Postdoc in Integrated Design of Wind Power Systems Wind Energy Division at Risø National Laboratory, Technical University of Denmark (Risø DTU) is seeking a Postdoc for the Wind Energy Systems programme (WES), working in the research theme “Integration and Control of Wind Power”. Our research is function oriented in the sense that we direct the research towards issues that are relevant for industrial development and applications, and we work in projects with system integration, control concepts for wind turbines, wind power plants, electrical components, grid connection and large-scale wind energy penetration. Job profile The Postdoc will contribute to the development of tools and methods for a grid emulator, which will be used to test wind turbines, wind power plants and drive trains under different grid conditions. The grid emulator will be based on a large power converter, which will make it possible to emulate all kinds of grid conditions including frequency disturbances, phase jumps, unbalances etc. The main objective is the identification and specification of relevant grid conditions, i.e. test cases, methods, and computer hardware requirements for the grid emulator. Starting from the investigation of the relevant test cases to be emulated, the research will first focus on numerical simulation of power system topologies. The simulations aim at developing the necessary knowledge for defining the framework of wind turbine testing under emulated grid conditions. Based on the knowledge created through simulations, the project will investigate the different options regarding the hardware implementation of the grid emulator. Here, the design of the control of the grid emulator plays a central role. Furthermore, real-time simulations may be relevant for defining the minimum level of hardware computing power needed to emulate the selected grid conditions. The main focus of the post doctoral research will be on developing tools for the simulation and emulation of grid conditions for wind turbine test facilities. This includes: • Identification and modelling of grid conditions to be emulated • Modelling and control of wind turbines and wind power plants • Grid connection of wind power plants • Hardware-in-the-loop simulations • Real-time simulations • Design of grid emulator control Qualifications • PhD degree or equivalent in Power System and/or Electrical Engineering • Background in power system and/or wind power technology and control • Knowledge of grid connection of wind power plants • Experience with real-time simulations, HILS and PHILS • Proven programming skills for analytical and modelling purposes, e.g. Matlab • Ability to work independently towards the research goals • Fluency in communicating, reading and writing English We offer We offer a challenging career with the possibility to play an active role in the development of wind power in one of the largest wind energy research centres worldwide. You will be part of the international team carrying out research in Wind Energy Systems, where the daily working language is English. Terms of employment The appointment will be based on the collective agreement with the Confederation of Professional Associations. The period of employment is two years. Further information You are welcome to contact Head of Program Jens Carsten Hansen, +45 46775074 or Prof. Poul Sørensen, +45 2136 2766. Please look at http://www.risoe.dtu.dk/risoe_dk/home/about_risoe/research_departments/vea/ves.aspxfor for more details on the type of activities we undertake. Application We must have your online application by 31 October 2011. Please go to http://www.dtu/career, find the positioin and open the “apply online” and fill in the application form and attach your application, CV and a list of publications. Applications should be submitted in English. Applications and enclosures received after the deadline will not be considered. All interested candidates irrespective of age, gender, race, disability, religion or ethnic background are encouraged to apply. Contact: Jens Carsten Hansen The Wind Energy Division at Risø National Laboratory Technical University of Denmark Copenhagen, Denmark
