Abstract
The supercritical CO2 (S-CO2) Brayton cycle has recently been gaining a lot of attention for application to solar energy. This paper introduces the MATLAB simulation experiment of supercritical carbon dioxide power generation system, and analyses relevant important operation parameters for supercritical CO2 effect of power system performance. The mathematical model of supercritical CO2 power equipment system is established on modular non-linear method using Matlab and its software package Simulink. Using this dynamic simulation model, the loading and unloading process characteristics of supercritical CO2 power device were analyzed. The results show that: the rotor speed, turbine exhaust, motor power and mechanical power loss is slowly strengthened with the increase of heating output, then increased to the maximum at the same time immediately. Thereafter, the rotor speed, turbine exhaust, motor power and mechanical loss power is slowly decreased and remain stability. The dynamic matching characteristics of compressor, turbine and other equipment in the system are good, and the operation is stable.
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