Sanjeet Dwivedi - Academia.edu (original) (raw)

Papers by Sanjeet Dwivedi

1A.1 Novel Speed Control Technique for Permanent Split Capacitor Motors Using

A New Indirect Power Control of Induction Motor Drives

2020 International Conference on Power Electronics & IoT Applications in Renewable Energy and its Control (PARC), 2020

This paper presents an advanced Indirect Power Control (IPC) approach for the speed control of th... more This paper presents an advanced Indirect Power Control (IPC) approach for the speed control of the induction motor (IM) drives. The IPC is developed as a next-level modification to direct torque control (DTC) and indirect real and reactive power control (IRRPC) schemes. In IPC, the real and reactive powers are used as the functions of torque and flux respectively. These power functions are used to create the switching states of the converter and thus speed control of IM drive is achieved with the provision of power factor control. The complete implementation of the proposed IPC scheme is discussed thoroughly in this paper, and validated through the MATLAB simulation for the speed control of IM drives.

Journal of Power Electronics, 2006

This paper deals with the analysis, design and implementation of an AC-DC Zeta converter in disco... more This paper deals with the analysis, design and implementation of an AC-DC Zeta converter in discontinuous current mode (DCM) of operation used for power quality improvement at AC mains in direct torque controlled (DTC) permanent magnet synchronous motor (PMSM) drives. The designed Zeta converter feeds a direct torque controlled PMSM drive system. Modeling and simulation is carried out in a standard PSIM software environment. Test results are obtained on the developed prototype Zeta converter using DSP ADMC401. The results obtained demonstrate the effectiveness of the Zeta converter in improving power quality at AC mains in the PMSM drive system.

Port-Controlled Hamilton Model and Control of Induction Machine with Inverter Output LC Filter

2021 1st International Conference on Power Electronics and Energy (ICPEE), 2021

Pulse width modulated (PWM) inverter fed induction machine based electric drive is very popular d... more Pulse width modulated (PWM) inverter fed induction machine based electric drive is very popular drive system. Typically, an LC filter is place between PWM inverter and the machine. This may cause instability due to increased order and poor controller design. To design a stable control law, this paper presents the model of the system using port-controlled Hamilton model approach. This model is further used to define a passivity-based control (PBC) law which guarantees a stable system. The proposed control law is simulated to verify the proposed PBC law.

Control of Induction Motor Drives –Technological Advancements

The induction motor (IM) with variable frequency AC inverter is widely used in industrial applica... more The induction motor (IM) with variable frequency AC inverter is widely used in industrial applications which require good dynamic and steady state performance over a wide range of speed. Scalar control has always been inaccurate and gives poor dynamic performance due of the coupling between variables. Vector control by rotor flux orientation drives the machine analogous to a DC machine and offers good dynamic performance for a wide range of application. However, the dynamic performance is dependent over the precise measurement of rotor flux, torque and speed. Direct torque control (DTC) on the other hand reduces the complexity of speed measurement, but requires flux and torque estimation. In this paper, industrial benefits and problems of DTC method has been discussed and reviewed with the latest improved available solutions of such problems. The problem of real time flux estimation over wide range can be overcome by using sensorless control of IM. In this paper estimation technique...

Synchronous motor drives

Modeling, Simulation and Control of Electrical Drives

This chapter deals with the development of model, simulation and hardware implementation of the s... more This chapter deals with the development of model, simulation and hardware implementation of the synchronous motor (SM) drive under various operating conditions. In the modeling of vector-controlled PMSM drive, the complete model of the SM drive system is developed for different types of speed controllers with a view to improving the performance of the drive. The simulations of PMSM drive are carried out in MATLAB ® environment with Power System Blockset (PSB) and fuzzy logic control (FLC) toolboxes. The hardware of vector-controlled PMSM drive system includes control circuit, interfacing circuit and the power circuit. The control circuit is implemented in DSP ADMC401 and the power circuit consists of the voltage source inverter (VSI) and the PMSM. The interfacing circuit is required for feedback signals in the form of motor winding currents and position as well as rotational speed of the rotor. The DSP-based software algorithm is used to obtain the performance of the drive for starting, speed reversal, load perturbation and steady-state response for different types of closed-loop speed controllers. The simulated results are presented in this chapter along with DSP-based implementation results of developed prototype of drive to validate both the model and the control algorithms.

