中国电机工程学报Issue(10)：2367-2374,8.DOI:10.13334/j.0258-8013.pcsee.2015.10.001
采用梯度估计的风力发电系统最优转矩最大功率点追踪效率优化
Efficiency Optimization of Optimum Torque Maximum Power Point Tracking Based on Gradient Approximation for Wind Turbine Generator System
摘要
Abstract
The efficiency of the conventional optimum torque maximum power point tracking (MPPT) algorithm is reduced by large rotational inertia, and the transient time of the control system becomes longer. The problem was analyzed by studying the mechanism of wind turbine. A novel optimum torque MPPT optimization algorithm was proposed to reduce the transient process time caused by high rotational inertia. The solution presented here used gradient estimation to compensate electromagnetic torque reference. A small signal model was presented with a doubly-fed induction generator based wind turbine for the performance analysis of closed-loop poles, step response and frequency-domain characteristics. From the analysis and simulation results, the novel algorithm combines stability of conventional method and high response rate of tip-speed ratio method, and has good stability, dynamic behavior and high efficiency.关键词
风力发电系统/最大功率点追踪/转动惯量/最优转矩控制/小信号模型Key words
wind turbine generator system (WTGS)/maximum power point tracking (MPPT)/rotational inertia/optimum torque control (OTC)/small signal model分类
信息技术与安全科学引用本文复制引用
刘吉臻,孟洪民,胡阳..采用梯度估计的风力发电系统最优转矩最大功率点追踪效率优化[J].中国电机工程学报,2015,(10):2367-2374,8.基金项目
国家重点基础研究发展计划项目(973项目)(2012CB215203)。The National Basic Research Program of China (973 Program)(2012CB215203) （973项目）
