一种基于PID控制算法的分布参数法压缩式空气源热泵模型  

A Compressed Air Source Heat Pump Model by Distributed Parameter Method in PID Control Algorithm

作　　者：龚光彩[1] 黄喜文 周富玉 GONG Guang-cai;HUANG Xi-wen;ZHOU Fu-yu(College of Civil Engineering,Hunan University,Changsha 410082,China;Institute of Shanghai Architectural Design and Research Co.,Ltd.,Shanghai 200040,China)

机构地区：[1]湖南大学土木工程学院,长沙410082 [2]上海建筑设计研究院有限公司,上海200040

出　　处：《科学技术与工程》2020年第15期6066-6072,共7页Science Technology and Engineering

基　　金：国家科技支撑计划(2015BAJ03B00)。

摘　　要：采用分布参数法建立单、双级压缩式空气源热泵的热力学模型,并且将比例积分微分(proportional-integral-derivative,PID)控制算法应用到模型计算中,形成一种基于PID控制算法的全系统循环分布参数模型。将建立的模型在C++环境中运行,用实验数据验证模型精度。结果表明:模型充分利用了分布参数法和PID控制算法的优点,与传统集总参数法建立的模型相比,模型具有更高的计算精度,其中双级压缩式空气源热泵模型的模拟制热性能系数(COP)与实验数据的平均相对误差为4.91%;加入PID控制算法后,提高了模型的运算速度,双级压缩式空气源热泵模型循环迭代5次就达到了收敛。The thermodynamic model of single-and two-stage compression air source heat pump was established in distributed parameter method,and the PID(proportional-integral-derivative)control algorithm was applied to the model calculation to form a system-wide cyclic distribution parameter model based on PID control algorithm.The established model was run in a C++environment and the experimental data were used to verify the accuracy of the model.Comparison between the experimental data and the model simulation results showed that the model made full use of the advantages of the distributed parameter method and the PID control algorithm.Compared with the model of the traditional lumped parameter method,the model had higher calculation accuracy.The average relative error between the simulated coefficient of performanced(COP)and the experimental data of the model of the two-stage compression air source heat pump was 4.91%.After adding the PID control algorithm,the operation speed of the model was improved,and in the two-stage compressed air source heat pump model,convergence could be achieved after 5 iterations only.

关 键 词：分布参数法 比例积分微分 模型 空气源热泵 

分 类 号：TK124[动力工程及工程热物理—工程热物理]