公开(公告)号：US11555380B2

公开(公告)日：2023-01-17

申请号：US16608030

申请日：2018-04-24

Applicant: General Electric Company

Inventor： Saijun Mao ,  Yunzheng Chen ,  Yi Liao ,  Xuele Qi ,  Ming Xue ,  Stewart Blake Brazil

IPC: E21B41/00 ,  F03B13/02 ,  F03B13/10 ,  H02K7/18 ,  H02K11/00 ,  H02K11/04

Abstract: A downhole power generation includes a power generation module for providing power to a load. A turbine is driven by flow of a downhole fluid to rotate. A generator is coupled with the turbine for converting rotational energy from the turbine to electrical energy, and an AC-DC rectifier is coupled with the generator for converting an alternating voltage from the generator to a direct voltage. A power conversion circuit couples the AC-DC rectifier with the load. The power conversion circuit is configured for providing a first power to the load when the load is in a working mode and providing a second power to the load when the load is in a non-working mode. The second power is less than the first power. A downhole power generation method is also disclosed.

公开(公告)号：US11454094B2

公开(公告)日：2022-09-27

申请号：US16608009

申请日：2018-04-24

Applicant: GENERAL ELECTRIC COMPANY

Inventor： Yunzheng Chen ,  Yi Liao ,  Saijun Mao ,  Ming Xue ,  Stewart Blake Brazil ,  Xuele Qi

IPC: F03B13/02 ,  F03B15/00 ,  H02P9/04 ,  H02P101/10 ,  E21B41/00

Abstract: A downhole power generation system is disclosed, which includes a turbine generator system. The turbine generator system includes a turbine, a generator coupled with the turbine and having an AC-DC rectifier, and an optimized power control unit. The turbine is driven by flow of a downhole fluid to rotate. The generator converts rotational energy from the turbine to electrical energy and outputting a direct current voltage. The turbine generator system is coupled to a load via the optimized power control unit. The optimized power control unit controls to regulate an output voltage of the generator and provides a regulated output voltage to the load so that the turbine generator system has an optimized power output. An optimized power control method for a downhole power generation system is also disclosed.