Design and simulation of modular permanent magnet DC turbine for offshore wind farm

被引：0
|
作者：
Shen K.-G. [1 ]
Xie B.-C. [1 ]
Cai X. [1 ]
机构：
[1] Wind Power Research Center, Shanghai Jiao Tong University, Shanghai
来源：
Dianji yu Kongzhi Xuebao/Electric Machines and Control | 2019年 / 23卷 / 02期
关键词：
All-DC offshore wind farm; DC wind turbine; Direct-drive permanent magnet synchronous generator; Fractional slot concentrated winding; Magnetic integrated transformer; Modular;
D O I：
10.15938/j.emc.2019.02.005
中图分类号：
学科分类号：
摘要：
Traditional topologies of all-DC offshore wind farm raised voltage by making multiple generators connected in series, which would cause problems of additional insulation enforcement for generator windings and complex power distribution and voltage control when situations of unbalanced wind speed and potential faults were encountered. A modular permanent magnet DC wind turbine topology for offshore wind farm was proposed. The combination of fractional slot concentrated winding direct-drive permanent magnet synchronous generator (FSCW DDPMSG) and magnetic integrated transformer (MIT) directly produced high voltage direct current (HVDC) at the end of generator, which was of strong fault tolerance. Mathematical models of generator, power electronic converters and MIT were established. Both power factor correction (PFC) control strategy of generator winding currents and voltage stability control strategy of generator inner low voltage direct current (LVDC) bus were designed. Simulation results demonstrated that modular permanent magnet synchronous generator can achieve smooth transitions during start, variable wind speed, fault and stop processes, and realize the maximum power point tracking (MPPT), which can provide useful technical reference for the future all-DC offshore wind farms. © 2019, Harbin University of Science and Technology Publication. All right reserved.
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页码：35 / 43
页数：8
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