离心冷水机组动态仿真与控制开发研究  

Research on dynamic modeling of water-cooled centrifugal chiller and control development

作　　者：祝用华 Zhu Yonghua(Midea Group(Shanghai)Co.,Ltd.)

机构地区：[1]美的集团(上海)有限公司

出　　处：《制冷与空调》2024年第5期30-35,共6页Refrigeration and Air-Conditioning

摘　　要：冷水机组控制系统影响机组的运行性能,利用仿真的方法对其进行设计可以加快设计效率、降低开发周期及成本。文章介绍了基于冷水机组动态仿真的智能控制器设计与仿真测试。首先在Modelica环境下基于热力学定律建立了冷水机组物理模型并进行了模型验证和测试,再将冷水机组仿真模型与控制器模型结合形成动态-控制仿真平台,在此平台上开发并测试了智能加载PID(Proportion、Integral、Differential,结合比例、积分和微分三种环节于一体)、智能整定PID等算法,结果表明,基于仿真平台的控制设计可行,智能PID控制器能很好地降低系统超调量、消除系统震荡,使机组稳定可靠运行。Control of a chiller affects its operation performance.Model based control design is helpful for improving the development efficiency,reducing developing period and cost.This paper introduces a research on dynamic modeling of the water-cooled centrifugal chiller and intelligent controller design and simulation test.The chiller dynamic model based on thermal principles was firstly developed in Modelica environment,the model is then connected with control models to form the so-called dynamic-control simulation plat-form.Based upon the platform,intelligent loading PID and intelligent tuning PID algo-rithms were developed and tested.Results showed that it is feasible to develop dynamic-control platform for control design,the intelligent PID controllers are able to reduce con-trol overshot,eliminate oscillations,thus making the chillers operate in a more stable manner。

关 键 词：冷水机组 控制 动态仿真 智能PID 

分 类 号：TB6[一般工业技术—制冷工程]