Ｐ Ｓ Ｅ Ｃ 型抽油机节能控制器采用双向反并联可控硅进行控制的三相交流调压技术，可以通过检测电机电压与电流之间的相位差变化作为控制信号，控制晶阐管的导通角，从而改变电机的工作电压，使电机在空载或轻载时的工作电压低于额定电压，从而达到节能目的． 抽样测试结果表明： 使用该节能控制器的电机平均有功损耗降低１４ ．９２ ％ ，平均无功损耗降低３０ ．４９ ％ ，功率因数比原来提高了０ ．５ ～１ ．５ 倍． 电机负载率越低、抽油机平衡状况越好，节能效果越明显 P S E C pumping unit energy-saving controller using bi-directional anti-parallel thyristor control of the three-phase AC voltage regulating technology, you can detect the phase difference between the motor voltage and current changes as a control signal to control the crystal tube Conduction angle, thereby changing the working voltage of the motor so that the motor load or light load when the operating voltage is lower than the rated voltage, so as to achieve energy-saving purposes. The sampling test results show that the motor with the energy-saving controller reduces the average active power loss by 14%. 92%, the average reactive power loss reduced by 30. 49%, the power factor increased by 0 than the original. 5 ~ 1. 5 times. The lower the motor load rate, the better the pumping unit balance, the more obvious energy-saving effect