【摘要】 通过分析交流励磁变速恒频风力发电机组运行特点,将矢量变换控制技术移植到发电机并网控制上,进而讨论了交流励磁发电机空载并网控制策略,建立空载并网仿真模型,对并网前的空载运行、并网时的过渡过程及并网后的追踪最大风能变速恒频发电运行进行了完整的系统仿真,观察了空载并网控制效果。实验研究更进一步验证了空载并网方式对变速恒频发电机的有效性,仿真和实验表明,所开发的空载并网技术是变速恒频风力发电机的一种较理想并网方式。更多还原

【Abstract】 By analyzing the operation behavior of an A.C. excited variable-speed constant-frequency (VSCF) wind-power generator, the field-oriented vector control scheme was transplanted into the cutting-in control of the generator and the investigation of the no-load cutting-in control strategy for the A.C. exited generator was further made in this paper. Based on the theoretical study, a no-load cutting-in simulation model was then established and employed to make a comprehensive system simulation on the no-load operation before the cutting-in, the transient process at the cutting-in moment and the VSCF wind-power generation by tracing maximal wind-energy after the cutting-in. The simulation results offer a good review of the cutting-in control effects. The experiment investigation conduc- ted in the laboratory was made to further verify the effect of the cutting-in scheme for a VSCF system . Both simulation and experiment studies prove that the proposed no-load cutting-in scheme is an relatively ideal cutting-in approach for the VSCF wind-power generation.更多还原