一种新型的三相电流型多电平整流器  

New type of three-phase multilevel rectifiers of current-source

作　　者：王青松[1] 刘景夏[1] 胡冰新[1] 徐金龙[2] 

机构地区：[1]解放军理工大学理学院,江苏南京211101 [2]解放军理工大学科研部,江苏南京210007

出　　处：《解放军理工大学学报（自然科学版）》2012年第4期371-377,共7页Journal of PLA University of Science and Technology(Natural Science Edition)

基　　金：国家自然科学基金资助项目(50477033)

摘　　要：传统的多电平技术研究主要集中在电压型变流器,对电流型多电平的研究还不多,对电流型多电平整流器的研究更为少见。将对偶思想应用于电压型多电平的调控策略对偶到电流型多电平,并采用模块并联和载波相移技术,提出并实现了以三相电流型7电平整流器为代表的全新的三相电流型多电平整流器。着重分析了其工作原理和调制策略,在搭建DSP+CPLD数字平台的基础上实现了三逻辑载波相移SPWM信号的全数字化以及多路PWM驱动信号的产生,最终通过建立样机验证了控制策略和调制方法运用于电流型多电平整流器的正确性和可行性。Conventional research on mutilevel technology mainly focuses on voltage-source converters while less research on multilevel of current-source,saying nothing of multilevel rectifier of current-source.A new three-phase multilevel rectifier of current-source was introduced by extending control strategy from voltage source to currernt source.Three-phase multilevel rectifier of current source was studied,and 7 level three-phase rectifier of current source chosen as an example to illustrate its principle together with its control strategy.Besides finishing setting up the digital platform consisting of DSP and CPLD,the digital implementation method for 3-logic SPWM was presented when all the PWM driving signals were generated.Finally,the topology and its control strategy for three-phase multilevel rectifier of current-source were proved by experimental results.

关 键 词：三相电流型多电平整流器 DSP+CPLD 三逻辑信号 载波相移SPWM 

分 类 号：TM461.5[电气工程—电器]