全波升压式C-dump变换器发电运行时两种工作模式的分析与比较  

Simulation and Comparison of Separate Operating Mode and Combining Operating Mode of Full-Wave Boosting C-dump Converter

作　　者：纪昉[1] 周波[1] 穆新华[1] 

机构地区：[1]南京航空航天大学自动化学院,南京210016

出　　处：《南京航空航天大学学报》2001年第2期113-117,共5页Journal of Nanjing University of Aeronautics & Astronautics

摘　　要：为使无刷直流电机减小体积、减轻重量、降低成本 ,选择了电容储能型 ( C-dump)变换器作为飞机起动 /发电系统主电路 ,考虑发电运行的性能要求对变换器拓扑作了改进。改进得到的全波升压式 C-dump变换器可作为双向功率流变换器 ,应用于无刷直流电机起动 /发电系统 ,具有重要的实用价值。全波升压式 C-dump变换器由两级功率变换电路构成 ,发电运行时有两种工作模式 :单级工作模式和两级工作模式。本文分析了 C-dump变换器发电运行的原理和特性 ,介绍了这两种工作模式的原理和特性 ,详细分析了两种工作模式的输出电压纹波、主开关管占空比、发电效率与电机转速的关系 。Considering the trend of reducing the volume, weight and cost of brushless DC motors, C dump topology is used as the power stage of airplane starter/generator system, with some improvements on the topology to achieve better performance in regenerating mode.Operation principles and characteristics of the regenerating mode are analyzed.The basic principles and operating characteristics of two operating modes (separate operating mode and combining operating mode) applied for generative operating mode of full wave boosting C dump converter are introduced.The relationship between rotor speed and the voltage ripple,duty ratio of power switch and efficiency of generator is discussed in detail. In conclusion, the simulating analysis and the comparison based on C dump converter and electric machine of airplane of brushless starter/generator double function mode are made.

关 键 词：无刷电机 功率变换器 发电运行 工作模式 C-DUMP变换器 全波升压式 

分 类 号：TM301.2[电气工程—电机] TN86[电子电信—信息与通信工程]