升降压直流调速文献综述.doc

升降压直流调速文献综述
本科生毕业论文(设计)
专业文献综述
题目:
姓名:
学院:
专业:
班级: 学号: 升压降压式直流脉宽调速系统设计蒋菲菲工学院农业电气化及自动化电气101 32110128 指导教师: 陈士进职称: 讲师
2014 年 2 月 28 日
南京农业大学教务处制
升压降压式直流脉宽调速系统设计
作者蒋菲菲指导老师陈士进
摘要:PWM控制修改器是能经济有效地采用中低压直流驱动,在始末控制上应用直流逆变系统设计简单和自然换向运行可靠性的优点转换器。由于高的直流电压,产生大于供电电源的峰值电压,交流–直流升压转换器特别适合作为前端电源在变速驱动系统将其电源电压为可变的直流电路。在本文中,动态模型和稳态等效一个单相交流直流升压转换器供
电的直流电动机PWM控制电路的方法与统一。目前,对转换器的输入输出特性进行了讨论和验证,经过测量,计算和模拟结果很接近,证明该模型是非常充足和准确。
关键词: 降压-升压式直流变换器;PWM发生器;直流电机
The design of step-up step-down dc pulse width speed
control system
Author Jiang fei fei Tutor Chen shi jin
Abstract: PWMcontrolled rectifiers can efficiently and economically be employed in lowand medium power applications of dc drives and in front-end converters of rectifier–inverter systems while maintaining the advantages of design simplicity and operation reliability of mutated schemes. Due to the high dc voltage that is produced which is greater than the peak voltage of the utility supply, the ac–dc buck-boost converter is especially suited as a front-end power source in variable-speed drive systems to convert the utility supply voltage into a variable dc link voltage where a single-phase or a three-phase utilities power supply is available. In this paper, the dynamic model and steady state equivalent circuit of a single-phase ac–dc buck-boost converter fed dc motor with uniform PWM control is presented. The wave