Lyapunov Function based Stability Analysis of Symmetric Induction Machine

IECON 2021 – 47th Annual Conference of the IEEE Industrial Electronics Society

The induction machine is considered as the most reliable and robust electric machine and widely u... more The induction machine is considered as the most reliable and robust electric machine and widely used for various applications. The induction machine is a nonlinear system. Therefore, its operating point stability analysis can be done using the Lyapunov function approach. In this paper, a model of the induction machine is analyzed, and an approach to find a Lyapunov function for the machine is discussed. The Lyapunov function has its region-of-attraction which is also analyzed in the paper. The simulation results are shown to support analysis.

A Review of Sensor Reduction Techniques in Permanent Magnet Synchronous Motor Drives

International Journal of Power and Energy Systems

In permanent magnet synchronous motor (PMSM) drives, sensors are used to sense the position/speed... more In permanent magnet synchronous motor (PMSM) drives, sensors are used to sense the position/speed of the rotor and to sense current and voltage of the drive. These sensors are susceptible to atmospheric change and less reliable due to fragile nature. The cost of the drive is also increased to great extent with these sensors, therefore sensor elimination is very important for greater reliability and cost effectiveness of the drive. For improving the closed loop performance of this drive, it is utmost necessary to estimate the position and speed, voltage, current in the drive correctly so that high level of performance for closed loop control can be implemented. This paper presents a comprehensive review of different mechanical and electrical sensor reduction techniques. It is aimed to provide in-depth coverage of the status of different position, speed, voltage and current sensorless techniques. A classified list of more than 200 research publications on the status of mechanical sensor elimination and reduced electrical sensor operation is included for a quick reference.

Sensorless Control of Electric Drives – A Technological Review

IETE Technical Review

Electric drive without electrical and mechanical sensors is the critical obligation in most of th... more Electric drive without electrical and mechanical sensors is the critical obligation in most of the industrial applications due to its user-friendly hardware, lower maintenance, low cost, more reliability, etc. To replace the sensors, a number of schemes are employed, which extract the sensored data from the known parameters by using the machine model and/or its mechanical structure. In the past few years, researchers developed a variety of sensorless schemes for various applications by using different drives and their control algorithms to make it vigorous in any electrical, mechanical, and physical environments. In this paper, more than 275 publications were critically reviewed and the technological progression was presented for the sensorless control of electric drives by various motor control techniques. In addition to this, the review of sensorless AC drive system and its application was also studied and presented.

Frugal and Reverse Innovation for Harnessing the Business Potential of Emerging Markets — the Case of a Danish MNC

International Journal of Innovation Management

In recent years, there has been a shift in the epicenter of innovation from developed to emerging... more In recent years, there has been a shift in the epicenter of innovation from developed to emerging markets. Western multinationals are increasingly harnessing the potential of emerging markets by setting up local subsidiaries and developing frugal and reverse innovations. This study is an attempt to explore this shift and investigate the process of development of these innovations using a case study analysis approach. The study analyses the case of a technology-based Danish multinational (MNC) and explores how frugal innovations in India and China are developed. Based on nine interviews with leading R&D experts, the results provide evidence for the ongoing innovation shift and offer insights into the development of frugal products in local R&D projects. Growing traction towards reverse innovation, where MNCs are developing frugal products for global markets is also an important finding.

Five-phase five-level open-winding/star-winding inverter drive for low-voltage/high-current applications

2016 IEEE Transportation Electrification Conference and Expo, Asia-Pacific (ITEC Asia-Pacific), 2016

This paper work proposed a five-phase five-level open-/star-winding multilevel AC converter suita... more This paper work proposed a five-phase five-level open-/star-winding multilevel AC converter suitable for low-voltage/high-current applications. Modular converter consists of classical two-level five-phase voltage source inverter (VSI) with slight reconfiguration to serve as a multilevel converter for open-/star-winding loads. Elaborately, per phase of the VSI is built with one additional bi-directional switch (MOSFET/IGBT) and all five legs links to the neutral through two capacitors. The structure allows multilevel generation to five-level output with greater potential for fault tolerability under drive failure (open-winding) and per phase fault (open-/star-winding). Further, original optimal single carrier zero-shifted modulation (SCZSFM) algorithm is proposed and capable to modulate each VSI, which is equivalent to standard 5-level multilevel inverters. Set of results are provided based on numerical modeling with MATLAB/PLECS simulation software's and observed behavior shown good agreement with theoretical expectations.

