Papers by Gowri Ganesh
This paper presents comprehensive study on performance comparison of different photovoltaic techn... more This paper presents comprehensive study on performance comparison of different photovoltaic technologies, when subjected to five distinct proportions of temperature and humidity in a controlled environment under biasing conditions. The study considers five different PV (Photovoltaic) technologies (Mono, Multi, a-Si, CdTe, CIGS) based on their electrical parameters. It is observed that CIGS (Copper Indium Gallium Selenide) performs with best efficiency at 60 °C, 60% RH (relative humidity) while CdTe performs with best efficiency at 85 °C, 85% RH.
The descriptive statistics shows that the largest possible Variance in Maximum Power of a-Si out of all available technologies is about 20.85 whereas the lowest noted in Mono C-Si is 0.917. The variability of data is further checked using Analysis of Variance tool. Finally the study establishes the performance dominance of C-Si (Mono) technology over all the thin film technologies based on stress tests and evaluation through the repeated measurement of maximum Power, module efficiency and cell efficiency.
The world’s wind resource is abundant, and has great development potential. In the traditional lo... more The world’s wind resource is abundant, and has great development potential. In the traditional low rated wind generator, the mechanical friction
resistance between the bearings is too large, due to low wind speed in the city, usually it can’t start up when the wind speed is not big enough, whereas the
high rated ones produce lot of noise. In both cases the AMBs can be used to overcome their problems. Magnetic bearing is a mechanical and electrical
integration bearing which suspends and stabilizes the rotor with the electromagnetic force, compared with the general bearings, for no mechanical friction,
the damping of small wind generator with AMB can be minimized; power consumption is about 1/10 of ordinary bearings, which makes the wind generator
start up with low-speed wind. Active Magnetic Bearings (AMB) have many advantages such as no friction loss, no abrasion, lubrication free quality, and
used for high rotational speed applications. A complete AMB system consists of an actuator, power amplifier, a rotor position sensor and a control system. In
this paper, a closed loop decentralized Fuzzy Logic controller for Active magnetic Bearings is designed. For the numerical evaluation of control algorithm a
MIMO (multiple input multiple output) mathematical model of the controlled plant is determined. The AMB system which is open-loop unstable and highly
coupled due to nonlinearities inherited in the system such as gyroscopic effect and mass imbalance requires dynamic controller that can stabilize the system.
The majority of industrial applications of active magnetic bearings were still based on conventional PID control system. The proposed control design is based
on rule based procedure. It has been shown, that the presented FL control guarantees satisfactory high damping, low parameter variations and measurement
noise of the overall system. The designed FL controller is able to maintain the rotor in centre position in the final steady state. Simulations are provided to
illustrate the performance of the controller. This Paper deals with developing a model of an Active Magnetic Bearing (AMB), and its 1-DOF, 2-DOF, 4-DOF
model using a Fuzzy controller. The effectiveness of the proposed controller is compared with the conventional PID controller.
Journal of Electrical Engineering, Jun 2015
In this paper, a standalone Hybrid power generation
system with improved power quality is propos... more In this paper, a standalone Hybrid power generation
system with improved power quality is proposed. The proposed
system consisting of Wind energy conversion system (WECS),
Diesel generator system, PV generation system and Battery
energy storage system (BESS).A hybrid system consists of wind,
solar PV, diesel generator, battery, and a controller. Tip Speed
Ratio (TSR) control with Field Oriented Control (FOC), method
was used for implementing Maximum Power Point Tracking
(MPPT) for wind system, variable step Perturb & Observing
(P&O) method for solar and optimum fuel consumption
technique for Diesel engine. MATLAB/Simulink was used to
build the model and simulate the system. The result shows the
better performance of the system under the variation of input
constraints as well as output constraints.
Conference Presentations by Gowri Ganesh
/Summary: PV Technologies having same power rating with different configuration are selected for ... more /Summary: PV Technologies having same power rating with different configuration are selected for this study. Insulation Test is performed for 2 minutes at 1000 V on the modules which are kept in the environmental chamber. A Temperature dosage in the increments of 10°C, ranging from 10°C to 80°C is applied on the modules. The insulation resistance, leakage current, Dielectric Absorption ratio and capacitance readings were noted down at each interval. All the modules have fulfilled the criteria of IEC 61215, IEC 61646. From the Observations, it was found that the insulation resistance decreases with increase in temperature. In addition to that, a generalized model of insulation of PV module in terms of resistance and capacitance was built and simulated.
