中文摘要：

基于三相升-降压PWM整流系统在舰船电力系统、海上试验设备、直流电机控制等领域的广泛应用前景,分析现有升-降压整流系统的不足,结合三相升-降压PWM整流器的工作原理及稳态相量关系,着重推导分析整流器各稳态参数与其稳态工作点之间的关系,得出稳态工作点对系统参数取值范围的限制,总结参数设置及稳态工作点的变化规律,为系统具体设计及其性能的改善提供有利的参考依据。

英文摘要：

Taking account of the broad application prospects of three-phase step-up / down PWM AC / DC rectifier in the fields such as electric power systems and electric propulsion of ships,as well as control of DC motors,the disadvantages existing in the commonly used three-phase step-up / down AC / DC rectifiers were analyzed in this paper.According to the working principle and the steady-state phasor relationship of three-phase step-up / down PWM rectifier,the relationship between the steady-state parameters and their steady-state operating points was emphatically derived and analyzed,thereby the range of system parameters restricted by steady-state operating points was obtained and the parameter setting and change law of the steady-state operating points were concluded,providing a reference for the detailed design of the system and improvement of its performance.