High Efficiency Power Generators

A.1. New Modular Machinery design Smart Motor: The prototype was ordered 3rd of April 2013. Scheduled time of delivery from workshop was September 2013. This type of machine design was new for the company TES, which means that they had to develop some n ew tools for production. The result is that the machine has been further delayed, but is now ready. The Factory Acceptance Test (FAT) has been completed this week (week 48). The machine will then be shipped to Stord. Due to the delay in production not a ll tests will be made in 2013. It is believed that we will be able to run the six-phase motor with the drives in the lab at Stord in December. This will be without any load machine, which means that heat run tests can only be made by running one of the 3 phase windings as motor and the other as generator. The machine is equipped with a large number of temperature sensors to investigate and verify the behaviour and performance of the machine during all planned test runs. A.3. Control of Modularized mu lti-phase PM machines Wärtsilä : This spring some more work have been made to develop a special way to implement optimal control of a PM machine with saliency, including the field-weakening area. Different approximations are tested by help of simulatio n. The preferred solution has now been implemented in the Power Drive and tested on a small PM-motor in Trondheim. A method for control of magnetic coupled multi-phase salient-pole machines has been developed. Reports are completed. In Q3 and Q4 an impro ved Synchronous Modulation method has been developed for a 3-level inverter on a 3-phase drive. In this solution most of the modulator will be transferred to the Field Programmable Gate Arrays due to time consuming routines. Parallel-processing is prefer red. This work will be reported in one master thesis end of June 2014. The method can be extended to multi-phase applications. New converters for the PM-drive have been installed. Cabling of signal and power cables has been made. Design/order of shaft couplings, order of gear box w/coolers has been made. Fundament for mounting of the drive has been ordered and is mounted in the Lab at Stord. Commissioning and testing of the drive will be made in December. The testing in 2013 will not include testing w ith load-machine as explained above. The budget is used in accordance with the plan, but complete test with load- machine will not be included. Test with load machine will be made in 2014 on our own cost. In January the gear box will be connected. The co mplete test with loaded machine will be executed during February/March 2014. These results should be included in the final report of the project. The project ends in 2013, but, we hereby ask for acceptance for delayed delivery of the final technical rep ort to end Q2 2014 to include all test results.

In this project a high efficient modularized multi-phase PM generator will be designed and build. Research within superconductors to be used in AC electrical machines will be initiated. A lab-setup for characterisation of losses in superconductors based on MgB2 and YBCO will be build. Material for thermal insulation and methods of cooling will be investigated. Modular multi-phase PM Generator concepts will be evaluated, both with classical distributed windings and concentrated windings. Redundancy and r eplacement issues are important. A concept will be chosen and a full-scale prototype will be build. Control software for magnetic coupled as well as not magnetic coupled multi-phase machines will be developed. The complete drive will be thoroughly test ed in lab.