:: ICCAS 2015 ::

WA06		Power Systems
Time : 09:10~10:40 Room : 201		Chair : Chaewook Lim (Hanbat National University, )



09:10~09:25	WA06-1

Modeling and Simulation of Wind Power Generation System Using Diode Bridge Rectification Circuit for Converter
Sirichai Tammaruckwattana(King Mongkut’s Institute of Technology Ladkrabang, Thailand)

This paper presents the variable-speed permanent magnet synchronous generator wind power system using the diode bridge rectification circuit for the converter. The wind speed model which simulates the actual wind is investigated, and it is realized as the Simulink model. The parameters of the permanent magnet synchronous generator are measured and the generator torque characteristic using the obtained parameters is calculated. The wind turbine torque characteristic and the range of the wind speed in which the wind power system can operate is clarified by comparing with boost converter method



09:25~09:40	WA06-2

EKF-Based Fault Detection and Isolation for FET of Induction Motor Inverter
Jang ho Won(Korea tech, Korea, Republic of )

This paper proposed a new fault detection and isolation method for the IM drive inverter. In the method, the values of the on resistances of inverter FET are estimated in each SVPWM sector by EKF. When open fault occur on switch, the resistance value of that switch FET will go to the faulted value while the resistance maintains the value under normal condition. By Matlab simulation, we showed that the proposed method can detect and isolate the faulted FET in inverter effectively.



09:40~09:55	WA06-3

An Investigation on A Torque Control Method for Wind Turbines Using Both Optimal Mode Gain And An Additional Gain
Chaewook Lim(Hanbat National University, Korea, Republic of )

When it comes to torque control method, the traditional torque control method where the optimal mode gain is used has been chosen in many wind turbines. One of the major shortcomings of the traditional torque control method is slow response when it applies to large multi-MW wind turbines. In this paper, a torque control method using a nonlinear parameter of aerodynamic torque for rotor speed is considered among them and the nonlinear parameter is obtained not in real time. Simulation results are presented for a 2MW wind turbine as the obtained nonlinear parameter is applied.



09:55~10:10	WA06-4

Optimization of a Grid-tied Microgrid Configuration using Dual Storage Systems
Petrus Yuri Nugraha(Institut Teknologi Bandung, Indonesia), Augie Widyotriatmo(Institut Teknologi Bandung (ITB), Indonesia)

This paper presents optimization in capacity sizing and operational schedule for a grid-tied microgrid using dual storage systems. Photovoltaic power system is used as a renewable energy source. Pumped-storage hydroelectricity and battery energy storage system are utilized as energy storage systems. The physical models of the photovoltaic system, pumped-storage hydroelectricity, and battery energy storage system are developed. Performances required for microgrid system are high renewable energy penetration with low curtailed renewable energy. Mixed integer linear programming (MILP) is used to



10:10~10:25	WA06-5

Application of a Nonlinear Controller Based on Recurrent Neural Network for Coordinated of PSS and ASMES
Mohd Fauzi Othman(Universiti Teknologi Malaysia, Malaysia)

Flexible AC transmission system devices are used in power transmission networks in order to increase the maximum power transmission and stability. In this study a nonlinear control strategy based on Recurrent Neural Network (RNN) is designed to control PSS and ASMES for a standard power system. The results demonstrate that the proposed coordinated control strategy based on RNN lead to improvement in stability of frequency and terminal voltage responses of the generator.



10:25~10:40	WA06-6

The Appropriate Voltage Mode Duty Cycle Signal Supply for Lighting LED
Pichkanit Sukpasri, Jirawath Parnklang(King Mongkut's Institute of Technology Ladkrabang Bangkok, Thailand)

In order to improve the LED in terms of efficiency of illumination, a technique to control frequency and duty cycle are in the term key essentials. The objective of this research proposes to tests the lighting LED illumination which use for lighting applications with the pulse generator voltage source. Pulse voltage source change the duty cycle of the on signal voltage from 10% to 90% and change the frequency to be 100, 200 and 300 Hz respectively. When we control current lower than exceeding peak current of ability LED. It keeps the efficiency of luminance compared the power to be increase.