Analysis of Saturated Self-Excited Dual Stator Induction Generator for Wind Energy Generation

2015 ◽  
Vol 24 (09) ◽  
pp. 1550129 ◽  
Author(s):  
Marwa Ben Slimene ◽  
Mohamed Arbi Khlifi ◽  
Mouldi Ben Fredj ◽  
Habib Rehaoulia
Keyword(s):  
Power Generation ◽  
Experimental Study ◽  
Transient Behavior ◽  
Operating Conditions ◽  
Induction Generator ◽  
Magnetic Saturation ◽  
Wind Energy Generation ◽  
Three Phase ◽  
Mutual Leakage Reactance ◽  
Power Generation Systems

This paper presents the modeling of saturated dual stator induction generator (DSIG) for analysis of its transient and dynamic behavior for stand-alone operation. In the analytical model, the effect of common mutual leakage reactance between the two three-phase winding sets and the cross saturation have been considered. For this purpose, a detailed description of a procedure to introduce magnetic saturation in found models is presented. Paper also discusses the possibility of DSIG for supplying two individual loads by presenting the results of analytical and experimental study of transient behavior under various operating conditions. Use of such models leads to more accurate predictions in industrial drives, especially wind driven power generation systems. This is verified by experimental lab tests.

Transient Behavior Analysis of Induction Generator at Three-Phase Fault Condition

2007 ◽  
Vol 8 (2) ◽  
Author(s):  
Tomonobu Senju ◽  
Ryo Kuninaka ◽  
Toshiaki Kaneko ◽  
Yoshitaka Miyazato ◽  
Atsushi Yona ◽  
...  
Keyword(s):  
Block Diagram ◽  
Transient Behavior ◽  
Induction Generator ◽  
Matlab Simulink ◽  
System Equation ◽  
Wind Generators ◽  
Induction Generators ◽  
Three Phase ◽  
Analytical Formulas ◽  
Effective Use

In recent years, renewable energy generation has been coming up for effective use of natural energy, such as wind energy. Induction generators consisting squirrel-cage rotors are widely used as wind generators because of their salient features like robust rotor design, simplicity in the construction, maintenance free operation, etc. In this paper, it is derived that the transient current, electromechanical torque, and active power taking into account rotor speed change of induction generators at three-phase fault conditions. The output equations of the induction generator has nonlinearity, and the speed-time characteristic in a fault period is also expressed by the nonlinear equation. The approximation to derive analytical formulas for transient conditions is proposed, and the transient behavior of the induction generator is analyzed by the developed equations. The simulation block diagram in MATLAB/SIMULINK is constituted using the system equation in consideration of the nonlinearity of the induction generator. The simulation results obtained from each theoretical analysis are in close agreement with that of results obtained using MATLAB/SIMULINK simulation. Furthermore, theoretical discussion also developed to determine the fault phase angle and the time at which maximum transient currents flow in the system.

The Role of Dissolved and Nascent Air in Oil-Hydraulic Systems

2000 ◽  
Author(s):  
Hansjoerg Stern
Keyword(s):  
Steady State ◽  
High Performance ◽  
Transient Behavior ◽  
Operating Conditions ◽  
Phase System ◽  
Hydraulic Systems ◽  
Three Phase ◽  
Significant Damage ◽  
Water Hydraulic

Abstract In modern, high performance hydraulic systems the transient behavior of dissolving, dissolved and nascent air under changing dynamic conditions of pressure and temperature is emerging as an increasingly important factor, capable of creating undesirable operating conditions. The paper discusses the question of how to predict the performance of pump inlets and valve discharges, where we have known for some time that cavitation and cavitation-like conditions exist and can cause significant damage. The steady state conditions at which nascent air evolves from saturated air-in-oil solutions is normally one or two orders of magnitude above the vapor pressure of the system fluid. To what extent, therefore, is “cavitation” in these systems an air-oil problem? Or is it an oil-vapor problem that is analogous to cavitation in water hydraulic pumps and turbines? Or have we created the combination of the two, a three-phase system of liquid, gas and vapor?

Steady-State and Dynamic Behavior of a Single-Phase Self-Excited Induction Generator Using a Three-Phase Machine

2007 ◽  
Vol 8 (3) ◽  
Author(s):  
S. N. Mahato ◽  
M. P. Sharma ◽  
S. P. Singh
Keyword(s):  
Steady State ◽  
Reference Frame ◽  
Single Phase ◽  
Short Circuit ◽  
Induction Machine ◽  
Transient Behavior ◽  
Experimental Results ◽  
Induction Generator ◽  
State Variables ◽  
Three Phase

This paper presents the steady-state and transient behavior of a single-phase self-excited induction generator (SEIG) using a three-phase machine with one shunt and one series excitation capacitors for resistive and inductive loads. The generation scheme consists of one three-phase delta connected induction machine and two capacitors - one connected in parallel with one winding and the other in series with a single-phase load. The dynamic model of the system has been developed as a hybrid model considering the stator phase currents in abc reference frame and the rotor currents in stationary d-q axes reference frame as state variables. The simulated and experimental results are presented for different dynamic conditions such as initiation of self-excitation, load perturbation and short-circuit. The simulated results of the steady-state analysis have been compared with the transient and experimental results and a close agreement between them indicates the accuracy and effectiveness of the approach.

Design and implementation of dynamic electronic load controller for three‐phase self‐excited induction generator in remote small‐hydro power generation

2014 ◽  
Vol 8 (3) ◽  
pp. 269-280 ◽  
Author(s):  
RajaSekhara Reddy Chilipi ◽  
Bhim Singh ◽  
Shikaripur Srinivasa Murthy ◽  
Sandeep Madishetti ◽  
Gurumoorthy Bhuvaneswari
Keyword(s):  
Power Generation ◽  
Induction Generator ◽  
Hydro Power ◽  
Design And Implementation ◽  
Three Phase ◽  
Electronic Load

Experimental study on thermoelectric modules for power generation at various operating conditions

Energy ◽  
2012 ◽  
Vol 45 (1) ◽  
pp. 874-881 ◽  
Author(s):  
Wei-Hsin Chen ◽  
Chen-Yeh Liao ◽  
Chen-I Hung ◽  
Wei-Lun Huang
Keyword(s):  
Power Generation ◽  
Experimental Study ◽  
Operating Conditions ◽  
Thermoelectric Modules
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