A novel six level inverter for single-phase stand-alone photovoltaic system

2016 18th European Conference on Power Electronics and Applications (EPE'16 ECCE Europe), 2016

This paper proposes the fundamental-frequency modulated novel six-level inverter topology for sin... more This paper proposes the fundamental-frequency modulated novel six-level inverter topology for single-phase stand-alone photovoltaic (PV) system. It consists of a full-bridge inverter circuit with two pairs of anti-parallel connected switching devices, four diodes and three independent DC sources (PV modules) to obtain six level output. The theoretical discussion of proposed system is also supported by simulation and laboratory prototype results.

Journal of Electrical Engineering and Technology, 2008

Optimized carrier based multilevel generated modified dual three-phase open-winding inverter for medium power application

2016 IEEE Transportation Electrification Conference and Expo, Asia-Pacific (ITEC Asia-Pacific), 2016

This paper presents a novel carrier based multilevel modulation for modified dual three-phase ope... more This paper presents a novel carrier based multilevel modulation for modified dual three-phase open-winding inverter applicable for low-voltage/high-current applications. A standard three-phase voltage source inverter (VSI) is connected across the open-winding of both ends of the motor. Each VSI incorporates an additional bi-directional switching device (MOSFET/IGBT) per phase and all three legs link to the neutral of two capacitors in the power circuit. An original optimal double carrier zero-shifted five-level modulation (DCZ SFM) algorithm is also presented and is used to modulate each VSI in a similar way to a 5-level multilevel inverter. The complete model based system is simulated in Matlab/PLECS software's and set of results are presented which shows good conformity with the theoretical analysis.

The highest efficiency, fast dynamic response and high power density of permanent magnet brushles... more The highest efficiency, fast dynamic response and high power density of permanent magnet brushless (PMBL) machines are resulting in their wide spread applications. There are various type of these machines including permanent magnet synchronous motors (PMSM), permanent magnet brushless dc motors (PMBLDM) and hybrid doubly salient motors. This paper presents a comprehensive review of different configurations of PMBL machines, their rotor geometries and application potential, state of art and recent trends in PMBL machines. A classified list of more than one hundred research publications on the subject is appended for quick reference.

Permanent Magnet Flux Online Estimation Based on Zero Voltage Vector Injection

IEEE Transactions on Power Electronics, 2015

ABSTRACT

Minimum Voltage Vector Injection Method for Sensorless Control of PMSM for Low-Speed Operations

IEEE Transactions on Power Electronics, 2015

ABSTRACT

Improved power quality AC-DC flyback converter for variable speed permanent magnet synchronous motor drive

IEEE Power India Conference, 2006

This paper deals with the analysis and design of a high frequency isolated AC-DC flyback converte... more This paper deals with the analysis and design of a high frequency isolated AC-DC flyback converter in discontinuous current mode (DCM) of operation used for power quality improvement at AC mains in vector controlled permanent magnet synchronous motor (PMSM) drive. The design of the flyback converter is carried out to feed a vector controlled PMSM drive system. Modeling and simulation

IOSR Journal of Engineering, 2012

An enhancement in dynamic performance of a traditional direct torque control (DTC) drive can be a... more An enhancement in dynamic performance of a traditional direct torque control (DTC) drive can be achieved by a robust speed control algorithm while the steady state performance depends upon an efficient flux estimation algorithm. In this paper a conventional PI controller in the speed control loop is replaced by a sliding mode speed controller and a modified low pass filter based digital integration algorithm with tunable cut off frequency is proposed for flux estimation. The proposed study is investigated through simulation and experimentally validated on a test drive.

