双PWM变换器励磁的交流励磁发电机励磁系统设计  

Design of Excitation System for AC Excited Generator Excited by Dual PWM Converter

作　　者：周求宽[1] 廖勇[1] 姚骏[1] 

机构地区：[1]重庆大学电气工程学院高电压与电工新技术教育部重点实验室,重庆市400044

出　　处：《电力系统自动化》2007年第6期77-81,共5页Automation of Electric Power Systems

基　　金：重庆市科委科技计划项目攻关项目资助。~~

摘　　要：分析了基于动态同步坐标轴系的交流励磁发电机双通道解耦励磁控制策略,提出了采用具有优良输入、输出特性的双脉宽调制(PWM)控制交—直—交电压型变频器作为交流励磁发电机的励磁电源。采用高速数字信号处理器TMS320F2812设计实现了双PWM变换器励磁的交流励磁发电机励磁系统实验平台。通过实验研究表明:基于动态同步坐标轴系的双通道解耦励磁控制策略能够实现交流励磁发电机有功、无功和转速的独立调节,发电机具备良好的动态响应能力;双PWM变换器具有功率双向流动、输入和输出谐波电流小、动态性能优良、功率因数可调等优点,是交流励磁发电机的理想励磁电源。The dual-passage excitation control strategy for AC excited generator （ACEG） based on dynamic synchronous reference frame is analyzed. The dual pulse width modulation （PWM） control AC-DC-AC voltage source converter with excellent input and output characteristics is proposed as the excitation power supply for ACEG. An ACEG experiment platform based on dual PWM converter is established by using high-speed digital signal processor TMS320F2812 and the system performance is assessed through the experiment. The independent regulation of active power, reactive power and rotating speed can be realized and the ACEG has good dynamic response ability. As the ideal excitation power supply for ACEG, the dual PWM converter has many advantages such as bidirectional power flow, low harmonics input and output currents, excellent dynamic response and adjustable power factor.

关 键 词：交流励磁发电机 动态同步坐标轴系 双通道励磁控制 双PWM变换器 

分 类 号：TM34[电气工程—电机]