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首页> 外文期刊>Power Electronics, IET >Grid connected three-phase multiple-pole multilevel unity power factor rectifier with reduce components count
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Grid connected three-phase multiple-pole multilevel unity power factor rectifier with reduce components count

机译:并网三相多极多级单位功率因数整流器,减少元件数量

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摘要

This study presents a simple design and cost-effective rectifier topology based on five-level multiple-pole structure. Better efficiency and low grid current total harmonic distortion is achieved with the constant low switching frequency operation. The proposed rectifier topology consists two set of VIENNA rectifiers to form a five-level input characteristic which is known as five-level/multiple-pole multilevel unity power rectifier (5L-M2UPFR). Observer techniques are designed for the proposed in-phase quantities carrier-based average current control scheme for the rectifier. Hence, unity power and input current shaping is achieved with the reduced sensor measurements. In addition to that, a proportional+resonance controller is implemented in the grid voltage observer to achieve dynamic response and better tracking under unbalanced grid condition.
机译:本研究提出了一种基于五级多极结构的简单设计且具有成本效益的整流器拓扑。恒定的低开关频率操作可实现更高的效率和更低的电网电流总谐波失真。拟议的整流器拓扑包括两组VIENNA整流器,以形成五级输入特性,即五级/多极多级多级单位功率整流器(5L-M2UPFR)。观测器技术是针对提出的整流器同相量基于载波的平均电流控制方案而设计的。因此,通过减少传感器的测量就可以实现统一的功率和输入电流整形。除此之外,在电网电压观测器中实现了比例+谐振控制器,以实现动态响应并在电网不平衡的情况下更好地跟踪。

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