Design and Implementation of Novel Single-Stage High Voltage Electrostatic Generator for Agricultural Plant Protection Machine

A single-stage switching power supply circuit of the electrostatic sprayer for agricultural plant protection machines with the integrated switch for the front stage and the rear stage is proposed and designed. The power converter is connected in series with at least one front power converter and one rear power converter. In order to simplify the control, only one active switch of the proposed single-stage stage is adopted to achieve synchronous control. Since the multiple stages of power conversion circuits are added in the front stage, the turns ratio of the transformer can be reduced to shrink its size and the voltage stress of the switch can be decrease to less than 1 kV. Therefore, the power supply circuit would be more suitable for electrostatic spray apparatus of agricultural plant protection machine. The accuracy of the proposed integrated single-stage topology and control method are verified by simulation and experimental results.