Research And Implementation Of Digital Inverter For Portable Gasoline Generator

With high flexibility,reliability and sustainability,portable gasoline generator inverter power supply is widely used in medical,communication,field operation and rescue and other fields.This paper introduces the system structure and working principle of the main circuit of the inverter power supply,determines the scheme selection of the main circuit of the inverter power supply,and introduces the internal structure of the control system of the inverter power supply,the motor,rectifier circuit,inverter circuit and main control chip are analyzed and selected,and the overall structure of inverter power supply is determined.This paper studies the principle of the application of digital frequency conversion technology in gasoline generator,and establishes the control system of inverter power supply,and introduces the internal structure of the control system of inverter power supply,three-phase drive rectifier system,throttle control system and signal feedback system are designed.A phase-controlled rectifier drive circuit is designed for the threephase rectifier drive system,which includes a synchronous circuit,a thyristor drive circuit and a DC voltage feedback circuit,a double-closed-loop throttle control scheme,which is composed of the front-stage feedback control of the load voltage and the speed feedback control of the generator,is proposed.The inverter circuit of gasoline generator is designed and simulated,including main circuit,drive circuit and signal acquisition circuit.The main circuit of inverter is simulated and analyzed The simulation circuit model of the three-phase rectifier drive system is established,and the simulation results prove the correctness of the design and parameter selection of the phasecontrolled rectifier drive circuit.The experimental platform of gasoline generator inverter power supply based on EG8060 is established,and the experimental results are analyzed.The overall layout of the inverter power supply is optimized to reduce the internal heating and reduce the size of the prototype.