摘要
建立了三相电压型PWM整流器的数学模型,分析了直接功率控制的原理,为克服传统直接功率控制开关频率不固定稳定性差的缺点,结合空间矢量控制策略设计了一种预测直接功率控制(P-DPC)方法,并通过仿真对其进行验证。研究和仿真分析表明,P-DPC的应用使系统具有结构算法简单、动态响应快、高功率因数、开关频率固定和THD低等特性。
This paper established the mathematical model of the three - phase voltage - type PWM rectifier and analyzed the principle of the direct power control. In order to overcome the unstable frequency and poor stability of the traditional direct power control switch,a predictive direct power control（P - DPC）method combined with the space vector control strategy was designed and verified through simulation. The research and simulation analysis showed that the application of the P - DPC gave the system the features like simple structure and algorithm,quick dynamic response,high power factor,constant switching frequency and low THD.
出处
《电测与仪表》
北大核心
2014年第13期76-79,共4页
Electrical Measurement & Instrumentation
