Journal ArticleDOI
Terminal voltage regulation characteristics by static var compensator for a three-phase self-excited induction generator
TLDR
In this paper, a three-phase self-excited induction generator (SEIG) with squirrel-cage rotor is presented along with its operating performance evaluations for small-scale clean renewable and alternative energy utilizations.Abstract:
In this paper, the practical impedance approach steady-state analysis in the frequency domain for the three-phase self-excited induction generator (SEIG) with squirrel-cage rotor is presented along with its operating performance evaluations. The three-phase SEIG is driven by a variable-speed prime mover(VSPM) in addition to a constant-speed prime mover (CSPM) such as a wind turbine and a micro gas turbine for clean alternative renewable energy in rural areas. The basic steady-state characteristics of the VSPM are considered in the three-phase SEIG approximate equivalent circuit and the operating performance of the three-phase SEIG coupled with a VSPM and/or a CSPM are evaluated and discussed online under the conditions related to the speed changes of the prime mover and the electrical inductive load power variations with simple computation processing procedures. A three-phase SEIG prototype setup with a VSPM is implemented for small-scale clean renewable and alternative energy utilizations. The experimental performance results give good agreement with those obtained from the simulation results. Furthermore, a proportional-integral (PI) closed-loop feedback voltage regulation of the three-phase SEIG driven by the VSPM on the basis of the static var compensator (SVC) composed of the thyristor phase-controlled reactor in parallel with the thyristor switched capacitor and the fixed-excitation capacitor bank is designed and considered for the wind generation as a renewable power conditioner. The simulation analysis and experimental results obtained from the three-phase SEIG with SVC for its voltage regulation prove the practical effectiveness of the additional SVC with the PI-controller-based feedback loop in steady-state operation in terms of high performance with low cost.read more
Citations
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Book ChapterDOI
Conversion Wind System Overview
TL;DR: In this paper, the authors present the global structure of a conversion wind system and the main meteorological elements, the wind velocity, and electrical generators used in wind energy conversion system (WCES).
Proceedings ArticleDOI
Voltage and frequency stabilization system with self-excited induction generator
A. Kasprowicz,K. Tomczuk +1 more
TL;DR: In this article, a self-exciting induction generator system has been presented for small hydroelectric and wind power plants, where the generator is not connected with distribution system and represents an autonomous system.
Proceedings ArticleDOI
Theoretical implementation of a novel isolated three-phase induction generator with controllable output voltage using a three-phase four-switch STATCOM
Ehsan Jafari,Ali Marjanian +1 more
TL;DR: In this paper, an isolated three-phase induction generator with fixed frequency and controllable output voltage using a three phase four-switch Static Synchronous Compensator (STATCOM) with space vector modulation (SVM) switch technique is presented.
Journal ArticleDOI
Modeling of an isolated induction generator considering saturation effect
TL;DR: In this article , a self-excited induction generator model with saturation effect for power generating mode in a remote site is proposed, which is led through the space vector mathematical formalism and allows one to analyze the steady and dynamic states.
Proceedings ArticleDOI
An improved control strategy of self excited induction generator taking magnetization nonlinearity
TL;DR: In this paper, a control strategy involving supply of reactive power to the generator partially through fixed capacitor bank connected at the stator terminals and switched dc power source is proposed for constant voltage and constant frequency operation.
References
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Static var compensator models for power flow and dynamic performance simulation
C.W. Taylor,G. Scott,A. Hammad +2 more
TL;DR: In this article, the static var compensator is now mature technology that is widely used for transmission applications and a standardization of basic models is recommended, and is recommended in this paper.
Journal ArticleDOI
The dynamic characteristics of an isolated self-excited induction generator driven by a wind turbine
TL;DR: In this article, the effect of magnetizing inductance on self-excitation was discussed and the loading analysis of an isolated induction generator, and how the operating frequency and generated voltage were affected by the change in operating slip value for regulated and unregulated rotor speed.
Journal ArticleDOI
Capacitance requirement for isolated self-excited induction generator
TL;DR: In this article, the authors derived the minimum capacitance required for self-excitation and the output frequencies under no-load, inductive and resistive loads, and showed that there is a speed threshold below which no excitation is possible no matter what the capacitance value.
Journal ArticleDOI
Static Exciters for Induction Generators
TL;DR: In this article, a simple exciter scheme based on using a static reactive power generator implemented with fixed capacitors and thyristor controlled inductors is proposed. But the feasibility of the proposed scheme with naturally commutated thyristors is verified by measurements on a test setup employing a standard 15-hp induction motor.
Journal ArticleDOI
Voltage-frequency control of a self-excited induction generator
E. Suarez,G. Bortolotto +1 more
TL;DR: In this article, a new strategy for controlling voltage and frequency of a self-excited induction generator (SEIG) is presented, which operates in the linear region of the core magnetizing curve, so that efficiency and performance are upgraded.