基于Simulink的卡车电动空调系统仿真研究

Simulation Research of Truck Electric Air Conditioning System Based on Simulink

摘要: 传统卡车空调系统的动力来源于发动机，发动机工况的变化会影响空调的制冷性能，导致制冷系统工作稳定性差，而电动空调动力来源于蓄电池，不受发动机工作状态的影响，空调系统的稳定性更佳。本文以某种卡车电动空调系统为研究对象，建立了模拟车室温控模型，通过温控模型实时改变模拟负荷发生器的输出功率来达到模拟车室内和卡车车室有相同温度变化曲线，利用仿真软件Matlab/Simulink建立卡车电动空调系统仿真模型，并仿真模拟了定工况定转速下卡车车室降温过程，最后通过实验结果与仿真结果对比，得到了与仿真值误差在10%以内的实验值，从而证明了采用模拟车室温度控制模型用来进行实验研究的可行性。

Abstract: In traditional truck air conditioning systems, the power comes from the engine, and the engine’s operating condition affects the air conditioning’s cooling performance, leading to poor stability of the cooling system. However, the power source for electric air conditioning is the battery, which is not affected by the engine’s operating state. Therefore, the stability of the air conditioning system is better. In this study, a certain truck electric air conditioning system is taken as the research object, and a simulation chamber temperature control model is established. The output power of the simulated load generator is changed in real time to achieve the same temperature change curve in the simulated car cabin and the truck cabin. The truck electric air conditioning system simulation model is established using simulation software Matlab/Simulink. The cooling process in the truck cabin under a fixed working condition and rotational speed is simulated. Finally, the experimental results are compared with the simulation results, and the experimental value with an error within 10% of the simulation value is obtained, thus proving the feasibility of using the simulation chamber temperature control model for experimental research.