关键词: 永磁发电机, 空间矢量脉宽调制, 过调制, 稳压

Abstract:

In order to achieve the goal of stabilizing voltage and improving power quality of aviation multiphase permanent magnet generator with wide rotation speed range, an improved SVPWM over-modulation strategy was adopted. This method does not need to calculate angles separately according to the value of modulation ratio, but unifies all the regions, which avoids complex calculation and was easy to implement. Its feasibility was proved in simulation model, which lays a foundation for the combination of the over-modulation strategy and the single current regulator flux weakening control system to control the aviation power system.

Key words: permanent magnet generator, space vector pulse width modulation （SVPWM）, over-modulation, voltage stabilization