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Papers by Gowri Ganesh
The descriptive statistics shows that the largest possible Variance in Maximum Power of a-Si out of all available technologies is about 20.85 whereas the lowest noted in Mono C-Si is 0.917. The variability of data is further checked using Analysis of Variance tool. Finally the study establishes the performance dominance of C-Si (Mono) technology over all the thin film technologies based on stress tests and evaluation through the repeated measurement of maximum Power, module efficiency and cell efficiency.
resistance between the bearings is too large, due to low wind speed in the city, usually it can’t start up when the wind speed is not big enough, whereas the
high rated ones produce lot of noise. In both cases the AMBs can be used to overcome their problems. Magnetic bearing is a mechanical and electrical
integration bearing which suspends and stabilizes the rotor with the electromagnetic force, compared with the general bearings, for no mechanical friction,
the damping of small wind generator with AMB can be minimized; power consumption is about 1/10 of ordinary bearings, which makes the wind generator
start up with low-speed wind. Active Magnetic Bearings (AMB) have many advantages such as no friction loss, no abrasion, lubrication free quality, and
used for high rotational speed applications. A complete AMB system consists of an actuator, power amplifier, a rotor position sensor and a control system. In
this paper, a closed loop decentralized Fuzzy Logic controller for Active magnetic Bearings is designed. For the numerical evaluation of control algorithm a
MIMO (multiple input multiple output) mathematical model of the controlled plant is determined. The AMB system which is open-loop unstable and highly
coupled due to nonlinearities inherited in the system such as gyroscopic effect and mass imbalance requires dynamic controller that can stabilize the system.
The majority of industrial applications of active magnetic bearings were still based on conventional PID control system. The proposed control design is based
on rule based procedure. It has been shown, that the presented FL control guarantees satisfactory high damping, low parameter variations and measurement
noise of the overall system. The designed FL controller is able to maintain the rotor in centre position in the final steady state. Simulations are provided to
illustrate the performance of the controller. This Paper deals with developing a model of an Active Magnetic Bearing (AMB), and its 1-DOF, 2-DOF, 4-DOF
model using a Fuzzy controller. The effectiveness of the proposed controller is compared with the conventional PID controller.
system with improved power quality is proposed. The proposed
system consisting of Wind energy conversion system (WECS),
Diesel generator system, PV generation system and Battery
energy storage system (BESS).A hybrid system consists of wind,
solar PV, diesel generator, battery, and a controller. Tip Speed
Ratio (TSR) control with Field Oriented Control (FOC), method
was used for implementing Maximum Power Point Tracking
(MPPT) for wind system, variable step Perturb & Observing
(P&O) method for solar and optimum fuel consumption
technique for Diesel engine. MATLAB/Simulink was used to
build the model and simulate the system. The result shows the
better performance of the system under the variation of input
constraints as well as output constraints.
Conference Presentations by Gowri Ganesh
The descriptive statistics shows that the largest possible Variance in Maximum Power of a-Si out of all available technologies is about 20.85 whereas the lowest noted in Mono C-Si is 0.917. The variability of data is further checked using Analysis of Variance tool. Finally the study establishes the performance dominance of C-Si (Mono) technology over all the thin film technologies based on stress tests and evaluation through the repeated measurement of maximum Power, module efficiency and cell efficiency.
resistance between the bearings is too large, due to low wind speed in the city, usually it can’t start up when the wind speed is not big enough, whereas the
high rated ones produce lot of noise. In both cases the AMBs can be used to overcome their problems. Magnetic bearing is a mechanical and electrical
integration bearing which suspends and stabilizes the rotor with the electromagnetic force, compared with the general bearings, for no mechanical friction,
the damping of small wind generator with AMB can be minimized; power consumption is about 1/10 of ordinary bearings, which makes the wind generator
start up with low-speed wind. Active Magnetic Bearings (AMB) have many advantages such as no friction loss, no abrasion, lubrication free quality, and
used for high rotational speed applications. A complete AMB system consists of an actuator, power amplifier, a rotor position sensor and a control system. In
this paper, a closed loop decentralized Fuzzy Logic controller for Active magnetic Bearings is designed. For the numerical evaluation of control algorithm a
MIMO (multiple input multiple output) mathematical model of the controlled plant is determined. The AMB system which is open-loop unstable and highly
coupled due to nonlinearities inherited in the system such as gyroscopic effect and mass imbalance requires dynamic controller that can stabilize the system.
The majority of industrial applications of active magnetic bearings were still based on conventional PID control system. The proposed control design is based
on rule based procedure. It has been shown, that the presented FL control guarantees satisfactory high damping, low parameter variations and measurement
noise of the overall system. The designed FL controller is able to maintain the rotor in centre position in the final steady state. Simulations are provided to
illustrate the performance of the controller. This Paper deals with developing a model of an Active Magnetic Bearing (AMB), and its 1-DOF, 2-DOF, 4-DOF
model using a Fuzzy controller. The effectiveness of the proposed controller is compared with the conventional PID controller.
system with improved power quality is proposed. The proposed
system consisting of Wind energy conversion system (WECS),
Diesel generator system, PV generation system and Battery
energy storage system (BESS).A hybrid system consists of wind,
solar PV, diesel generator, battery, and a controller. Tip Speed
Ratio (TSR) control with Field Oriented Control (FOC), method
was used for implementing Maximum Power Point Tracking
(MPPT) for wind system, variable step Perturb & Observing
(P&O) method for solar and optimum fuel consumption
technique for Diesel engine. MATLAB/Simulink was used to
build the model and simulate the system. The result shows the
better performance of the system under the variation of input
constraints as well as output constraints.