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Today the dq0 reference frame is mainly used for modeling and control of traditional electric machines and small power sources. A current challenge is to merge various dq0-based models appearing in recent literature to obtain a complete model of a large power system. To this end, in this paper we propose a model describing the dynamics of large transmission networks based on dq0 quantities. The proposed...
this paper presents results on the simulation, modeling and optimization of an off grid hybrid solar PV/diesel/battery/inverter power system for residential application. The principal objective is to design a standalone renewable energy system to meet the desired electric load with high renewable fraction, low excess power and low cost of energy. Hourly simulations and optimization were performed...
This paper presents a voltage control strategy based on the optimal duty cycle for a renewable energy system comprised of a Thermoelectric Generator (TEG) in cascade with the KY-Converter, a voltage-boosting topology, and coupled to a resistive load. The mathematical model that describes the TEG is presented as well as a derivation for optimal values (i.e. current and voltage) that provide maximum...
A generic problem of distributed solar home systems (SHS) is the lifetime of the chemical storage battery. In this paper, a model of compressed-air energy storage (CAES) based SHS is developed and simulated to determine the size of the storage tank according to the required load and operating time. Industrial air motors and permanent magnet direct current generator specifications are used for simulation...
A detailed electrical model of a wind turbine system equipped with a permanent magnet alternator (PMA), diode rectifier, boost dc to dc converter and inverter is presented. The power conversion system topology is explained and the electrical model of each component is presented. Based on this electrical model, a Simulink model of the system is constructed. The simulation was implemented in the power...
Wind turbine generators (WTG) have been deployed in many places in the past. It is expected that more and more wind farms will be developed in the near future to meet the Renewable Portfolio Standards (RPS) target. This paper summarizes the experience of the California ISO (CAISO) with the wind generation interconnection studies. The power flow modeling of utility scale wind farm is summarized first...
This paper describes the design, modeling and development of a novel Airborne Wind Energy system (the EAGLE System), designed to handle a 2.5 kW, 25 kW or 100 kW aloft generator at varying altitudes. The system combines a hybrid tethered lighter-than-air and aerodynamic lift based flyer supporting a counter-rotating wind power generator payload, and a nonlinear-robust MIMO control system, with longitudinal...
In this paper we develop a model of combined heat and power (CHP) dispatch for the system consisting of both thermal generators and wind turbines. In this model, the probability of stochastic wind power is included in the constraint set. This approach avoids the probabilistic infeasibility caused by using the average of random variables. The effects of wind speed on the generated power are investigated...
This paper deals with the holistic modeling approach of a combined Photovoltaic, Wind and Fuel Cell power system. The method is using the DK5 modeling/design environment from Mentor Graphics and is based on the new Handel-C programming language. The goal of the work carried out was to achieve an optimized holistic digital control system design, followed by its rapid prototyping into a single Field...
Power systems stability has been analysed specially due to the quick increasing of wind power penetration all around the world, specific in USA and Europe. This research presents the small signal stability analysis based on Kundurpsilas theory but specifically for wind turbines with squirrel cage induction generators - SCIG, understood as a widely accepted and applied for many researchers, power system...
Microgrid is a new concept in the arena of green power generation, which is substantially attracting many researcherspsila interest due to its potential to extend the applications of the distributed generations, especially the renewable energy. So far not much research is done on the microgrid behavior as a whole system. In this paper models for the main microsources including wind turbines, diesel...
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