| 摘要: |
| 针对农田灌溉系统中电能消耗高且利用率低的问题, 根据管道灌溉系统的特点, 将变频调速技术引入水泵电机的节能控制。分析了包含变频器异步电机、水泵和管网的灌溉系统构成和节能基本原理, 构建各部分数学模型, 并在MATLAB/simulink平台上进行系统仿真。仿真案例结果表明:引入变频调速装置, 可实现水泵出水口流量或扬程0~1的连续变化, 节能率达56.6%;采取出水端扬程或者流量闭环控制, 可以实现变频器的输出频率调制, 进而控制水泵电机的运转。 |
| 关键词: 农田灌溉系统 变频调速 水泵电机 仿真案例 |
| DOI：10.11841/j.issn.1007-4333.2014.06.28 |
| 投稿时间：2014-01-20 |
| 基金项目:国家自然科学基金资助项目(51375482) |
|
| Simulation research on irrigation system with pump motor driven by variable frequency |
|
LIU Hong, ZHAI Qing-zhi
|
| (College of Information and Electrical Engineering, China Agricultural University, Beijing 100083, China) |
| Abstract: |
| For the high consumption and low utilization rate of power energy in the agricultural irrigation system, according to the characteristics of the pipe irrigation system, the frequency conversion speed regulation technology is introduced into the pump motor's energy-saving control.This paper analyzed the structure and the basic principles of irrigation system which included the inverter asynchronous motors, pumps and pipe network, then constructs the mathematical models of system and simulated in MATLAB/simulink.Simulation results showed that the introduction of frequency conversion devices could make the pump outlet flow or head continuously vary in the interval of 0~1 and improve the energy-saving rate to 56.5%;Closed-loop feedback control with the signals coming from water head or flow of the outlet could achieve control for output frequency of the inverter. |
| Key words: farming irrigation system frequency conversion speed regulation pump motor simulation case |
