摘要
针对目前风力发电实验平台底层代码不开放、编程繁琐、实时监控差等缺点,研发了一套开放、易编程、实时性强的风力发电实验平台。分析了双馈风力发电机组的运行原理。首次推导了以直流侧电压误差和igq误差作为输入量α、U的网侧幅相控制。推导了基于定子电压定向的空载并网及功率外环和电流内环的双闭环最大功率跟踪控制。在Simulink环境下仿真,验证了控制策略的有效性。搭建了以PLC和NI Compact RIO为核心,Lab VIEW程序实现控制策略和监控的风力发电实验平台,对并网及最大功率跟踪进行实验。实验结果表明在该实验平台上可以准确、可靠地进行风力发电技术研究。
Current wind power experiment platform has many shortcomings such as the bottom code without open, the complex programming and the poor real-time monitoring, a set of wind power experimental platform which is full-open, easy programming and strong real-time performance is developed. The principles of doubly-fed induction generator （DFIG） are investigated. Amplitude phase control that is taking the DC voltage error and igq error to control the input αand U of the grid side converter are derived. The controlling strategies of grid-connection and power external loop and current inner loop under stator voltage orientation to realize maximum power point tracking are pulled. The effectiveness of the control strategy is examined in the Simulink environment. The experimental platform takes NI Compact RIO and PLC as the core controller is developed. The control strategy and monitoring system is realized by LabVIEW program. Experimental results indicate that the experimental platform is accurate and reliable, which can be applied to the study of the wind power generation technology.
出处
《电力系统保护与控制》
EI
CSCD
北大核心
2016年第10期104-111,共8页
Power System Protection and Control
基金
南方电网公司重点科技项目资助(K-YN2013-175)~~
关键词
双馈发电机
全开放可实时监控式实验平台
幅相控制
双闭环控制
空载并网
最大功率点跟踪
doubly-fed induction generator
fully-open and real-time monitoring-able experimental platform
amplitude and phase control
double closed-loop control
grid-connection without load
maximum power point tracking
