无位置传感器控制技术在直驱变流器中的应用

Position Sensorless Control Technology in Direct-driven Converter Application

直驱型风电机组具有能量转换效率高、可靠性高、并网功率控制灵活等优点,在风力发电领域具有非常广阔的市场前景。电机的转速和转子位置角是直驱变流器控制策略中的重要参数。介绍了一种基于无位置传感器控制技术的转速和位置测量方法,该方法简单、快速、动态响应好。阐述了直驱型风电变流器的拓扑结构和控制策略,以及无位置传感器控制技术的测量原理和控制方法。通过Matlab/Simulink仿真和现场工程应用,验证了该控制技术的有效性和可靠性。

Direct-driven wind generation system is considered to be all important research direction in wind generation technology area due to its superiorities of being gearless, no slip rings and brushes, flexible power control ability, etc. Motor＇s rotor position and speed are important parameters in control of direct-driven converter.The measurement metllod of rotor＇s position and speed is mainly presented.The topology and control method of direct-driven converter, measurement principle of position sensodess control are proposed.This paper presents the simulation of Matlab/ Simulink and engineering application to prove the control technology＇s availability and reliability.