Design And Research Of Control System Of Home Power Generation Equipment

With the social development, the improvement of people's living standards and the world's emerging energy crisis, Supply of electricity increasingly tense situation is in many parts of the world. During the peak or power failure situation, Man-made or non-human sudden blackouts occur frequently. Home Power Generation Equipment has been widely used in many families, as emergency or standby power, Because its characteristics has Compact, Mobile Convenience, Efficient, Start Rapid and Flexible Control and so on. In order to improve people's standard of living of modern society and raise our international competitiveness in internal-combustion engine power generation equipment, Researching and developing a more intelligent and complete control system based on the traditional Home Power Generation Equipment control method have a great practical significance.This paper analyzes the domestic and international Home Power Generation Equipment control status with a wide search. Combination of the specific structure and working principle of the existing Home Power Generation Equipment, Detailed analysis the Home Power Generation Equipment control methods and working principle. Researched and designed a control system of Home Power Generation Equipment by using Microchip's PIC18F458 microcontroller for the master chip. It is able to detect the supply of main electricity, Decide to start and stop the Home Power Generation Equipment automatically according to the supply, and control switches between main electricity and Home Power Generation Equipment. During the running in Home Power Generation Equipment, its gasoline engine running in real-time detection, in addition to a lead-acid battery SOC is estimated, Home Power Generation Equipment on a regular basis the trial operation and maintenance, work status of the alarm and so on.Whether the hardware design or software design of control system, all use of modular design method, and divided in control function. Hardware includes Main electricity detection, Speed of engine detection, Stepper motor driver, Power output voltage detection, Battery voltage and current of charge or discharge detection, Gasoline level detection, Temperature detection, Engine Oil Pressure Test, Relay Control, and Calendar Clock Module. Software includes the Main program, Start engine subroutine, Working state detection subroutine, Battery SOC estimation subroutine, and Alarm instructions subroutine. Modular design method simplifies the design of hardware circuit and the preparation of software program. Because of the bad working environment, the hardware circuits have electrical isolation. And Software program used Digital filtering approach to Interference Isolation. That's for Reliability and stability of the control system.After simulation running and field testing, the work of each module of this system is running normal and coordinated well. It has fast response, and basically be able to complete the full functionality of the system to achieve the purpose and design of control system.