Refine your search
Collections
Year
A B C D E F G H I J K L M N O P Q R S T U V W X Y Z All
Pahwa, Vivek
- Optimum MPPT Technique for the PV based Field Oriented Control of Induction Motor Feeding Centrifugal Pump
Abstract Views :153 |
PDF Views:0
Authors
Affiliations
1 Department of Electrical and Electronics Engineering, University Institute of Engineering and Technology, Panjab University, Chandigarh - 160014, Punjab, IN
1 Department of Electrical and Electronics Engineering, University Institute of Engineering and Technology, Panjab University, Chandigarh - 160014, Punjab, IN
Source
Indian Journal of Science and Technology, Vol 9, No 44 (2016), Pagination:Abstract
Objectives: To develop and analyze isolated photovoltaic based water pumping system employing Field Oriented Controlled (FOC) three-phase squirrel cage Induction Motor (IM) which in turn is used to run the centrifugal pump. To extract the maximum power from the solar panel during all conditions, Maximum Power Point Tracker (MPPT) has to be implemented. Method/Analysis: FOC-IM of 5th order differential equations have been solved using Runga Kutta Method for integration with dq axis in rotor reference frame in MATLAB/Simulink environment. The two MPPT techniques are based on calculations of the instantaneous values of the voltage and current of the PV cell. The Perturb and Observe (P&O) technique is based on the value of perturbation and the Incremental Conductance (INC) technique is implemented using the value of the Incremental Conductance. Findings: The power generation from various renewable energy sources is becoming popular because of greater efficiency and depletion of non renewable energy sources. In this paper, an isolated photovoltaic based model is considered which can be suitable for the remote areas where there is no grid connectivity. From the exhaustive study of literature, it is found that very few authors have worked on induction motor and that too employing FOC for PV based model. The characteristics of the Induction Motor are such that it draws high inrush current at starting. The peak power ratings of the inverters and converters depend on this starting current in such finite PV based sources. This ultimately leads to the high cost of the whole system. The analysis to this problem has not been discussed yet, which is an important concern in the field of PV based electric motor drives. This work is incorporated to achieve this objective. Novelty/Improvement: The whole developed model is analyzed using the two MPPT techniques viz Incremental Conductance and Perturb and Observe MPPT. The problem of starting current in the motor and the distortions in the torque deviations are highly dependent on the choice of MPPT. So keeping in view of the above two problems, the optimum MPPT technique has been stated in this work.Keywords
Centrifugal Pump, Field Oriented Control (FOC), Incremental Conductance (INC), Induction Motor (IM), Maximum Power Point Technique (MPPT), Photovoltaic System (PV), Perturb and Observe (P&O).- Enhanced Performance of Isolated Wind-Diesel (IWD) Hybrid System feeding Heavy Load under various Operating Conditions
Abstract Views :140 |
PDF Views:0
Authors
Narinder Kaur
1,
Vivek Pahwa
1
Affiliations
1 Department of Electrical and Electronics Engineering, University Institute of Engineering and Technology, Panjab University, Chandigarh - 160014, Punjab, IN
1 Department of Electrical and Electronics Engineering, University Institute of Engineering and Technology, Panjab University, Chandigarh - 160014, Punjab, IN
Source
Indian Journal of Science and Technology, Vol 9, No 40 (2016), Pagination:Abstract
Objectives: To check /validate the stiffness of IW-D Hybrid System by putting heavy load of 150 hp at various loading conditions. And, to implement the remedies to the ill-conditions/operating conditions like frequency runaway and varying wind speed and to study the effect of these conditions on overall system as well as on heavy load. Further, to improve system performance, a suitable controller is to be incorporated with pitch angle control system. Method/Statistical Analysis: The electromechanical dynamics of various large electrical machines are represented by their full order models. The models of synchronous machine (7th order) of diesel genset, SEIG (5th order) and heavy load (5th order) are simulated to obtain power and voltage dynamics. The system dynamics consist of higher order differential equations, which are solved by converting into simpler algebraic equations related to current and voltage that are solved in short time by using phasor simulation in MATLAB/Simulink environment. Findings: The hybrid power systems are becoming popular because of greater efficiency and balance of energy supply. Due to many advantages like ruggedness, inexpensiveness and requirement of less maintenance in contrast to other electrical machines, heavy load like 3-ϕ squirrel cage induction motor that shares a major part of the total electrical portion on any power system. From the exhaustive study of, it is found that very few authors have worked on such system and the performance of the heavy load is either not considered of if taken into account it is not considered in detail. In this paper, an IW-D Hybrid Power System feeding heavy load is considered to analyze/ check the stiffness of IW-D Hybrid System. Few ill-conditions like frequency runaway and varying wind speed affects the system functioning and have considerable impact on the heavy load is reported in few papers but its remedy is not implemented or if given, the ill effect of these problems on the heavy load is not considered which needs great attention. Therefore, the solutions of above problems are mentioned in this work. Application/Improvement: The dynamic performance of modified IW-D Hybrid System has been validated and checked in context with ruggedness by putting heavy load of 150 hp at normal and overload condition. The dynamic behavior of IW-D System as well as heavy load has been improved for frequency runaway. Further, a PI controller including pitch servo is implemented to control the output of SEIG driven by wind turbine in case of varying wind speed, which improves the dynamic performance of the system.Keywords
Diesel Genset, Dummy Load, Excitation Capacitor, Heavy Load (3-Φ Squirrel Cage Induction Motor), Hybrid System, Isolated Wind-Diesel (IW-D) Self Excited Induction Generator (SEIG), Static Load.- Mitigation of SSR with STATCOM using Subsynchronous Damping Controller on Series-Compensated Transmission Line
Abstract Views :140 |
PDF Views:0
Authors
Affiliations
1 Department of Electrical and Electronics Engineering, UIET, Panjab University, Chandigarh, IN
1 Department of Electrical and Electronics Engineering, UIET, Panjab University, Chandigarh, IN