论文编号:ZD191 论文字数:12337,页数:23
摘要
本次设计主要运用变频器在空调节能上的改造，将大大改变能源的消耗，符合国家目前正在大力提倡的节能减排政策。
作为毕业论文的课题，本设计选用目前国产变频器品牌易驱变频器中的两种型号为ED3100-4T0220M和ED3100-4T0185M。
现代工厂企业、办公大楼、商厦、酒店等环境，中央空调系统是不可缺少的。中央空调系统是一个系统工程，由风机、水泵、空调机组、风机盘管等部件构成。该系统分为冷冻水系统、冷却水系统、空调主机、冷却塔风机这几个子系统。正因为中央空调系统是由这几个大的子系统构成。这必将使其在能量消耗方面大大提高。据估计，中央空调的全年能耗为建筑物全年能耗的40%~60%，而其设备所耗能量又主要用在冷源以及输送系统上，因而空调冷源和输送部分是空调自控节能设计的关键。
由于设计者的经验和知识水平有限，设计中难免出现纰漏，望老师见谅，给予批评指正。
关键词 易驱变频器 中央空调 能耗
Abstract
The design of the main use of inverter in the transformation of energy-saving air-conditioning will greatly change the energy consumption, in line with the state is currently a strong proponent of energy-saving emission reduction policies,As a thesis topic, the design of choice is currently made easy drive converter inverter brand of two models for the ED3100-4T0220M and ED3100-4T0185M,
For modern factories and enterprises, office buildings, commercial buildings, hotels, environment, central air-conditioning system is indispensable,
Central air-conditioning system is a systematic project, by the fans, pumps, air-conditioning units, fan coil units and other components. The system is divided into chilled water systems, cooling water system, air-conditioning console, cooling tower fan these subsystems,
It is precisely because of the central air-conditioning system is operated by several major subsystems that constitute. This will make it in a much higher energy consumption. It is estimated that annual energy consumption of central air-conditioning for the building annual energy consumption of 40% ~ 60%, while the energy consumption of its equipment and the main source used in the cold as well as transportation systems, and thus the source and distribution of cold air is air-conditioned Controls the key energy-saving design.
As the designers of the level of experience and knowledge is limited, the design is bound to be flawed, hope teachers will be forgiven, given criticism.
Keywords EASYDRIVE inverter air-conditioning energy consumption
目录
第一章 绪论 6
1.1选题背景和目的 6
1.2国内外研究状况及发展趋势 7
1.2.1开关损耗降低 8
1.2.2变频器主电路的拓扑结构 8
1.2.3脉宽调制变压变频器的控制方法 9
1.2.4交流电动机变频调整控制方法 9
1.2.5微处理器的进步使数字控制成为现代控制器的发展方向 9
1.2.6交流同步电动机成为交流可调传动中的一颗新星 10
第二章 中央空调改造设计 10
2.1 中央空调系统的一般结构与工作原理 10
2.2 变频调速系统 11
2.3 改造工程变频器的选取 11
2.4 中央空调使用变频器的节能原理 12
2.4.1 制冷压缩机的节能调节原理 13
2.4.2 风机水泵节能调节原理 14
2.4.3 冷冻媒水泵系统的闭环控制(检测进、出水温差) 15
2.4.4 制热模式下冷冻水泵系统的闭环控制(检测进出、水温差) 16
2.4.5 冷却循环水泵开环控制（检测进出、水温差) 16
2.4.6 盘管风机系统控制 17
2.4.7 冷却塔风机控制 17
第三章 中央空调改造方案 19
3.1改造方案 19
第四章 空调节能改造后系统特点 22
结束语 23
参考文献 23
