Performance analysis of electronic power transformer based on neuro-fuzzy controller
Hakan Acikgoz1, O Fatih Kececioglu2, Ceyhun Yildiz2
1Department of Electrical Science, Kilis 7 Aralik University, Kilis, 79000 Turkey.
Springerplus
|September 3, 2016
Summary
This study introduces an advanced electronic power transformer (EPT) using neuro-fuzzy controllers for enhanced power system stability and faster disturbance response. The novel design improves dynamic performance over traditional controllers.
Area of Science:
- Electrical Engineering
- Power Electronics
- Control Systems
Background:
- Electronic power transformers (EPTs), or solid-state transformers, are increasingly replacing conventional transformers.
- EPTs offer advantages like high power factor, low harmonic distortion, and voltage regulation.
- Conventional PI controllers may limit dynamic performance in EPTs.
Purpose of the Study:
- To propose a novel EPT structure with enhanced dynamic performance.
- To improve power system stability and response to disturbances using advanced controllers.
- To evaluate the compensation capabilities of the proposed EPT for power quality issues.
Main Methods:
- A three-phase PWM rectifier, dual active bridge converter, and three-phase inverter form the EPT structure.
- Neuro-fuzzy controllers are implemented in the input and isolation stages to replace PI controllers.
- Simulations in MATLAB/Simulink are used to verify the design and analyze performance.
Main Results:
- The proposed EPT structure with neuro-fuzzy controllers demonstrates improved stability and faster response.
- Simulations confirm the effectiveness of the EPT in compensating voltage harmonics, flicker, and sag/swell.
- The neuro-fuzzy controllers exhibit durable and nonlinear control characteristics.
Conclusions:
- The developed EPT structure with neuro-fuzzy controllers offers superior dynamic performance compared to conventional designs.
- The EPT effectively enhances power system stability and provides robust compensation for power quality disturbances.
- This advanced EPT design holds significant potential for modern power systems.
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