1A.1 Novel Speed Control Technique for Permanent Split Capacitor Motors Using

A New Indirect Power Control of Induction Motor Drives

2020 International Conference on Power Electronics & IoT Applications in Renewable Energy and its Control (PARC), 2020

This paper presents an advanced Indirect Power Control (IPC) approach for the speed control of th... more This paper presents an advanced Indirect Power Control (IPC) approach for the speed control of the induction motor (IM) drives. The IPC is developed as a next-level modification to direct torque control (DTC) and indirect real and reactive power control (IRRPC) schemes. In IPC, the real and reactive powers are used as the functions of torque and flux respectively. These power functions are used to create the switching states of the converter and thus speed control of IM drive is achieved with the provision of power factor control. The complete implementation of the proposed IPC scheme is discussed thoroughly in this paper, and validated through the MATLAB simulation for the speed control of IM drives.

Journal of Power Electronics, 2006

This paper deals with the analysis, design and implementation of an AC-DC Zeta converter in disco... more This paper deals with the analysis, design and implementation of an AC-DC Zeta converter in discontinuous current mode (DCM) of operation used for power quality improvement at AC mains in direct torque controlled (DTC) permanent magnet synchronous motor (PMSM) drives. The designed Zeta converter feeds a direct torque controlled PMSM drive system. Modeling and simulation is carried out in a standard PSIM software environment. Test results are obtained on the developed prototype Zeta converter using DSP ADMC401. The results obtained demonstrate the effectiveness of the Zeta converter in improving power quality at AC mains in the PMSM drive system.

Port-Controlled Hamilton Model and Control of Induction Machine with Inverter Output LC Filter

2021 1st International Conference on Power Electronics and Energy (ICPEE), 2021

Pulse width modulated (PWM) inverter fed induction machine based electric drive is very popular d... more Pulse width modulated (PWM) inverter fed induction machine based electric drive is very popular drive system. Typically, an LC filter is place between PWM inverter and the machine. This may cause instability due to increased order and poor controller design. To design a stable control law, this paper presents the model of the system using port-controlled Hamilton model approach. This model is further used to define a passivity-based control (PBC) law which guarantees a stable system. The proposed control law is simulated to verify the proposed PBC law.

Control of Induction Motor Drives –Technological Advancements

The induction motor (IM) with variable frequency AC inverter is widely used in industrial applica... more The induction motor (IM) with variable frequency AC inverter is widely used in industrial applications which require good dynamic and steady state performance over a wide range of speed. Scalar control has always been inaccurate and gives poor dynamic performance due of the coupling between variables. Vector control by rotor flux orientation drives the machine analogous to a DC machine and offers good dynamic performance for a wide range of application. However, the dynamic performance is dependent over the precise measurement of rotor flux, torque and speed. Direct torque control (DTC) on the other hand reduces the complexity of speed measurement, but requires flux and torque estimation. In this paper, industrial benefits and problems of DTC method has been discussed and reviewed with the latest improved available solutions of such problems. The problem of real time flux estimation over wide range can be overcome by using sensorless control of IM. In this paper estimation technique...

Synchronous motor drives

Modeling, Simulation and Control of Electrical Drives

This chapter deals with the development of model, simulation and hardware implementation of the s... more This chapter deals with the development of model, simulation and hardware implementation of the synchronous motor (SM) drive under various operating conditions. In the modeling of vector-controlled PMSM drive, the complete model of the SM drive system is developed for different types of speed controllers with a view to improving the performance of the drive. The simulations of PMSM drive are carried out in MATLAB ® environment with Power System Blockset (PSB) and fuzzy logic control (FLC) toolboxes. The hardware of vector-controlled PMSM drive system includes control circuit, interfacing circuit and the power circuit. The control circuit is implemented in DSP ADMC401 and the power circuit consists of the voltage source inverter (VSI) and the PMSM. The interfacing circuit is required for feedback signals in the form of motor winding currents and position as well as rotational speed of the rotor. The DSP-based software algorithm is used to obtain the performance of the drive for starting, speed reversal, load perturbation and steady-state response for different types of closed-loop speed controllers. The simulated results are presented in this chapter along with DSP-based implementation results of developed prototype of drive to validate both the model and the control algorithms.

