摘要
本文介绍了一种新型的多模块冗余并联变频器的研制。该变频器由多个30kVA功率模块组成,采用水冷的冷却方式,使用冗余并联控制技术,具有模块可在线热插拔、高可靠性、易于维护的特点,是一种全新概念的高可靠性变频器。变频器的功率模块的整流器采用双Boost拓扑结构;逆变器采用三个单相桥通过LC滤波器后合成为三相输出。每一个功率模块都是可独立运行的变频器并且具备并机控制接口,采用32位微控制器作为控制核心,实现了模块整流器和逆变器的统一控制以及变频器整机的冗余并联控制。多模块冗余并联变频器采用有连线冗余并联控制架构,使用高可靠性环形拓扑控制器局域网通讯,结合主机竞争、均流控制等核心算法实现了多模块冗余并联运行,并且实现各模块负载均分。通过试验验证表明研制的多模块冗余并联变频器运行可靠,各项技术指标满足设计要求。
In this paper,a new type of multiple module redundant parallel frequency converter.The converter is composed of more than 30 kVA power module,with the cooling system of water-cooling and use of redundant parallel control technology.The characteristics of the converter is hot plug,high reliability,easy maintenance.This is a new concept of high reliability frequency converter.The power module of the converter adopts double Boost rectifier topology;Using three single-phase bridge inverter through LC filter for three-phase output.Each power module can be run independently and have interface with redundant parallel control,using 32-bit microcontroller as the control core,realized the unification control of the rectifier and inverter,also converter redundant parallel control.More module redundant parallel converter use the attachment redundant parallel control architecture,using high reliability ring topology CAN communications,combined with the host competition and load sharing control,those core algorithm to achieve the module redundant parallel operation,load sharing and implement the modules.Through test show that there are more developed module redundant parallel converter reliable operation,the technical indicators meet the design requirements.
引文
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