Power electronic losses of a customer-end inverter in low-voltage direct current distribution

P. Nuutinen, A. Mattsson, T. Kaipia, P. Peltoniemi, A. Pinomaa, A. Lana, J. Karppanen, P. Silventoinen
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引用次数: 5

Abstract

A low-voltage direct current (LVDC) distribution system comprises a rectifier, a DC network, and customer-end inverters (CEI) responsible for the AC supply to the electricity end-users. The CEIs can be implemented as single-phase or three-phase ones; in this paper, feasible single- and three-phase topologies are introduced and their losses are calculated using nine different power switches. Three commercially available IGBT, MOSFET, and SiC MOSFET power switches are selected for comparison. In this application, a galvanic isolation between the DC network and the customer is required. The isolation is implemented by using an isolating DC/DC converter at the CEI supply, and therefore, the input voltage of the CEI can be different from the DC network voltage. In this paper, the effect of the supply voltage level on the losses of the CEI is calculated for the nine power transistors in single- and three-phase topologies.
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低压直流配电中客户端逆变器的电力电子损耗
低压直流(LVDC)配电系统包括整流器、直流网络和负责向最终用户供电的客户端逆变器(CEI)。cei可以实现为单相或三相;本文介绍了可行的单、三相拓扑结构,并计算了9种不同功率开关的损耗。选择三种市售的IGBT、MOSFET和SiC MOSFET功率开关进行比较。在这种应用中,需要在直流网络和客户之间进行电流隔离。隔离是通过在CEI电源处使用隔离DC/DC转换器来实现的,因此,CEI的输入电压可以不同于直流网络电压。在本文中,我们计算了在单、三相拓扑结构中9个功率晶体管的电源电压水平对CEI损耗的影响。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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