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. This work is supported by National Basic Research Program of China (973 Program) (No. 2012CB215103) and Program for New Century Excellent Talents in University (No. NCET-11-0871).