摘要
文中介绍了利用EDA设计软件Multisim7和Ultiboard7,采用模拟、数字及模数混合集成器组成的三相对称SPWM调制器的设计、仿真过程。简述了幅值、频率稳定可调的三相对称正弦交流信号的产生方法及电路的设计过程。在频率的选择与显示、启动/运行转矩的控制和输出换相控制及保护复位等功能上均达到三相变频器对调制信号的相应要求,为变频器在低端用户的推广使用创造了条件。
This paper discusses the design and simulated process of three-phase symmetrical SPWM that consists of simulation,numeral module integrated pieces by using the EDA software(Multisim7& Ultiboard7).Briefly introduces the methods of generating three-phase symmetrical sine exchanges signal with stability amplitude modulation and frequency.It can meet the demand of functions such as frequency choice and display,operation start control and output control etc.It makes it possible of the frequency modulator extending to the end users.
出处
《机电工程技术》
2007年第12期65-67,共3页
Mechanical & Electrical Engineering Technology
