从磁动势视角透析双馈发电机的能量传递  

Energy Transfer Analysis of DFIG From the Viewpoint of Magnetomotive Force

作　　者：王晓东[1] 

机构地区：[1]新疆维吾尔自治区水利厅,乌鲁木齐830013

出　　处：《船电技术》2014年第10期70-73,共4页Marine Electric & Electronic Engineering

摘　　要：双馈发电机以其励磁绕组采用空间三相对称绕组的结构特点,励磁电流采用幅值、频率、相位均可变化的交流电流调节方式,使之具有不仅能够充分利用转子动能,而且能够相对独立地调节有功、无功,并且还能大大减少对电网扰动的独特优势,因而得到日益广泛地应用。本文从双馈发电机等值电路和相量图入手,通过旋转磁动势并遵循能量守恒原理对双馈发电机能量传递进行分析探讨。Doubly-fed induction generator（DFIG） is widely used due to its unique characteristics of symmetrical three-phase winding and AC current regulation with variable amplitude, frequency and phase. The DFIG can utilize the kinetic energy of the rotor efficiently, and regulate the active and reactive power independently. The disturbance to the grid can be reduced as well. This paper investigates equivalent circuits and vector diagram of DFIG, and analyzes its energy transfer based on the principles of rotating magnetomotive force and conservation of energy.

关 键 词：双馈发电机 相量图 旋转磁动势 能量守恒 能量传递 

分 类 号：TM37[电气工程—电机]