标准摘要
[中文适用范围]： “IEC 62751 的这一部分给出了计算基于“模块化多电平转换器”@的 HVDC 系统中阀门功率损耗所采用的详细方法，其中转换器中的每个阀门由多个自-包含@串联的两端可控电压源。它既适用于每个模块单元在每个开关位置仅使用单个可关断半导体器件的情况@，也适用于每个开关位置由多个开关组成的情况串联关断半导体器件（拓扑也称为“级联两电平转换器”）。主要公式针对两电平“半桥”配置给出，但附录 A 中也给出了指导关于如何将结果扩展到某些其他类型的 MMC 构建块配置。该标准主要针对绝缘栅双极晶体管 (IGBT) 编写，但也可用于指导其他类型的可关断半导体器件的情况。用过的。除换流阀@外，高压直流输电站@中其他设备的功率损耗不属于本标准的范围。本标准不适用于线路换向换流器高压直流输电系统的换流阀。” [外文原描述]： IEC 62751-2:2014 gives the detailed method to be adopted for calculating the power losses in the valves for an HVDC system based on the "modular multi-level converter", where each valve in the converter consists of a number of self-contained, two-terminal controllable voltage sources connected in series. It is applicable both for the cases where each modular cell uses only a single turn-off semiconductor device in each switch position, and the case where each switch position consists of a number of turn-off semiconductor devices in series (topology also referred to as "cascaded two-level converter"). The main formulae are given for the two-level "half-bridge" configuration but guidance is also given as to how to extend the results to certain other types of MMC building block configuration.
英文名称Power losses in voltage sourced converter (VSC) valves for high-voltage direct current (HVDC) systems - Part 2: Modular multilevel converters