Research On The Control System Of The Biogas Generator Sets Operating In Parallel

As non-renewable energy consumption increased, a large number of biological waste exist in our country, and there are air pollution problems, biogas power generation is an effective technology to solve these problems. How to operate biogas generator sets into parallel is its core technology, this thesis is based on the running characteristics of biogas power generation units and requirements of operating in parallel, to research and design the control system of biogas generator sets operating in parallel, and put forward the control strategy operating in parallel of the control system finally.This thesis choosed the method of automatic quasi-synchronization on the basis of comparison of three parallel control methods, designed the control system of the biogas generator units, choosed sensors needed and designed the hardware of the control system. After studying the characteristics of the system communication network, I picked RS232as the communication interface based on c the MODBUS communication protocol, completed the program and debug of the communication module.This thesis choose MOTOROLA MC9S12DP512chip as core controller and design the current and voltage signal detection circuit. This thesis analysized the specific process of parallel and detach, design the control strategy and finished the control programs debugging, after the test, the controller can detect the current and voltage and regulate the voltage and speed.This thesis built the diesel generator units in the use of simulink toolbox in MATLAB software, and ran the simulation calculation.Then this thesis analysied the change of power and speed in different situations including single generator and generator units. Then this thesis optimized the speed control,study the parallel and detach of the generator units, which proved the strategies right.