VACON变频器在直驱型风力发电系统独立变桨中的应用可行性分析

Vacon NX Converters Applied in Individual Pitch Control in Direct-drive Wind Power System

直驱型风力发电系统是一种应用前景看好的变速恒频风力发电方案,为提高风能的利用率和风力发电经济效益,提高系统稳定性降低维修成本,迫切要求对风力机进行独立变桨控制。本文介绍了直驱型风力发电系统的拓扑原理和风力机的特性曲线,并以基于同步电动机的变桨执行机构为平台,介绍了Vacon NX型变频器的控制功能,并对其在独立变桨场合的应用可行性进行了分析,由Vacon NX系列变频器的各项参数和性能指标可知,其应用于变桨控制中是可行的,是实现高效、可靠独立变桨控制的良好途径之一。

Direct-drive wind power generator system, which can realize variable speed constant frequency wind generation, is a technology that has a good prospect. In order to improve the utilization ratio of wind power and yield good economic returns, it is essential to use individual pitch control, which can increase the stability and decrease the maintenance cost at the same time. In this paper, the topology of direct-drive wind power generator system is presented and the characteristics of wind turbine are also depicted. The parameters and features of Vacon NX converters are introduced in a pitch control system based on PMSM, and the feasibility is also analyzed. It can be conclude that applying Vacon NX converters in individual pitch control is practical and high performance can be achieved.