摘要
针对永磁直驱风电系统,采用了一种基于Cuk变换器占空比控制的新型最大功率点跟踪(MPPT)策略,详细分析了风力机的输出功率和Cuk变换器占空比之间的关系,结合改进的最优梯度规则实现了最大功率跟踪,采用Matlab/Simulink建模仿真。结果表明MPPT策略能够使系统快速可靠地实现最大功率跟踪,提高了风能利用率,验证了其正确性和有效性。
For the permanent magnet direct-drive wind power system, a novel MPPT strategy based on duty cycle control of Cuk converter is adopted. Relationship between output power of the wind turbine and duty cycle of the Cuk converter is analyzed. Combined with the optimal gradient rule, the MPPT is realized. Through Matlab/simulink modeling and simulation, the results show that this MPPT strategy can make the system quickly and reliably achieve maximum power tracking, improve the wind energy utilization and thus verify its correctness and effectiveness.
出处
《江南大学学报（自然科学版）》
CAS
2011年第4期407-410,共4页
Joural of Jiangnan University (Natural Science Edition)
基金
无锡市科技发展计划项目(CMES0915)
