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It is our pleasure to introduce you to the Proceedings of 2017 International Conference on Green Energy and Applications (ICGEA 2017), NTU, Singapore, March 25–27, 2017. Interest in Green Energy as well as its applications has remarkably increased in recent years. Novel solutions of electronic power technology, power systems and applications, energy engineering and energy storage equipment, power...
The aerodynamic performances of a symmetric airfoil bladed Vertical Axis wind turbine (VAWT) with different end plate configurations are studied using computational methods. The aerodynamic performance of VAWT can be improved using endplates. The secondary flow vortices can be suppressed by this endplates which improves torque characteristics. In this study, a symmetric airfoil bladed giromill wind...
Concept of a small scale waste heat recovery system using exhaust gases from the internal combustion engine is presented in the paper. The system is based on the Clausius-Rankine steam cycle as recommended for this purpose due to its simplicity and relatively lower investment costs if compared to the organic Rankine cycle systems. The source of the waste heat were exhaust gases from the internal combustion...
Recent developments in intelligent control methods and Power Electronics have produced PV based DC to AC converters related to AC drives. Cascaded boost converter and inverter find their way in interconnecting PV and Induction Motor. This paper deals with digital simulation and implementation of closed loop controlled five-level inverter based Photo-Voltaic (PV) system. The objective of this work...
In this paper, an identification method of the oscillation current and the short-circuit fault current in DC traction power supply system based on empirical mode decomposition (EMD) and approximate entropy is proposed. The feeder current is decomposed by means of EMD technique, and the sum of the approximate entropy of each intrinsic mode function (IMF) is calculated. Thus, the characteristic value...
A new method of wide-area backup protection is proposed based on fault charge comparisons according to the wide-area fault charge information of power grid. The node Intelligent Electronic Device (IED) associated domain is defined in the method, and the relationship of positive sequence fault charges for associated domain boundaries is sought. Then conceptions of the calculational charge and the reference...
In this paper, an alternative improved technique is proposed for determining the stability margin of low-order perturbed systems. This approach is based on the results on Hurwitz invariance of uncertain polynomials and also results on the stability margin of low-order perturbed systems. Further, this approach is applied for determining stability margin of PWM push-pull dc-dc converter and PD controller...
The static property in the proportional solenoid with a non-magnetic ring was analyzed with the method of Finite Element Method (FEM) as an example in order to obtain the electromagnetic force characteristic of the plunger. Different ampere-turns were adopted to get the static characteristics in the proportional solenoid, the steady magnetic field was researched during the moment of the plunger based...
This paper proposes a temperature sensing voltage-controlled oscillator (VCO) with bandgap reference voltage circuit (BGRV) for applications to low power management and wireless systems integrated circuits. This CMOS bandgap core reference voltage makes use of linear combination of PTAT current and BJT VBE to generate bandgap reference voltage source. And this PTAT voltage is to control voltage-controlled...
The microgrid concept provides a quite appealing solution for overcoming the challenges of integrating renewable energy sources and distributed generators into power grids. Advances in the microgrids control have improved the microgrids potential to be integrated into the conventional electrical systems in a higher capacity. This improvement not only covers their internal control performance and connection/disconnection...
This paper presents the modelling, simulation and hardware evaluation of a grid tied inverter suitable for wind energy conversion systems. The grid-tied wind power converter converts the energy harvested from wind to DC through a permanent magnet synchronous generator using a simple diode rectifier and then converts it back to AC using a pulse width modulated inverter before coupling the wind turbine...
A new method to diagnose open-line fault of the branch line of the medium voltage distribution network without ground is presented based on electric power distribution information system data and association rules algorithm. First through the analysis of the correlated data of electric power distribution information system, a method of mining association rules based on data feature selection is established...
The purpose of this paper is to present the methodology of SAIFI, SAIDI and CAIDI estimation of Provincial Electricity Authority (PEA) distribution network in Thailand using Artificial Neural Networks (ANNs). The data used in this study was obtained from the Reliability Program of PEA. The feeder data from Singburi substation was used as the samples of ANNs in this research from January 2010 to October...
The main problem which often occurs in wind turbine systems is getting the maximum power output and maintaining the DC link voltage at a constant value through wind fluctuation. This paper proposed to maintain the DC link voltage during stand-alone condition, it takes a battery as energy storage with a bidirectional buck-boost converter to regulate charging and discharging mode, alternately. Control...
With the diversification of the demand for auxiliary services in power system and the new form reconstructed by economic relations among related components of electric power system under new electricity reform, it is necessary to construct a reasonable auxiliary service cost compensation mechanism to adapt to special reforms of electricity auxiliary service market in the future. In this paper, the...
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