The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 21, 2020
Filed:
May. 10, 2017
Harbin Surfics Electrical Technology Inc, Harbin, CN;
Ye Yang, Harbin, CN;
Lin Wang, Harbin, CN;
Min Zhang, Harbin, CN;
Mingting Han, Harbin, CN;
Yanan Sun, Harbin, CN;
Chunlong Sun, Harbin, CN;
Guoqing Wang, Harbin, CN;
Hongliang Gong, Harbin, CN;
Jie Zhang, Harbin, CN;
Wen Xing, Harbin, CN;
Feng Wei, Harbin, CN;
Deshi Zhang, Harbin, CN;
Jinyuan Li, Harbin, CN;
Chenglin Liu, Harbin, CN;
Feifei Wan, Harbin, CN;
Yunlong Chen, Harbin, CN;
HARBIN SURFICS ELECTRICAL TECHNOLOGY INC, Harbin, CN;
Abstract
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.