兆瓦级永磁直驱风力发电模拟实验系统设计

Simulation Experimental System Design of MW-level Permanent-magnet Direct-drive Wind Power Generation

构建完备的永磁直驱风力发电模拟实验系统,并以此进行变流器与控制算法的实验研究,是开展风力发电变流器系统关键技术研究的必要与有效手段。为有效缩短实验系统开发周期,搭建了基于RT-Lab实时仿真系统的兆瓦级永磁直驱风力发电模拟实验系统,其主要包括脉宽调制整流器控制和六相永磁同步电机矢量控制两大部分。特别地,为实现六相永磁同步电机的完全解耦,提出了一种基于矢量空间解耦变换的同步旋转坐标变换矩阵,将基波电流分量与谐波电流分量实现解耦,同时转化为不同子空间的直流量。实验结果证明了该模拟实验系统的可行性和有效性。

Building a complete simulation experimental system of permanent-magnet direct-drive wind power generation for the research of converter and control algorithm is necessary and effective means for the key technology development of wind power converter system.In order to shorten the experimental system development cycle,a MW-level simulation experiment system is constructed based on RT-Lab real-time digital simulator,which comprises two main parts,a pulse width modulation (PWM) rectifier control system and a six-phase permanent-magnet synchronous motor (PMSM) vector control system.In order to make the six-phase PMSM completely decoupled,a novel synchronous rotation transformation matrix is employed to decouple the fundamental component and the harmonic components and transfer them into DC quantities in the respective subspace. Experimental results demonstrate the feasibility and effectiveness of the platform.