Design of Soft-Switching Control Circuits in Vibrating Screen Invert Power Source

Abstract

A new control system of vibrating screen invert power source was designed according to the question of step regulation of current and power in vibrating screen in the use of MCU. Zero-voltage switching inverter is used to reduce the loss of switching devices in the main circuit and MSP430 MCU is the core of the control circuit. A PI voltage regular with a filter and a feedback type, IGBT over-voltage protection circuit and PWM pulse generating and drive circuit are designed. Experimental results show that the inverter power has high precision, fast response, and anti-interference ability, and the system can obtain better steady state accuracy and dynamic characteristics and greatly improve the efficiency of shaker.