变频调速电机的运行效率及节能控制研究

分析了变频器采用U／f比控制方式的不同转矩补偿曲线时，带不同负载的电机运行效率；阐述了应用通用变频器节能中存在的一些问题；提出了一种能够根据实际负载大小和转速要求自动确定变频器输出频率及电压，以确保电机在各种条件下都以最高效率运行的节能控制算法，并仿真验证了该算法的高效性。

Research on Running Efficiencies and Energy Saving Control of an Induction Motor Fed by an Inverter

The running efficiencies of a motor driving Several different loads are analyzed when the different torque-compenstaion-curves of U/f-control-method are adopted.Some problems of energy saving with general VVVF inverter are expounded .A new control algorithm is proposed which can figure out the outputfrequency and voltage according to the requirement of torque and spedd of an actual load and can make the maximum running efficiency of motor under any conditions. The high efficiency of the control algorithm has been verified by simulation.