunt/series active filters

Electric Power Systems Research, 2005

The paper discusses the operation and control algorithms of shunt and series active filters. Perf... more The paper discusses the operation and control algorithms of shunt and series active filters. Performance of each of these filters is studied separately when it is connected to protect sensitive loads in a power distribution system. It is assumed that the distribution system is polluted due to ...

Research paper thumbnail of Switching Characterization of Cascaded Multilevel-Inverter-Controlled Systems

IEEE Transactions on Industrial Electronics, 2008

Research paper thumbnail of Improved Multilevel Hysteresis Current Regulation and Capacitor Voltage Balancing Schemes for Flying Capacitor Multilevel Inverter

IEEE Transactions on Power Electronics, 2008

Abstract—This paper focuses on the development of multilevel hysteresis current regulation strate... more Abstract—This paper focuses on the development of multilevel hysteresis current regulation strategies. Two such strategies have been discussed and some modifications in their control tasks have been proposed to achieve more reliable and improved perfor-mance. In ...

Research paper thumbnail of Operation of a DSTATCOM in voltage control mode

IEEE Transactions on Power Delivery, 2003

Research paper thumbnail of Interline Unified Power Quality Conditioner

IEEE Transactions on Power Delivery, 2007

Research paper thumbnail of A new approach to load balancing and power factor correction in power distribution system

IEEE Transactions on Power Delivery, 2000

Abstract This paper presents a new approach for generating reference currents for an active filte... more Abstract This paper presents a new approach for generating reference currents for an active filter and/or a static compensator. It is assumed that the compensator is connected to a load that may either be connected in star or in delta. The load can be unbalanced and may also ...

Research paper thumbnail of A new STATCOM topology to compensate loads containing AC and DC components

The paper proposes a new topology of STATCOM that is capable of supplying AC and DC loads in 3-ph... more The paper proposes a new topology of STATCOM that is capable of supplying AC and DC loads in 3-phase 4-wire distribution systems. In this, the authors utilize the method of instantaneous symmetrical components to extract the compensator reference currents that are then tracked in a hysteresis band current control mode. A suitable state space model of the STATCOM is derived. Based on this model, a single cycle control strategy is proposed and is shown to compensate for the drift in capacitor voltages due to DC components of load currents. The operation of the compensator has been verified through MATLAB simulation and detailed simulation results are given

Research paper thumbnail of Design of a capacitor-supported dynamic voltage restorer (DVR) for unbalanced and distorted loads

IEEE Transactions on Power Delivery, 2004

Abstract The paper discusses the operating principles and control characteristics of a dynamic vo... more Abstract The paper discusses the operating principles and control characteristics of a dynamic voltage restorer (DVR) that protects sensitive but unbalanced and/or distorted loads. The main aim of the DVR is to regulate the voltage at the load terminal irrespective ...

Research paper thumbnail of A Novel Method of Load Compensation Under Unbalanced and Distorted Voltages

IEEE Transactions on Power Delivery, 2007

Research paper thumbnail of The concept and operating principles of a mini custom power park

IEEE Transactions on Power Delivery, 2004

Abstract—The paper discusses the concept of a mini custom power park in which the voltage inside ... more Abstract—The paper discusses the concept of a mini custom power park in which the voltage inside the park is tightly regulated by a distribution static compensator (DSTATCOM). It will be shown on the basis of simulations with ideal components that solid state protection ...