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针对在航空起动发电系统中发电运行状态下,六相永磁同步发电机在发动机转速变化的情况下如何保证输出端直流电压在270 V恒定不变,研究了一种基于SVPWM的最大四矢量的整流控制技术,通过对发电机发出的六相电流进行解耦,得出参与机电能量转换的α-β子空间和x-y谐波子空间,对两个子空间分别进行控制,有效地保证了输出的直流电压恒定不变。通过在Simulink上建立六相永磁同步发电机发电整流系统的仿真模型,得出的仿真结果证明了采用方法的可行性。
Aiming at the problem of how to ensure the output DC voltage to be constant at 270 V under the condition of changing the engine speed under the condition of generating power in aero-start power generation system, a maximum four-vector SVPWM Rectifier control technology decouples the six-phase current from the generator and obtains the α-β subspace and the xy harmonic subspace involved in the electromechanical energy conversion, respectively, and controls the two subspaces separately, effectively ensuring that the output DC voltage is constant. By simulating the simulation model of rectifier system of six-phase permanent magnet synchronous generator in Simulink, the simulation results show that the method is feasible.