双级矩阵变换器直驱风力发电系统最大风能追踪

A Two-Stage Matrix Converter Based Control Strategy of Maximum Wind Power Point Tracking for Direct-Driven Wind-Power Generation System

提出了一种双级矩阵变换器(two stage matrixconverter,TSMC)直驱风力发电系统最大风能追踪控制策略。基于爬山法,通过引入中间变量实现对系统捕获风能状态进行判断,在此基础上,提出基于集成控制的最大风能追踪(maximum power point tracking,MPPT)算法。在Matlab中建立了TSMC风电系统仿真模型。仿真结果表明:新的MPPT算法通过对风力发电系统逆变级无功功率分阶段性的控制,不仅具有较好的准确性和稳定性,而且加快了系统捕获最大风能的速度。

A two-stage matrix converter （TMSC） based control strategy of maximum wind power point tracking for direct-driven wind-power generation system is put forward. Based on hill climbing search, by means of introducing in intermediate variable the state of the captured wind power is judged, and on this basis a maximum power point tracking （MPPT） algorithm based on integrated control is proposed. By use of Matlab, a TMSC based simulation model of direct-drive wind power generation system is built, and simulation results show that through the phaseal control of reactive power in the inverters of direct-drive wind power generation system, the proposed algorithm is more accurate and stable, and the speed for capturing maximum wind power is quickened.