Sensor-less MPPT Control of Small Sized Wind Turbine Generation System and Power Leveling Using Flywheel

2003年，也就是该项目的最后一年，为加快风力发电系统的推广，进行了以下几个方面的研究，取得了一些良好的结果：a)小型风力发电机组的MPPT运行继2002年之后，对一台50W输出的风力发电机组进行了性能评估。今年，利用东京工业大学风能工程中心的大型风洞进行了测试。对理想均匀风速和采用风机时的性能进行了详细的对比研究。结果表明，通过使用小型鼓风机进行测试，可以充分再现性能特性，使得室内条件下的测试变得容易。ii)已经表明，为光伏系统开发的“极限环MPPT控制方案”也适用于风力发电系统。这启用了电源…用于风力发电系统的更多无传感器和无转速传感器的MPPT控制系统。iii)使用2.2kW感应电机和2kW永磁同步发电机的真实模拟系统的电流控制回路已通过将滞后比较器替换为基于d-q坐标系的控制器来改进。B.利用飞轮对波动功率进行功率均衡飞轮储能系统的转速提取和恒功率加速的控制方案，这是利用飞轮的重要技术之一，C.小型自控分布式供电系统中问题的提取通过计算系统的特征值，研究了自控分布式供电系统等值电阻控制的稳定性。结果表明，采用等效阻抗控制使直流环节电压稳定在稳态条件下，不能有效抑制系统的暂态响应。这一事实对今后控制策略的研究具有一定的参考价值。较少

In 2003,the last year for this project, the following points have been investigated in order to accelerate the diffusion of wind turbine generation systems, and some excellent results have been obtained ;A. MPPT operation of small sized wind turbine generatorsi) Performance evaluation of a 50W output wind turbine generator has been carried out following that in 2002. This year, the large scale wind tunnel in Tokyo Plytechnic University Wind Engineering Center has been utilized for the testing. The comparative study of performance under idealized uniform wind speed and that under using a blower has been investigated in detail. It turned out that the performance characteristics can be sufficiently reproduced by the testing using a small blower, which enables easy testing with in -door conditions.ii) It has been shown that the "Limit cycle MPPT control scheme" which has been developed for a photovoltaic system is also applicable to the wind turbine generation system. Which enables a power … More sensor-less and rotating speed sensor-less MPPT control system for a wind turbine generation system.iii) The current control loop of the real-simulator system using a 2.2kW induction motor and a 2kW PM synchronous generator has been improved by replacing hysterisis comparator with d-q frame based controller.B. Power leveling of fluctuated power using flywheelA control scheme for rotating speed picking-up and constant power acceleration of a flywheel energy storage system, which is one of the important techniques in utilizing flywheels, has been investigated.C. Extraction of the problems in small sized autonomous distributed power supply systemsStability study of equivalent resistance control for an autonomously controlled distributed power supply system has been investigated by calculating the system eigen values. It turned out that the equivalent resistance control which is adopted to stabilize the dc link voltage in steady state condition is not effective for dumping the transient response of the system. This fact is informative for the future investigation on the control strategies. Less