Comparison Between Different Design Topologies for Multi-Megawatt Direct Drive Wind Generators Using Improved Second Generation High Temperature Superconductors

Various design topologies were investigated to study the weights and costs for a direct drive wind turbine generator using improved second generation (2G) YBCO high temperature superconductors (HTS). Five different design topologies using combinations of air core, iron core, salient and non-salient configurations for both stator and rotor were considered for a generator with the nominal rating of 10 MW, 8 RPM and 3300 V. The main objective of the investigation was to minimize the HTS quantities and the reduction of total cost to achieve the same rating performance. The electromagnetic design was performed using transient finite element modeling including the improved HTS conductor characteristic properties. The mechanical design includes the support structures for both full load operation and sudden three-phase terminal fault conditions which can cause severe stresses.

[1]  Maureen Hand,et al.  Installation, Operation, and Maintenance Strategies to Reduce the Cost of Offshore Wind Energy , 2013 .

[2]  Ronghai Qu,et al.  Review of Superconducting Generator Topologies for Direct-Drive Wind Turbines , 2013, IEEE Transactions on Applied Superconductivity.

[3]  M. Hsieh,et al.  Design and Analysis of High Temperature Superconducting Generator for Offshore Wind Turbines , 2013, IEEE Transactions on Magnetics.

[4]  M. Hand,et al.  2011 Cost of Wind Energy Review , 2013 .

[5]  Devdatta Kulkarni,et al.  High-Power Dense Electric Propulsion Motor , 2015, IEEE Transactions on Industry Applications.

[6]  H. Ohsaki,et al.  Design and characteristic analysis of 10 MW class superconducting wind turbine generators with different types of stator and rotor configurations , 2013, 2013 International Conference on Clean Electrical Power (ICCEP).

[7]  M. Sekino,et al.  Comparison of Conventional and Superconducting Generator Concepts for Offshore Wind Turbines , 2013, IEEE Transactions on Applied Superconductivity.

[8]  Ronghai Qu,et al.  Comparative Analysis on Superconducting Direct-Drive Wind Generators With Iron Teeth and Air-Gap Winding , 2014, IEEE Transactions on Applied Superconductivity.

[9]  B. Gamble,et al.  10 MW Class Superconductor Wind Turbine Generators , 2011, IEEE Transactions on Applied Superconductivity.

[10]  Haran Karmaker,et al.  High power dense electric propulsion motors , 2013, Industry Applications Society 60th Annual Petroleum and Chemical Industry Conference.

[11]  Hiroyuki Ohsaki,et al.  Electromagnetic design study of 10 MW-class wind turbine generators using circular superconducting field coils , 2011, 2011 International Conference on Electrical Machines and Systems.

[12]  H. Karmaker,et al.  Stator design concepts for an 8 MW direct drive superconducting wind generator , 2012, 2012 XXth International Conference on Electrical Machines.

[13]  Venkat Selvamanickam,et al.  Enhanced critical currents in (Gd,Y)Ba2Cu3Ox superconducting tapes with high levels of Zr addition , 2013 .

[14]  Yi Guo,et al.  Gearbox Reliability Collaborative Update (Presentation) , 2012 .

[15]  Kais Atallah,et al.  Trends in Wind Turbine Generator Systems , 2013, IEEE Journal of Emerging and Selected Topics in Power Electronics.

[16]  C. Lewis,et al.  A Direct Drive Wind Turbine HTS Generator , 2007, 2007 IEEE Power Engineering Society General Meeting.

[17]  Robert D. Schmidt,et al.  Second-Generation HTS Conductor Design and Engineering for Electrical Power Applications , 2009, IEEE Transactions on Applied Superconductivity.

[18]  Minwon Park,et al.  Practical Design of a 10 MW Superconducting Wind Power Generator Considering Weight Issue , 2013, IEEE Transactions on Applied Superconductivity.

[19]  S Umashankar,et al.  Cost effective fully fed wind turbine HTS generator: An alternative to existing generators in offshore wind farms , 2011, India International Conference on Power Electronics 2010 (IICPE2010).