摘要
针对风速多变及外界干扰情况下风电系统出现的风能利用率低、鲁棒性差及安全可靠性差等问题,提出了一种基于能量成形的直驱永磁风电系统最大风能捕获算法。该算法采用能量成形及端口受控哈密顿(PCH)系统方法,从能量平衡的角度,建立永磁发电机(PMSG)PCH系统的非线性模型,设计了PCH系统反馈控制器。通过基于PCH系统控制器和H∞控制器的叠加反馈,设计出能跟踪最佳转矩且具有扰动抑制的PCH系统H∞控制器。实验结果表明,该控制策略实现了风电系统的变速恒频运行、最大风能利用,验证了理论模型和控制策略的正确性、可行性。
Aiming at the problems of wind power system under variable wind speed and external disturbances, such as low wind energy utilization, poor robustness, low security and reliability, an algorithm is proposed based on energy shaping control method for direct-drive permanent-magnet wind power system to capture maximum wind power. The algorithm adopts energy shaping method and port-controlled Hamiltonian （PCH） system theory;and the PCH nonlinalgorithm adopts energy shaping method and port-controlled Hamiltonian （PCH） system theory;and the PCH nonlinear model of permanent magnet synchronous generator （PMSG） is established from the energy-balancing point of view. The PCH feedback controller was designed. With the superposition feedback of PCH feedback controller and Hx controller, a PCH system Hx controller was designed to track optimal torque and suppress disturbance. The test result shows that this control strategy realizes variable speed constant frequency operation and maximum wind power utilization of wind power system, which verifies the validity and feasibility of theoretical model and control strategy.
出处
《仪器仪表学报》
EI
CAS
CSCD
北大核心
2013年第2期344-351,共8页
Chinese Journal of Scientific Instrument
基金
河北省自然科学基金(F2012203088)资助项目
关键词
风力发电
最大风能捕获
直驱永磁发电机
端口受控哈密顿系统
H∞控制
wind power generation
maximum power capture
directly-driven permanent magnet generator
port-controlled Hamiltonian system
Hx control
