摘要
在剖析风力发电励磁系统中矩阵式变换器空间矢量调制算法基本原理的基础上,指出传统的直接反正切算法在扇区划分及扇区角判定中存在两大缺陷,揭示了该缺陷形成的根本原因。针对该算法在用DSP等处理器进行算法实现中存在扇区划分及扇区角判定数据处理量大、精度低、编程实现复杂等缺点,提出了二倍角反正切算法,论述了该算法的基本原理,并通过构建SIMULINK仿真模型对两种算法进行了对比分析。结果表明,二倍角反正切算法编程实现简单、系统数据处理量减少50%。
Two major defects of the traditional direct arc tangent algorithm in the judgments ot sector partition and sector angle are pointed out by deeply analyzing the space vector modulation algorithm of the matrix converter in the wind power excitation system, and the fundamental reasons leading to the defects are revealed simultaneously. To counter those defects such as a large amount of data process- ing, low accuracy and complexity of programming of the traditional sector algorithm in the judgments of sector partition and sector angle by using DSP techniques, a new algorithm named two-double-angle arc tangent is proposed, and the fundamental tenets of the new algorithm are given. Moreover, a comparison analysis of the two algorithms is made by SIMULINK models. The simulation results shown that： by using the two-double-angle arc tangent algorithm,the programming becomes simpler and the amount of data processing is reduced 50% ,thus the precision of the system is improved greatly. This work are supported by Scientific research fund project of North China University for Nationalities （project number：2009Y026） and by Independent scientific research fund project of North China University for Nationalities （project number： 2011ZYC031 ）.
出处
《可再生能源》
CAS
北大核心
2012年第6期35-39,43,共6页
Renewable Energy Resources
基金
北方民族大学科研基金项目(2009Y026)
北方民族大学自主科研基金项目(2011ZYC031)
关键词
矩阵式变换器
风力发电
空间矢量调制
扇区算法
二倍角反正切算法
matrix converter
wind power generation
space vector modulation
sector algorithm
two-double-angle arctangent algorithm