Lyapunov Function based Stability Analysis of Symmetric Induction Machine

IECON 2021 – 47th Annual Conference of the IEEE Industrial Electronics Society

The induction machine is considered as the most reliable and robust electric machine and widely u... more The induction machine is considered as the most reliable and robust electric machine and widely used for various applications. The induction machine is a nonlinear system. Therefore, its operating point stability analysis can be done using the Lyapunov function approach. In this paper, a model of the induction machine is analyzed, and an approach to find a Lyapunov function for the machine is discussed. The Lyapunov function has its region-of-attraction which is also analyzed in the paper. The simulation results are shown to support analysis.

A Review of Sensor Reduction Techniques in Permanent Magnet Synchronous Motor Drives

International Journal of Power and Energy Systems

In permanent magnet synchronous motor (PMSM) drives, sensors are used to sense the position/speed... more In permanent magnet synchronous motor (PMSM) drives, sensors are used to sense the position/speed of the rotor and to sense current and voltage of the drive. These sensors are susceptible to atmospheric change and less reliable due to fragile nature. The cost of the drive is also increased to great extent with these sensors, therefore sensor elimination is very important for greater reliability and cost effectiveness of the drive. For improving the closed loop performance of this drive, it is utmost necessary to estimate the position and speed, voltage, current in the drive correctly so that high level of performance for closed loop control can be implemented. This paper presents a comprehensive review of different mechanical and electrical sensor reduction techniques. It is aimed to provide in-depth coverage of the status of different position, speed, voltage and current sensorless techniques. A classified list of more than 200 research publications on the status of mechanical sensor elimination and reduced electrical sensor operation is included for a quick reference.

Sensorless Control of Electric Drives – A Technological Review

IETE Technical Review

Electric drive without electrical and mechanical sensors is the critical obligation in most of th... more Electric drive without electrical and mechanical sensors is the critical obligation in most of the industrial applications due to its user-friendly hardware, lower maintenance, low cost, more reliability, etc. To replace the sensors, a number of schemes are employed, which extract the sensored data from the known parameters by using the machine model and/or its mechanical structure. In the past few years, researchers developed a variety of sensorless schemes for various applications by using different drives and their control algorithms to make it vigorous in any electrical, mechanical, and physical environments. In this paper, more than 275 publications were critically reviewed and the technological progression was presented for the sensorless control of electric drives by various motor control techniques. In addition to this, the review of sensorless AC drive system and its application was also studied and presented.

Frugal and Reverse Innovation for Harnessing the Business Potential of Emerging Markets — the Case of a Danish MNC

International Journal of Innovation Management

In recent years, there has been a shift in the epicenter of innovation from developed to emerging... more In recent years, there has been a shift in the epicenter of innovation from developed to emerging markets. Western multinationals are increasingly harnessing the potential of emerging markets by setting up local subsidiaries and developing frugal and reverse innovations. This study is an attempt to explore this shift and investigate the process of development of these innovations using a case study analysis approach. The study analyses the case of a technology-based Danish multinational (MNC) and explores how frugal innovations in India and China are developed. Based on nine interviews with leading R&D experts, the results provide evidence for the ongoing innovation shift and offer insights into the development of frugal products in local R&D projects. Growing traction towards reverse innovation, where MNCs are developing frugal products for global markets is also an important finding.

Five-phase five-level open-winding/star-winding inverter drive for low-voltage/high-current applications

2016 IEEE Transportation Electrification Conference and Expo, Asia-Pacific (ITEC Asia-Pacific), 2016

This paper work proposed a five-phase five-level open-/star-winding multilevel AC converter suita... more This paper work proposed a five-phase five-level open-/star-winding multilevel AC converter suitable for low-voltage/high-current applications. Modular converter consists of classical two-level five-phase voltage source inverter (VSI) with slight reconfiguration to serve as a multilevel converter for open-/star-winding loads. Elaborately, per phase of the VSI is built with one additional bi-directional switch (MOSFET/IGBT) and all five legs links to the neutral through two capacitors. The structure allows multilevel generation to five-level output with greater potential for fault tolerability under drive failure (open-winding) and per phase fault (open-/star-winding). Further, original optimal single carrier zero-shifted modulation (SCZSFM) algorithm is proposed and capable to modulate each VSI, which is equivalent to standard 5-level multilevel inverters. Set of results are provided based on numerical modeling with MATLAB/PLECS simulation software's and observed behavior shown good agreement with theoretical expectations.

