SVPWM Variable Frequency Speed Regulation System Based on DSP

Space vector pulse width modulation( SVPWM) is a method to control the AC asynchronous motor.SVPWM technology applied in AC speed regulation system can not only improve the shortcoming of low voltage utilization in the pulse-width modulation(PWM) technology,but have little torque ripple,low noise advantages.In this paper,a SVPWM variable frequency AC asynchronous motor speed regulation system employing a core TMS320LF2407A-type DSP chip was presented,the basic principle of voltage space vector control had been introduced,and the design of hardware and software in the speed regulation system was analyzed.The obtained experimental results indicate that the proposed speed regulation system has high voltage utilization,small harmonic current,high control precision,and has excellent control effect.