A novel MPPT method for enhancing energy conversion efficiency taking power smoothing into account

被引：67

作者：

Liu, Jizhen ^{[1
]}

Meng, Hongmin ^{[1
]}

Hu, Yang ^{[1
]}

Lin, Zhongwei ^{[1
]}

Wang, Wei ^{[1
]}

机构：

[1] North China Elect Power Univ, State Key Lab Alternate Elect Power Syst Renewabl, Beijing 102206, Peoples R China

来源：

ENERGY CONVERSION AND MANAGEMENT | 2015年 / 101卷

关键词：

Wind turbine; Doubly fed induction generator; Maximum power point tracking; Rotational inertia; Small signal analysis; Efficiency; Power smoothing; WIND ENERGY; OUTPUT POWER; TRACKING CONTROL; SYSTEMS; FLUCTUATIONS; TURBINES;

D O I：

10.1016/j.enconman.2015.06.005

中图分类号：

O414.1 [热力学];

学科分类号：

070201 [理论物理];

摘要：

With the increasing capacity of wind energy conversion system (WECS), the rotational inertia of wind turbine is becoming larger. And the efficiency of energy conversion is significantly reduced by the large inertia. This paper proposes a novel maximum power point tracking (MPPT) method to enhance the efficiency of energy conversion for large-scale wind turbine. Since improving the efficiency may increase the fluctuations of output power, power smoothing is considered as the second control objective. A T-S fuzzy inference system (FIS) is adapted to reduce the fluctuations according to the volatility of wind speed and accelerated rotor speed by regulating the compensation gain. To verify the effectiveness, stability and good dynamic performance of the new method, mechanism analyses, small signal analyses, and simulation studies are carried out based on doubly-fed induction generator (DFIG) wind turbine, respectively. Study results show that both the response speed and the efficiency of proposed method are increased. In addition, the extra fluctuations of output power caused by the high efficiency are reduced effectively by the proposed method with FIS. (C) 2015 Elsevier Ltd. All rights reserved.

引用

页码：738 / 748

页数：11

共 32 条

[1]

A review of maximum power point tracking algorithms for wind energy systems [J].