A novel six level inverter for single-phase stand-alone photovoltaic system

2016 18th European Conference on Power Electronics and Applications (EPE'16 ECCE Europe), 2016

This paper proposes the fundamental-frequency modulated novel six-level inverter topology for sin... more This paper proposes the fundamental-frequency modulated novel six-level inverter topology for single-phase stand-alone photovoltaic (PV) system. It consists of a full-bridge inverter circuit with two pairs of anti-parallel connected switching devices, four diodes and three independent DC sources (PV modules) to obtain six level output. The theoretical discussion of proposed system is also supported by simulation and laboratory prototype results.

Journal of Electrical Engineering and Technology, 2008

Optimized carrier based multilevel generated modified dual three-phase open-winding inverter for medium power application

2016 IEEE Transportation Electrification Conference and Expo, Asia-Pacific (ITEC Asia-Pacific), 2016

This paper presents a novel carrier based multilevel modulation for modified dual three-phase ope... more This paper presents a novel carrier based multilevel modulation for modified dual three-phase open-winding inverter applicable for low-voltage/high-current applications. A standard three-phase voltage source inverter (VSI) is connected across the open-winding of both ends of the motor. Each VSI incorporates an additional bi-directional switching device (MOSFET/IGBT) per phase and all three legs link to the neutral of two capacitors in the power circuit. An original optimal double carrier zero-shifted five-level modulation (DCZ SFM) algorithm is also presented and is used to modulate each VSI in a similar way to a 5-level multilevel inverter. The complete model based system is simulated in Matlab/PLECS software's and set of results are presented which shows good conformity with the theoretical analysis.

The highest efficiency, fast dynamic response and high power density of permanent magnet brushles... more The highest efficiency, fast dynamic response and high power density of permanent magnet brushless (PMBL) machines are resulting in their wide spread applications. There are various type of these machines including permanent magnet synchronous motors (PMSM), permanent magnet brushless dc motors (PMBLDM) and hybrid doubly salient motors. This paper presents a comprehensive review of different configurations of PMBL machines, their rotor geometries and application potential, state of art and recent trends in PMBL machines. A classified list of more than one hundred research publications on the subject is appended for quick reference.

Permanent Magnet Flux Online Estimation Based on Zero Voltage Vector Injection

IEEE Transactions on Power Electronics, 2015

ABSTRACT

Minimum Voltage Vector Injection Method for Sensorless Control of PMSM for Low-Speed Operations

IEEE Transactions on Power Electronics, 2015

ABSTRACT

Improved power quality AC-DC flyback converter for variable speed permanent magnet synchronous motor drive

IEEE Power India Conference, 2006

This paper deals with the analysis and design of a high frequency isolated AC-DC flyback converte... more This paper deals with the analysis and design of a high frequency isolated AC-DC flyback converter in discontinuous current mode (DCM) of operation used for power quality improvement at AC mains in vector controlled permanent magnet synchronous motor (PMSM) drive. The design of the flyback converter is carried out to feed a vector controlled PMSM drive system. Modeling and simulation

IOSR Journal of Engineering, 2012

An enhancement in dynamic performance of a traditional direct torque control (DTC) drive can be a... more An enhancement in dynamic performance of a traditional direct torque control (DTC) drive can be achieved by a robust speed control algorithm while the steady state performance depends upon an efficient flux estimation algorithm. In this paper a conventional PI controller in the speed control loop is replaced by a sliding mode speed controller and a modified low pass filter based digital integration algorithm with tunable cut off frequency is proposed for flux estimation. The proposed study is investigated through simulation and experimentally validated on a test drive.