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Power electronic converter technology SINTEF Energy Research has broad experience from development and analysis of power electronic converters. This involves prototypes for research purposes and application-specific converters for industry companies. Newsletter from SINTEF Energy Research We have been involved in development of complete or parts of converters in the power range of 100 W to 5 MW. In adittion we have significant experience from projects for the industry on analysis of complex power grids containing power electronic converters. Typical applications have been frequency converters for asynchronous motor drives and grid connected front-end converters, but also converters for subsea applications (e.g. hyberbaric welding machines). The group has expertise for managing the most important challenges in connection to converter design, including understanding physics of switching devices, power circuit topologies, control engineering, control electronics, driver design, and EMC problems. Power electronics activities SINTEF Energy Research is supporting power electronics industry with a range of activities concerning development of new power supplies and converters in the power range 100 W to 5 MW: • Basic studies of switching power transistors (IGBT, MOSFET, etc) • Development of prototypes ready for production • Simulations of power supplies and converters SINTEF Energy Research is also assisting industry, utilities and oil companies with problems related to application of power electronics. This also includes high power converter systems like HVDC: • • • • Evaluation and recommendations of installations containing converters Evaluation of new converter applications in power systems Operating problems and faults caused by converters and motors Development of application specific converters reactive power fuel cell/electrolyser energy storage A newly developed Virtex 5 FPGA (Field Programmable Gate Array) for advanced real time control of power electronic converters. Know-how Deliverables • • • • • • • • • • Analysis & Verifications studies: • Fault and interaction analysis of power systems containing converters • Feasibility studies • Component evaluation including cables and lines • Converter Topologies • Converters in Power Systems • Converter related EMC problems Power Semiconductors Power Circuit Topologies Magnetic Components Motor Drives Numerical simulation Cable modelling Control Electronics Control Engineering Power Quality including EMC Energy Storage For interconnecting renewable energy sources to AC grids, power electronic converters with advanced control systems are needed Development of prototypes: • Design support • Complete units Special products • Subsea Equipment • Electric Propulsion What is a Power Electronic Converter? A power electronic converter is a machine for converting and controlling electric energy (current, voltage, frequency). The converters apply one or more switching power semiconductor, magnetic components, capacitors, control electronics and other essential supplementary components. Newsletter 33-v1 Power electronic converters are found in a countless number of applications in a very wide range of power and circuit topologies. Small AC/DC and DC/DC converters, 0 - 1 kW, are used for electronic supplies, battery chargers etc. Large three-phase AC converters of several MW are used for HVDC-transmission or as frequency converters for variable speed motor drives (VSD). Contact: SINTEF Energiforskning AS (SINTEF Energy Research) NO-7465 Trondheim, Norway Phone: + 47 73 59 72 00, www.sintef.no/energy Senior Research Scientist Magnar Hernes, Phone: + 47 73 59 42 23, email: [email protected]