| 1. | Comparison and analysis of wind power generator and its control system
风力发电机及其控制系统的对比分析 |
| 2. | It invests 1billion rmb in manufacturing 1 . 5mw and above wind power generators in jndz
在江宁开发区内投资10亿元，生产1 . 5mw及以上风力发电机组。 |
| 3. | Secondly the three dimensional model of the wind power generator is established using unigraphics nx 3
二是利用unigraphicsnx3软件建立风力发电机的三维模型。 |
| 4. | I ' m also trying not to depend on the town ' s electricity supply , be autonomous by using solar panels and wind power generators
我也力图不去依赖镇上的电力供应，而是依靠使用太阳能面板和风力发电机进行独立供电。 |
| 5. | Next , the control technique and arithmetic of doubly - fed vscf wind power generator are also studied in detail , including some of author ' s sights
其次，对变速恒频双馈风能发电的控制技术及其控制算法进行了详尽的研究，其中不乏有作者自己独到的见解。 |
| 6. | However , the control technology of the doubly - fed vscf wind power generator system is rather complicated , some of difficulties and emphases should be perfected in the future
由于本课题的复杂性及其综合性决定了其难度较高，有些难点、重点还需进一步研究完善。 |
| 7. | Then , the main circuit used igbt module and its driver circuit , protect circuit and its control circuit are designed in accordance with the characteristic of control system of doubly - fed vscf wind power generator
接着针对变速恒频双馈风能发电控制系统的特点，设计了基于igbt模块的主电路及其驱动、保护和控制电路。 |
| 8. | When the system is working , the photoelectric coder checks the speed of doubly - fed vscf wind power generator ; according as the principle formula of vscf , the excitation current frequency of rotor is calculated to satisfy the aim of vscf control
系统工作时，用光电编码器检测出发电机的转速，依据变速恒频的原理公式计算出应馈入转子励磁电流的频率，达到变速恒频控制的目的。 |
| 9. | Just based on the two points mentioned above , a control system of doubly - fed variable speed constant frequency ( vscf ) wind power generator based on 8xc196mc is designed in this paper , which can smoothly transform between the different operational modes from sub - synchronous speed to synchronous speed and to super - synchronous speed
正是基于上述两个出发点，本文设计了一台基于8xc196mc单片机的2 . 8kw变速恒频双馈风能发电控制系统。主电路中变流器的设计可使该系统能工作于亚同步速、同步速及超同步速三种运行状态，并具有能量双向流动的特点。 |
| 10. | Secondly , to achieve the independent regulation of active and reactive power output from the generator side which is designed for the purpose of tracing the maximum wind - energy capturing . the paper has analyzed the mathematic model of the ac excited doubly - fed machine and the stator field orientation control strategy of the motor as vscf wind power generator . thirdly , it has put forward and designed the dual pwm converter with the capacity of energy flowing bidirectional aimed at the demand of rotor energy bidirectional flow . the author constructed reliable and integrated experimental system and did a series of experimental study including no - load , cutting - in network and power generation at , below and above the synchronous speed
论文首先分析了风机运行特性及其最佳风能利用原理，通过仿真及实验验证了采用直流电机的输出特性模拟风力机的最大输出功率曲线的可行性，并给出了模拟系统的硬件结构；然后为了实现交流励磁发电机有功、无功功率独立调节机理，分析了交流励磁双馈发电机的数学模型和在追踪最大风能捕获变速恒频风力发电时必需的定子磁链定向矢量控制策略；针对双馈发电机转子能量双向流动的要求，提出并设计了具有能量双向流动能力的双pwm交流励磁用变频器；最后为实现从理论到实践的全面研究，研制出了一套小功率完整的双pwm变频器交流励磁的双馈风力发电机实验系统，进行了空载、并网、同步速及上、下的发电运行等一系列的运行实验；所完成的仿真和实验研究均验证了理论、模型和控制策略的正确性、可行性。 |
