液压蓄能式波浪能发电系统及其控制方案研究

构建液压蓄能式波浪能发电系统,以降低电能传输过程交流侧电流谐波为目标,提出采用三开关Vienna整流器与T型三电平逆变器构成的电能传输方案.介绍发电系统组成部分,分析Vienna整流器与T型三电平逆变器的优势,并建立系统主要部件数学模型.在Matlab/Simulink中搭建仿真模型,在不同波浪条件下对系统间歇发电模式...

RESEARCH ON HYDRAULIC ENERGY-STORAGE WAVE ENERGY GENERATION SYSTEM AND ITS CONTROL SCHEME

A hydraulic energy-storage wave energy generation system is constructed.A power transmission scheme which composed of a three-switch Vienna rectifier and T-type three-level inverter was proposed aiming for reducing AC-side current harmonics during power transmission process.The components of the power generation system are introduced and the advantages of Vienna rectifier and T-type three-level inverter are analyzed.A mathematical model of main components in system is built for analysis.The simulation model is built in Matlab/Simulink,the intermittent duty and continuous duty of power generation are simulated under different wave conditions.The results indicate stable operation of the system under different wave conditions,the proposed converter scheme has an effective supression ability for current harmonics both generaotr-side and grid-side,meeting the requirements of grid-connected standards for current harmonic limits and total harmonics distortion.