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The IUP Journal of Electrical and Electronics Engineering:
Performance Analysis of Three-Phase
Self-Excited Induction Generator Using DSTATCOM†
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The paper presents the control of a Self-Excited Induction Generator (SEIG) using DSTATCOM. The performance of the DSTATCOM depends on the extraction of the reference source currents. For this purpose, the control strategy adopted is Instantaneous Reactive Power (IRP) theory which is implemented using MATLAB/SIMULINK. The generation of the Pulse Width Modulation (PWM) pulses triggers the IGBT of the Voltage Source Inverter (VSI)-based DSTATCOM. This is achieved using ARDUINO DUE, a 32-bit ARM core microcontroller interfaced with MATLAB/SIMULINK. The performance of the SEIG is analyzed experimentally in a hardware prototype to evaluate the effect of DSTATCOM. It is observed that SEIG with DSTATCOM provides voltage sag mitigation, reactive power compensation and power factor improvement.

 
 

The depletion of conventional sources of energy and their unavailability in remote areas has led to alternate generation of electricity through renewable sources of energy. Induction generators are popularly used for such applications. An induction generator continuously requires reactive power for its excitation. This can be obtained from an external power source (grid) termed as externally excited induction generator or from a capacitor bank connected at the stator terminals of induction generator known as Self-Excited Induction Generator (SEIG). This offers advantages like low cost, brushless construction, high torque/weight ratio, robustness, less maintenance and inherent short circuit protection (Chikte and Mahajan, 2016).
Poor voltage regulation is the main drawback of a SEIG. The terminal voltage of the induction generator continuously alters under varying load conditions and needs to be regulated. For this, DSTATCOM is used. It is effectively used for reactive power compensation, power factor improvement and voltage regulation in the distribution system.

 
 
 

Electrical and Electronics Engineering Journal,ARDUINO DUE, DSTATCOM, Instantaneous Reactive Power (IRP) theory, Self-Excited Induction Generator (SEIG)