Voltage and Frequency Control of Variable Speed Induction Generator using One Cycle Control Technique

2015 ◽  
Vol 6 (4) ◽  
pp. 723
Author(s):  
T. Elango ◽  
A.Senthil Kumar
Keyword(s):  
Frequency Control ◽  
Pi Controller ◽  
Control Technique ◽  
Induction Generator ◽  
Variable Speed ◽  
Zero Crossing ◽  
Power Generator ◽  
Induction Generators ◽  
Wind Power Generator ◽  
Electronic Load

Induction generators are widely used to extract the energy from renewable sources, particularly as a wind power generator either grid connected or isolated operation. The problem associated with stand-alone mode operation is voltage and frequency control. An electronic load controller is used for frequency / voltage control. It uses PI controller to generate the gating signal for the DC chopper. This method has the fault of bad dynamic response and thedistortion of output voltage at zero-crossing. To overcome the defect of PI controller when steady state error is equal to zero, a one cycle control technique suggested and implemented. Simulation of wind driven self-excited induction generator (SEIG) performance is studied and results are discussed.

scholarly journals Fuzzy Algorithm for Supervisory Voltage/Frequency Control of a Self Excited Induction Generator

10.14311/898 ◽  
2006 ◽  
Vol 46 (6) ◽  
Author(s):  
Hussein F. Soliman ◽  
Abdel-Fattah Attia ◽  
S. M. Mokhymar ◽  
M. A. L. Badr
Keyword(s):  
Fuzzy Logic Controller ◽  
Fuzzy Controller ◽  
Frequency Control ◽  
Dynamic Performance ◽  
Pi Controller ◽  
Induction Generator ◽  
Wind Energy Conversion ◽  
Voltage Frequency ◽  
Terminal Voltage ◽  
Rising Time

This paper presents the application of a Fuzzy Logic Controller (FLC) to regulate the voltage of a Self Excited Induction Generator (SEIG) driven by Wind Energy Conversion Schemes (WECS). The proposed FLC is used to tune the integral gain (KI) of a Proportional plus Integral (PI) controller. Two types of controls, for the generator and for the wind turbine, using a FLC algorithm, are introduced in this paper. The voltage control is performed to adapt the terminal voltage via self excitation. The frequency control is conducted to adjust the stator frequency through tuning the pitch angle of the WECS blades. Both controllers utilize the Fuzzy technique to enhance the overall dynamic performance.  The simulation result depicts a better dynamic response for the system under study during the starting period, and the load variation. The percentage overshoot, rising time and oscillation are better with the fuzzy controller than with the PI controller type. 

Steady State Analysis Operation of Self-Excited Wound Rotor Induction Generator Under Constant Frequency and Tolerated Output Voltage

2016 ◽  
Vol 25 (06) ◽  
pp. 1650060 ◽  
Author(s):  
Selmi Mourad ◽  
Rehaoulia Habib
Keyword(s):  
Output Voltage ◽  
Frequency Control ◽  
Induction Generator ◽  
Prime Mover ◽  
Constant Frequency ◽  
Suitable Candidate ◽  
Wind Energy Conversion ◽  
Induction Generators ◽  
Rotor Resistance ◽  
The Poor

Self-excited induction generators (SEIG) are found to be most suitable candidate for wind energy conversion application required at remote windy locations. The major drawbacks of these generators are the poor voltage and frequency control under load and prime mover speed perturbations. In this paper, an attempt has been made to optimize the control strategy under various load and prime mover conditions, of the self-excited wound rotor induction generator (SEWRIG). By tolerating a slight deviation of the output voltage and ensuring a constant frequency with an adequate external rotor resistance, only four values of excitation capacitor are required for the whole range of operation. The effectiveness of the adopted strategy has been confirmed by comparing on a 0.8-[Formula: see text]kW wound rotor induction generator the simulated results to the corresponding obtained with an experimental test. A close agreement between the computed and experimental results confirms the efficiency of the adopted method.

Research on the Technology of No-Load Cutting-in Control of Doubly Fed Induction Wind-Power Generator Based-on Fussy PI Controller

2010 ◽  
Vol 171-172 ◽  
pp. 421-424
Author(s):  
Xiu He Lu ◽  
Yong Qiang Wei
Keyword(s):  
Dynamic Response ◽  
Wind Power ◽  
Fuzzy Controller ◽  
Pi Controller ◽  
Power Generator ◽  
Strong Robustness ◽  
Wind Power Generator ◽  
Fuzzy Pi Controller ◽  
Doubly Fed ◽  
Fast Dynamic

The methods of vector transform and PI controller are used in no-load cutting-in control scheme of the system of doubly fed induction wind power generator, but the control methods depend on the parameters of electronic machine strongly. For raising the steady of wind power generating system, this paper designs a fuzzy PI controller which with strong robustness and fast dynamic response of fuzzy controller and better steady precision of PI controller. The result of simulation indicates that the fuzzy PI controller not only shorts the process of no-load cutting-in, but also has strong robustness and fast dynamic response, it is an ideal cutting-in control strategy.

Decoupled Electronic Load Controller for Offgrid Induction Generators in Small Hydro Power Generation

2011 ◽  
Vol 12 (1) ◽  
Author(s):  
Veeramalla Raja Gopal ◽  
Bhim Singh
Keyword(s):  
Power Plants ◽  
Voltage Source ◽  
Induction Generator ◽  
Voltage Source Converter ◽  
Hydroelectric Power ◽  
Generator System ◽  
Induction Generators ◽  
Three Phase ◽  
Dc Bus ◽  
Electronic Load

The control of voltage and frequency is one of the prime concerns in small off-grid hydroelectric power plants located in remote and inaccessible places. Induction generators are prime contenders for such applications which are robust, require less maintenance and have low cost. This paper deals with an implementation of a decoupled electronic load controller (DELC) for a three-phase induction generator (IG) system in standalone applications. The DELC is a combination of a static synchronous compensator (STATCOM) and conventional electronic load controller (ELC). The STATCOM consists of three-phase insulated gate bipolar transistor (IGBT) based current controlled voltage source converter (CC-VSC) with a dc bus capacitor and an ELC consists of an IGBT based chopper and an auxiliary load on the dc bus of the diode bridge rectifier. An Icos? based control algorithm is used in DELC to regulate terminal voltage and frequency, suppress harmonics and to provide load balancing. Test results are presented under balanced/unbalanced nonlinear loads to demonstrate the effectiveness of the DELC for an induction generator system.

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