摘要
提出一种风力机特性模拟方法,以实际系统与模拟系统转动惯量差与系统实时加速度乘积作为补偿项,实现风力机特性动态模拟。研究了一种基于开关磁阻电机(SRM)的风力机模拟器,上位机设定风速,DSP中采集风速和转速信号,执行风力机模型,控制SRM实时输出风力机转矩。基于SRM的转矩近似模型和实验测定的磁化及转矩特性,微步内选择施加电压矢量,把磁链和转矩实时控制在相应的滞环内,实现了SRM的直接转矩控制。仿真和风力机最大功率点跟踪实验证明,该模拟器具有良好的动态转矩跟踪性能,转矩脉动小。
A method of wind turbine simulation is presented,which takes the product of the real-time acceleration and the inertia moment difference between real and simulative systems as the compensation item to realize the dynamic simulation.A wind turbine simulator based on the DTC（Direct Torque Control） of SRM（Switched Reluctance Motor） is designed.The wind speed setting is provided by the supervisory PC while the wind turbine model is implemented in DSP,which acquires the wind speed and rotational speed,and controls the SRM to output the wind turbine torque in real-time.Based on the proximate torque model of SRM and the experimental magnetizing and torque characteristics,the appropriate voltage vectors are applied in the micro steps of DTC to control both flux and torque within the hysteresis loop.Simulation and MPPT（Maximum Power Point Tracing） test indicate that the simulator has a good dynamic torque tracking performance with small torque vibration.
出处
《电力自动化设备》
EI
CSCD
北大核心
2011年第5期15-19,27,共6页
Electric Power Automation Equipment
基金
国家科技部中英国际合作项目(2006DFA63100)~~
