一種交流恒流電源的設計
張帆
（福建省產品質量檢驗研究院，福建 福州 350002）
摘 要：針對國內低壓電器試驗室普遍存在試驗電源輸出不穩定問題，設計了一種交流大電流、可調節的智能化恒流源，該恒流源以可編程邏輯控制器作為控制核心，以兩級調壓裝置作為執行機構，以液晶觸摸屏作為人機交互界面，配合變壓器、電量隔離傳感器等元器件形成一套閉環控制系統，并采用PID 控制算法對系統進行精確地控制，實現了輸出電流穩定、精確度高、可調節等功能。
關鍵詞：恒流源；可編程邏輯控制器；兩級調壓；PID 控制算法
中圖分類號：TM919 文獻標識碼：A 文章編號：1007-3175(2016)07-0019-04
Design of an Alternating Current Constant Current Power Supply
ZHANG Fan
（Fujian Inspection and Research Institute for Product Quality, Fuzhou 350002, China）
Abstract: Aiming at defects such as power output instability in low voltage electrical apparatus test room, this paper designed a kind of alternating current, large current, adjustable intelligentized constant flow source, which took the programmable logic controller as the controlling core, with the two level regulator as the executive body, with the liquid crystal display (LCD) touch screen as a man-machine interface, with the transformer, power isolation sensor, relay, transformer and other components to form a closed loop control system. The proportion integration differentiation (PID) control algorithm was used to control the system accurately, realizing stable output current, high accurate and adjustable functions.
Key words: constant current source; programmable logic controller; two level regulating; proportion integration differentiation control algorithm
參考文獻
[1] 張正．移動式程控交流穩流試驗裝置[J]．低壓電器，2012(23)：41-42.
[2] 王玨．一種基于功率放大器的恒流源設計[J]．電源技術應用，2011，14(3)：38-41．
[3] 蘇玉鑫，段寶巖．一種新型非線性PID 控制器[J]．控制與決策，2003，18(1)：126-128．
