变频装置中直流电压利用率的分析  

Analysis of Efficiency of DC Voltage in Frequency Converter Drive

作　　者：汪伟 杨宝龙 刘丽琴 由大伟 李明勇 

机构地区：[1]中船重工集团公司712研究所,武汉430064

出　　处：《船电技术》2005年第4期35-36,共2页Marine Electric & Electronic Engineering

摘　　要：在船用变频装置中,直流电压利用率是衡量调制方法优劣的重要标志之一。提高直流电压利用率可以提高逆变器的输出能力。本文讨论了几种常见调制方法的直流电压利用率,并进一步分析了200kW变频装置三电平SVPWM调制的直流电压利用率。Efficiency of DC voltage is very important for evaluating a modulation method in a marine converter drive. Increasing the efficiency of DC voltage can be helpful to increase the output voltage of the inverter. In this paper, the efficiency of DC voltage of several usual modulation methods are discussed. And the efficiency of DC voltage of a 200kW three-level SVPWM modulation is further analyzed.

关 键 词：直流电压利用率 调制比 SVPWM 直流电压 变频装置 利用率 调制方法 PWM调制 输出能力 逆变器 

分 类 号：TM933.2[电气工程—电力电子与电力传动] TM921.51