1.5 MW永磁直驱风机控制策略优化分析

摘要

In this paper, using MATLAB platform to build the 1. 5 MW PMSG simulation model in order to effec⁃tively analyze the influence of density variation on the annual output power of fan. And the power signal feedback method is embedded into the simulation model, which can better simulate the whole process control of fan opera⁃tion. By comparing the simulation data with the field data, the accuracy of the model is verified. Based on this model the power curve of the two control strategies of Kopt fixed and Kopt variation are obtained. The data analysis shows that, the fan power after optimization can improve the average of about 1%.%为有效分析密度变化对风机全年输出功率的影响，利用Matlab平台搭建了1.5 MW直驱风机仿真模型，并将功率信号反馈法嵌入此仿真模型，能较好模拟风机运行过程的全程控制。通过对仿真数据与现场数据的对比，验证了模型的准确性，基于此模型，得出Kopt固定和Kopt变化两种控制策略的功率曲线，对其数据分析可知，优化后的风机全年功率可平均提升约1％。