双PWM变流器的参数辨识与分析  

作　　者：赵春溢 蒋靖 田涛[2] 张宇森 

机构地区：[1]中电投东北新能源发展有限公司,辽宁沈阳110181 [2]华北电力大学控制与计算机工程学院,北京102206

出　　处：《科学技术创新》2019年第36期1-4,共4页Scientific and Technological Innovation

摘　　要：变流器作为风电机组的核心组件,保证着机组的发电质量和过程稳定,如何实现对变流器的稳定控制是风力发电过程中的重中之重。然而,由于SVPWM环节作为一个高频非线性环节存在于变流器中,致使难以使用PID控制器控制。本文通过对变流器中各个环节的整体参数辨识,证明变流器在其工作点附近可以近似线性化,为采用PID控制器控制变流器模块提供了理论依据,同时对控制器的参数整定具有指导意义。As the core component of the wind turbine, the converter ensures the power generation quality and process stability of the unit. How to achieve stable control of the converter is the most important in the wind power generation process. However,the SVPWM link, as a high-frequency nonlinear link in the converter, makes it difficult to control with the PID controller. In this paper, through the identification of the overall parameters of each link in the converter, it is proved that the converter can be approximately linearized near its working point.It also provides a theoretical basis for the use of PI controller to control the converter module, and at the same time has a guiding significance for the controller tuning parameters.

关 键 词：变流器 系统辨识 闭环控制 LABVIEW MATLAB 

分 类 号：TM46[电气工程—电器]