【作者】 姜晓飞；

【导师】 吕振；

【作者基本信息】 辽宁工程技术大学 ， 电力电子与电力传动， 2011， 硕士

【摘要】 直驱式风力发电机组在风力发电系统中的应用日益广泛,其结构省去了齿轮增速箱,大幅度的减少了成本,降低了整个系统的故障率,并使控制系统简化。在不久的未来经过市场的验证,直驱式风力发电系统会发挥它更大能量,推动风力发电产业的发展。此文在上述背景下选题,文中在详细的阐述了风力发电并网技术的基础之上,主要直驱式风力发电的系统的全功率变流器的拓扑结构,控制策略研究,其中包括对直驱式永磁同步风力发电机的数学模型及控制策略的研究,直流母线设计,研究并网逆变器的结构和控制,整个变流器采用双PWM控制系统,这是一种新型的控制策略,精度更高,准确性也增强,选用TMS320LF2407这种专为控制电机而设计的DSP芯片,用MATLAB软件进行仿真实验。文中的实验结果表明直驱式风电机组全功率变流器实现了把风机输出的随风速变化而发生幅值,频率,相位变化的交流电转换成为与电网电压幅值,频率,相位相一致的电能,实现并网的结果,达到了预期的要求。更多还原

【Abstract】 In the wind power systems ,Direct driving type wind turbine generators are applied widely, its structure is omitted gear growth box, greatly reduce the cost and reduce the system failure rate, and make the control system is simplified. In the near future by market validation, direct driving type wind power system will play its greater energy and promote the development of wind power industry.This topic in the background, this paper were described in detail grid-connected technology on the basis of main direct driving type of wind power system of the whole power converter topology structure, control strategy research. Including direct driving type of permanent magnet synchronous wind generators’ mathematical model and the control strategy of the research, dc bus design. Research grid inverter of structure and control, the whole converter adopt double PWM control system, this is a new kind of control strategy, higher precision, accuracy, also improve, choose TMS320LF2407 this designed for control motor and design of DSP chip, MATLAB software simulation experiment.The experimental results show that the wind generator direct driving type realized the full power converter blower output with wind speed change and produces amplitude. Frequency and phase change of alternating current conversion become and the grid voltage amplitude, frequency, phase consistent electricity, achieve the result of grid, achieves the desired requirements.更多还原