锻压技术

节能型直驱泵控伺服液压机及其能耗实验研究

英文标题：Research on energy-saving direct-drive pump-controlled servo hydraulic

作者：郑洪波孙友松李绍培李新中

关键词：泵控液压机伺服电机能耗

分类号：

出版年,卷(期):页码：2014,39(1):79-85

摘要：

提出一种采用直接泵控伺服液压机技术改造普通液压机的方案，即以交流永磁同步伺服电机+定量泵取代传统感应电机+定量泵作为液压机动力源，保留普通液压机的电磁换向系统、快速缸系统和充液系统，加装位移、压力传感器和比例溢流阀。建立了泵控伺服液压机的数学模型，并以一种拉深工艺为例进行了冲压能耗仿真和实验分析，节能的主要原因除了永磁同步伺服电机具有较高的效率和功率因数外，还在于减少了保压的溢流损失和待机损耗。实验表明，在相同工艺条件下该液压机比普通液压机节能20%以上，且具有较高的功率因数。

A solution was proposed to reform the traditional hydraulic press by the technology of pump-controlled servo hydraulic press. As the power unit the traditional induction motor + fixed displacement pump was replaced by permanent magnet synchronous servo motor plus fixed displacement pump; the electromagnetic reversing system, the rapid cylinder system and the filling liquid system were kept; the displacement sensors, pressure sensors and a proportional relief valve were added to the hydraulic press. The mathematical model for pump-controlled servo hydraulic press was established, and the drawing technology was taken as an example to analyze the stamping energy consumption. A conclusion is drawn that the main reasons for energy saving are that the permanent magnet synchronous servo motor has high efficiency and power factor, and the overflow loss and the standby loss are decreased. The experiment indicates that in the same conditions the hydraulic press reaches more than 20% energy saving effect compared to the traditional hydraulic press and has higher power factor.

基金项目：

粤港关键领域重点突破招标项目（20092019）

郑洪波（1970-），男，博士，高级工程师

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