Effects of Electric Machine Parameters on Dynamics of an Isolated Wind-Diesel System

2013 ◽  
Vol 339 ◽  
pp. 586-590
Author(s):  
Chi Hsiang Lin
Keyword(s):  
Electric Machine ◽  
Induction Generator ◽  
Electromagnetic Torque ◽  
Electrical Parameters ◽  
Rotor Resistance ◽  
High Penetration ◽  
Terminal Voltage ◽  
Generator Terminal ◽  
System Frequency

In this paper, dynamics of a high-penetration, no-storage wind-diesel (HPNSWD) system subjected to line faults are studied. It is found that the effect of induction generator electrical parameters on generator electromagnetic torque, system frequency and generator terminal voltage is significant, especially the rotor resistance.

An Insightful Steady-State Performance of a Squirrel Cage Induction Generator Enhanced with STATCOM

2014 ◽  
Vol 15 (3) ◽  
pp. 205-215 ◽  
Author(s):  
Olorunfemi Ojo ◽  
Mehdy Khayamy ◽  
Mehari Bule
Keyword(s):  
Steady State ◽  
Reactive Power ◽  
Voltage Source ◽  
Induction Generator ◽  
Squirrel Cage ◽  
Steady State Operation ◽  
Terminal Voltage ◽  
Squirrel Cage Induction Generator ◽  
Generator Terminal ◽  
Static Compensator

Abstract This paper presents the regulation of the terminal voltage and reactive power of a grid-connected squirrel cage induction generator. A shunt connected voltage source inverter (VSI) with a capacitor in the DC side operating as a Static Compensator (STATCOM) and a shunt capacitor are used for regulating the generator terminal voltage and limit the reactive power demand from the grid. Simulation results for steady-state operation for a wide variation of speed in the super-synchronous region are presented as well as the dynamic stability of the system. Closed-form steady-state characteristics equations for the system are used to determine key variables and to demonstrate how the operation of the system depends on various parameters. This characteristics curve which contains all of the equations of the system provides the all in one insightful view to the inherent characteristics of the system and the effect of the parameter variation on the terminal voltage plane.

scholarly journals Terminal Voltage and Output Power Control of Induction Generator by Series and Parallel Compensation Using SMES

2003 ◽  
Vol 123 (12) ◽  
pp. 1522-1530 ◽  
Author(s):  
Tomonobu Senjyu ◽  
Tatsuto Kinjyo ◽  
Katsumi Uezato ◽  
Hideki Fujita
Keyword(s):  
Power Control ◽  
Output Power ◽  
Induction Generator ◽  
Terminal Voltage

STATCOM Based Solid State Voltage Regulation for Isolated Self-Excited Induction Generator

2016 ◽  
pp. 147-183
Author(s):  
Pallavi Thakkur ◽  
Smita Shandilya
Keyword(s):  
Solid State ◽  
Reactive Power ◽  
Low Cost ◽  
Voltage Regulation ◽  
Induction Generator ◽  
Terminal Voltage ◽  
Resistive Loads ◽  
Static Compensator ◽  
Self Protection ◽  
Generating System

Self-Excited Induction Generator (SEIG) offers many advantages such as low cost, simplicity, robust construction, self-protection against faults and maintenance free in today's renewable energy industry. However, the SEIG demands an external supply of reactive power to maintain the constant terminal voltage under the varying loading conditions, which limits the application of SEIG as a standalone power generator. The regulation of speed and voltage does not result in a satisfactory improvement although several studies have been emphasized on this topic in the past. To improve the performance of the SEIG system in isolated areas and to regulate the terminal voltage STATic COMpensator (STATCOM) has been modelled and developed in this dissertation. The STATCOM consists of AC inductors, a DC bus capacitor and solid-state self-commutating devices. The ratings of these components are quite important for designing and controlling of STATCOM to maintain the constant terminal voltage. The proposed generating system is modelled and simulated in MATLAB along with Simulink and sim power system block set toolboxes. The simulated results are presented to demonstrate the capability of an isolated power generating system for feeding three-phase resistive loads.

scholarly journals Genetic Algorithm Based Control System Design of a Self-Excited Induction Generator

10.14311/812 ◽  
2006 ◽  
Vol 46 (2) ◽  
Author(s):  
A.-F. Attia ◽  
H. Soliman ◽  
M. Sabry
Keyword(s):  
Genetic Algorithm ◽  
Power Control ◽  
Reactive Power ◽  
Dynamic Performance ◽  
Input Power ◽  
The Self ◽  
Induction Generator ◽  
Reactive Control ◽  
Wind Energy Conversion ◽  
Terminal Voltage

This paper presents an application of the genetic algorithm (GA) for optimizing controller gains of the Self-Excited Induction Generator (SEIG) driven by the Wind Energy Conversion Scheme (WECS). The proposed genetic algorithm is introduced to adapt the integral gains of the conventional controllers of the active and reactive control loop of the system under study, where GA calculates the optimum value for the gains of the variables based on the best dynamic performance and a domain search of the integral gains. The proposed genetic algorithm is used to regulate the terminal voltage or reactive power control, by adjusting the self excitation, and to control the mechanical input power or active power control by adapting the blade angle of WECS, in order to adjust the stator frequency. The GA is used for optimizing these gains, for an active and reactive power loop, by solving the related optimization problem. The simulation results show a better dynamic performance using the GA than using the conventional PI controller for active and reactive control.

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