一种分段式变步长爬山法最大功率追踪控制策略

doi:10.11985/2015.11.002

摘要/Abstract

摘要：

为提高小型永磁同步风力发电系统最大功率追踪的性能,结合小型风力发电机工作特性,在两种经典爬山法的基础上,提出一种更加适合小型风力发电机的分段式变步长爬山法,该算法能快速稳定地使系统运行在最大功率点。在此基础上,搭建了基于Matlab/Simulink的模型进行仿真分析,并构建了以TMS320F28335 DSP为控制核心的直驱式永磁同步风力发电模拟实验平台,通过实验和仿真结果验证了分段式变步长爬山法的有效性和优越性。

关键词: 直驱式风力发电系统, 最大功率追踪, 变步长爬山法, 分段式变步长, 永磁同步发电机

Abstract:

In order to improve the maximum power point tracking performance of the small-scale permanent magnet synchronous wind power system(WPS), combing with the small-scale wind generator operating characteristics, a segmented variable step hill-climbing method suitable for the small-scale WPS is proposed based on the two classic hill-climbing method, which can fast stabilize the system at the maximum power point. Based on it, the simulation system is built by using Matlab/Simulink. And then the direct-driven WPS experimental platform is constructed with the TMS 320F28335 DSP core. The effectiveness and superiority of the proposed hill-climbing method is verified by simulation and experiment.

Key words: Direct-driven wind power generation system, maximum power tracing, variable step climbing method, segmented variable step, permanent magnet synchronous generator

中图分类号:

TM614

颜建虎, 刘丹, 李强, 冯承超. 一种分段式变步长爬山法最大功率追踪控制策略[J]. 电气工程学报, 2015, 10(11): 11-18.

Yan Jianhu , Liu Dan , Li Qiang , Feng Chengchao . A Maximum Power Point Tracking Control Strategy Based on Segmented Variable Step Hill-Climbing Method[J]. Journal of Electrical Engineering, 2015, 10(11): 11-18.

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参数	数值
风力机半径R/m	0.65
风力机桨距角β/rad	10
空气密度ρ/(kg/m³)	1.28
额定风速v_n/(m/s)	9
启动风速v_st/(m/s)	3
最佳叶尖速比λ_opt	5.54
最大风能利用系数C_pmax	0.28
磁链Ψ_f/Wb	0.125
定子绕组电阻R_s/Ω	0.62
dq轴电感L_d,L_q/mH(L_d= L_q)	835
发电机极对数p	4
最大电磁转矩T_max/(N·m)	5
转动惯量J /(kg·m²)	0.000 16
摩擦系数F	0.000 544