公开(公告)号：US10539129B2

公开(公告)日：2020-01-21

申请号：US16309934

申请日：2017-05-10

申请人： HARBIN SURFICS ELECTRICAL TECHNOLOGY INC

发明人： Ye Yang ,  Lin Wang ,  Min Zhang ,  Mingting Han ,  Yanan Sun ,  Chunlong Sun ,  Guoqing Wang ,  Hongliang Gong ,  Jie Zhang ,  Wen Xing ,  Feng Wei ,  Deshi Zhang ,  Jinyuan Li ,  Chenglin Liu ,  Feifei Wan ,  Yunlong Chen

IPC分类号： F04B47/02 ,  H02P27/04 ,  H02P1/52 ,  F04B23/02 ,  H02P21/34 ,  E21B43/12

摘要： The present invention discloses a method and a system pertaining to the field of oil production engineering. According to the method, the crank complete-cycle operation uses a utility frequency driving mode, and the crank incomplete-cycle pumping operation and the crank incomplete-cycle no-pumping, operation use a variable, frequency driving mode. The system is provided with a utility frequency loop and a variable frequency loop which are provided with a common input terminal and a common output terminal. The common input terminal of the utility frequency loop and the variable frequency loop is connected to a utility frequency power supply circuit, and the output terminal is connected to a driving electric machine of the oil pumping unit. A frequency changer is configured in the variable frequency loop. An operation control unit is further configured outside the utility frequency loop and the variable frequency loop.