大功率变频高速搅拌机的研制

论述了将变频调速技术应用于设计制作大功率变频高速搅拌机,通过改变电压频率和电压幅值来达到电机调速目的的新型控制技术。介绍了以89C51单片机为控制核心,以SA866专用SPWM控制芯片和PS21255智能功率模块为主控模块的大功率数字式变频调速器和小体积大功率一体化变频专用高速电机的设计,以及变频调速的多级谐波抑制、小体积大功率高速变频电机散热和噪声抑制等问题的解决方法。

Study on High-power and High-speed Frequency Conversion Mixer

This paper simply discussed upon speed regulating by frequency converting used in design and manufacture of high-power and high-speed frequency conversion mixer, and the new control technology about the speed regulation of motor by changing the frequency and the amplitude of voltage. Designs are introduced on high-power digital frequency-converting speed regulator by using the single chip computer 89C51 as the control core, taking SPWM controlling chip special for the SA866 and PS21255 IPM power module as the mainly controlling module and high-speed conversion motor with small volume and high-power. The settlement to multistage harmonic suppressing for speed regulating by frequency conversion, and heat dispersion and noise suppressing for high-speed and small-volume conversion motor are also presented.