摘要
为解决风电热泵制热系统和压缩制冷系统的最大功率点跟踪(MPPT)控制问题,采用MPPT控制模型推导和实验验证的方法,得出系统阻抗变化与风轮转速、风电转化效率间的对应关系.基于系统运行时压缩机阻抗的变化规律,提出了一种改进的变步长爬山搜索法(HCS).通过多变风速条件下的实验验证了改进算法的高效性,解决了搜索方向错误和功率振荡的问题,并将平均风电转化效率由31.6%提高至40.58%.
In order to solve the problem of maximum power point tracking (MPPT) control of wind power heat pump heating system and compressing refrigeration system,the corresponding relationship among system impedance change,wind turbine speed and wind power conversion efficiency was obtained by using MPPT control model derivation and experimental verification methods.Based on the variation law of compressor impedance during system operation,an improved variable step size mountain climbing search (HCS) algorithm was proposed.Experiments under unstable wind speed conditions verified the efficiency of the improved algorithm,and the problems of search direction error and power oscillation were solved,and the average wind power conversion efficiency was increased from 31.6% to 40.58%.
作者
曾林滨
李国良
李明
冯志康
杨麟
ZENG Lin-bin;LI Guo-liang;LI Ming;FENG Zhi-kang;YANG Lin(Solar Energy Research Institute,Yunnan Normal University,Kunming 650500,China;School of Physical and Electronic Information,Yunnan Normal University,Kunming 650500,China)
出处
《云南师范大学学报（自然科学版）》
2019年第4期11-17,共7页
Journal of Yunnan Normal University:Natural Sciences Edition
基金
国家自然科学基金资助项目(51666018)
云南省科技计划青年基金资助项目(2017FDO75)
中国-老挝可再生能源利用联合实验室共建项目(2015DFA60120)
西南地区可再生能源研究与开发协同创新中心基金资助项目(05300205020516009)
关键词
风力发电
阻抗变化
最大功率点跟踪
爬山搜索法
Wind energy conversion
Impedance change
Maximum power point tracking
Hill-climbing search
