Downhole generator system
AssigneeSchlumberger Technology Corporation
InventorsMustafa Kamil GUVEN, Torgeir RUSTEN, In Chul JANG
Life of this patent
Estimating the term…
Abstract
A downhole generator system including a controlled rectifier for receiving electrical power from a generator and outputting rectified electrical power. A control system controls the operation of the controlled rectifier and a chopper circuit connected to the output of the controlled rectifier connects a load selectively across the output of the controlled rectifier to regulate the output of the generator system. The control system controls the chopper circuit and/or the controlled rectifier based at least in part on a feed-back signal representative of an electric current output by the generator system and an electric current passing through the chopper circuit.
Claims20
A generator system comprising:
- a controlled rectifier configured to receive electrical power from a generator and to output rectified electrical power;
- a control system configured to control the operation of the controlled rectifier;
- and
- a chopper circuit connected to the output of the controlled rectifier and configured to connect a load selectively across the output of the controlled rectifier to regulate the output of the generator system, wherein the chopper circuit is controlled by the control system and the control system is configured to control the operation of the chopper circuit and/or the controlled rectifier based at least in part on a feedback signal representative of an electric current output by the generator system and an electric current passing through the chopper circuit.
A generator system and generator, wherein:
- the generator system is a generator system according to any preceding claim;
- and
- the generator is configured to supply electrical power to the generator system for conversion by the generator system into the output rectified electrical power.
Downhole equipment including a generator system, comprising:
- a controlled rectifier configured to receive electrical power from a generator and to output rectified electrical power;
- a control system configured to control the operation of the controlled rectifier;
- and
- a chopper circuit connected to the output of the controlled rectifier and configured to connect a load selectively across the output of the controlled rectifier to regulate the output of the generator system, wherein chopper circuit is controlled by the control system and the control system is configured to control the operation of the chopper circuit and/or the controlled rectifier based at least in part on a feedback signal representative of an electric current output by the generator system and an electric current passing through the chopper circuit.
A method of controlling a generator system, comprising:
- receiving a feedback signal representative of an electric current output by the generator system and an electric current passing through a chopper circuit of the generator system;
- and
- controlling the operation of a controlled rectifier and/or a chopper circuit based at least in part on the feedback signal, to provide a rectified electrical power output from the generator system.
Dependencies are inferred from the claim text.