C-dump变换器的发电运行特性研究

介绍了一种可用于无刷起动／发电双功能系统的变换器拓扑－－Ｃ－ｄｕｍｐ变换器，分析了其发电运行的基本原理。Ｃ－ｄｕｍｐ变换器发电运行时存在电机相电流利用主经低、这大的问题。为克服上述缺点，提出了一咎改进型Ｃｄｕｍｐ变换器拓扑。文中对采用这种改进型变换器的发电系统的最低工程转速限制和系统发电特性进行了详细的讨论，分析了发电系统的输出电压及效率与转速的关系。研究结果表明，采用改进型Ｃ－ｄｕｍｐ变换器的发

Study on Characteristics of C-dump Converter Operated in Generative Mode

A converter topology applied for brushless starter/generator double function system,named C dump converter is introduced. Its basic principles under generative operation mode are studied. Some problems about the low using ratio of generator phase current and the large volume of filter inductance to the converter are analyzed. Therefore an improved converter topology is presented to solve these problems. The lowest operating rotor speed limitation and operating characteristics of the generative system based on the improved converter are discussed in detail. The results indicate that the generative system has very wide range of operating rotor speed and better output characteristics, and the converter has advantages in efficiency compared to other converters when it is applied for aircraft generative system.