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针对目前抽油机变频改造中存在的问题,从理论上分析了AFE技术的原理、控制特点及有关技术参数的设置方法;详细阐述了AFE技术改善变频器性能、提高抽油机效率、节约电能以及推广应用的现实意义。
Aiming at the existing problems in frequency conversion retrofit of pumping unit, the principle, control characteristic and setting method of relevant technical parameters of AFE are theoretically analyzed. The AFE technology is improved in detail to improve the performance of the inverter, improve the efficiency of pumping unit and save energy As well as the practical significance of popularization and application.