Clean energy is changing from its alternative background towards a trendy new goal required in the future. Numerous researches are conducted and many publications appeared about the design of sustainable energy sources. Electric energy seems to be the common mainstream, when it comes to generation, transport and use. Only storage of electrical energy is comprehensive and costly. Generation of electrical energy from natural sources seems inevitable, when looking at the limited amount of fossil fuel. Although hydropower is used for over one century for producing electrical energy, solar power and wind power was underestimated. Nowadays the attention is towards solar- and wind power, as clean energy source. Farms utilizing large wind turbines, producing 2 to 5 Megawatts per turbine are becoming an accepted occurrence in our landscape. Solar power farms are being installed in deserts. All these initiatives are on a large scale and mostly initiated by the national government or industry. On a smaller scale, clean energy can be applied for remote households, or even in urban areas, to save energy from the local supply. Not only costs are saved, also the environment benefits from each small amount of clean energy being produced. On the smaller scale we have to look at small electricity generation systems, that can be installed on a small scale, but yet provide enough energy to supply one household. The two most common applications are solar- and wind power

This paper focuses on the use of Modeling and Simulation in the design and verification process for Renewable and Green Energy. First the role of electrical energy is discussed and second samples are given where modeling and simulation can be applied. Samples include wind and solar power, Hybrid Electrical Vehicles (HEV) and Fuel Cell simulations.

Modeling, Simulation, Renewable, Green Energy, Solar, Wind Power, Hybrid Electrical Vehicle

The application of Modeling and Simulation in the design and verification process for Renewable and Green Energy is the focus of this paper. The scope will be solar and wind energy. First the role of electrical energy is discussed and second samples are given where modeling and simulation can be applied. A brief discussion is given on the model of the wind turbine and the models for the generators. The second part of the paper is concerned with the estimation of losses in the power electronic converters. Here a model in Caspoc will be presented for fast loss prediction in an IGBT inverter.

Modeling, Simulation, Renewable, Green Energy, Solar, Wind Power, Losses IGBT, Doubly Fed

This paper uses the d-q axis theory to develop an inverter-excited vector controller. The inverter will control the exciting current appropriately according to the variation of the wind velocity, and control the output power of induction generator. The system performance is simulated by CASPOC software. A digital signal processor TMS320F240 is used to implement the proposed control algorithms of the inverter-excited vector controller. By the computer simulation and experimental result􀁴, the proposed system has been proved to be feasible for standalone induction generator.

Vector control, Induction generator VSCF system, d-q axis theory