低频输电技术原理之一—— M^(3)C的数学模型 与等效电路  

Principles of Low Frequency Power Transmission Technology:Part 1-Mathematical Model and Equivalent Circuit of M^(3)C

作　　者：徐政[1] 张哲任[1] XU Zheng;ZHANG Zheren(College of Electrical Engineering,Zhejiang University,Hangzhou 310027,China)

机构地区：[1]浙江大学电气工程学院,杭州310027

出　　处：《浙江电力》2021年第10期13-21,共9页Zhejiang Electric Power

摘　　要：低频海底电缆输电技术在远海风电送出和海上风电场构网方面具有竞争优势,而M^(3)C(模块化多电平矩阵变换器)是低频输电技术的核心元件。针对M^(3)C的数学模型与等效电路展开研究,介绍了低频输电技术的发展背景。通过将M^(3)C看作为已广泛应用的MMC(模块化多电平换流器)的结构扩展,给出了类似于MMC的M^(3)C拓扑结构和变量命名规则。在此基础上推导出了M^(3)C在abc三相坐标系中的数学模型,并在αβ0坐标系中建立了M^(3)C的数学模型,根据M^(3)C在αβ0坐标系中的数学方程,推导出了对应的等效电路。Low-frequency submarine cable power transmission technology has competitive advantage in offshore wind power transmission and offshore wind farm network construction,and the modular multilevel matrix converter(M^(3)C)is the core component of low-frequency power transmission technology.This paper focuses on the mathematical model and equivalent circuit of the M^(3)C.First,the development context of low-frequency power transmission technology is described.By considering the M^(3)C as an extension of the widely used modular multilevel converter(MMC),the paper introduces M^(3)C topology and variable naming rules which are similar to the MMC.On this basis,the mathematical model of the M^(3)C in the abc coordinate system is derived,and the mathematical model of M^(3)C is established in theαβ0 coordinate system.According to the mathematical equation of the M^(3)C in theαβ0 coordinate system,the corresponding equivalent circuit is derived.

关 键 词：低频输电 M^(3)C ABC坐标系 αβ0坐标系 数学模型 等效电路 

分 类 号：TM721[电气工程—电力系统及自动化]