Patents by Inventor Ole-Johan Bjerknes
Ole-Johan Bjerknes has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
-
Publication number: 20220320836Abstract: An offshore power distribution system includes first cables each having a first dry mate connection at a first end and each connecting to an offshore power generator unit at a second end, a subsea junction box at a sea floor, a second cable extending from the junction box to a subsea transformer station at the sea floor and connecting with the transformer station, and a third cable extending from the transformer station to an onshore receiver. Each first dry mate connection terminates in the junction box. The second cable has a second dry mate connection at an end thereof. The second dry mate connection terminates inside the junction box and is operatively connected to each first dry mate connection. The power distribution system is configured to transmit electric power from the power generator unit, via the first cables, the second cable, and the third cable, to the receiver.Type: ApplicationFiled: September 3, 2020Publication date: October 6, 2022Applicant: AKER SOLUTIONS ASInventors: OLE HEGGEDAL, OLE JOHAN BJERKNES, HAKON EIDSVIK, ATLE LAGSET
-
Patent number: 10077861Abstract: Subsea heating assembly, comprising a component interface cable (9) in association with a subsea component (7?) to be heated. The component interface cable receives power from an electric power source. The power source comprises an induction coupler (100) with core rings which surround an alternating current carrying source cable (5), and a winding cable (107) wound around the core ring The winding cable connects to the component interface cable. The induction coupler comprises an upper section (100a) with first core parts (101a) and a lower section (100b) with second core parts (101b). The winding cable is arranged in the upper section. The first core parts are aligned with second core parts when the upper section is landed on the lower section. The upper section is removable from the lower section.Type: GrantFiled: February 15, 2013Date of Patent: September 18, 2018Assignee: Aker Solutions ASInventors: Ole A. Heggdal, Ole Johan Bjerknes, Hjalmar Nystrøm
-
Patent number: 9964249Abstract: A subsea direct electrical heating assembly adapted to heat a hydrocarbon conducting steel pipeline (1) arranged subsea. The assembly comprises a direct electrical heating cable (3) extending along and being connected to the steel pipeline (1) and a power transmission cable (7) receiving electric power from a power supply (5) which is arranged onshore or at surface offshore, and which feeds the direct electrical heating cable (3). The subsea direct electrical heating assembly comprises a power conditioning arrangement (100) arranged at a subsea location, in a position between the power transmission cable (7) and the direct electrical heating cable (3). The power transmission cable (7) extends from the offshore or onshore power supply (5) and down to the power conditioning arrangement (100).Type: GrantFiled: February 19, 2013Date of Patent: May 8, 2018Assignee: Aker Solutions ASInventors: Ole Johan Bjerknes, Ole A. Heggdal
-
Publication number: 20180017199Abstract: A subsea direct electrical heating assembly adapted to heat a hydrocarbon conducting steel pipeline (1) arranged subsea. The assembly comprises a direct electrical heating cable (3) extending along and being connected to the steel pipeline (1) and a power transmission cable (7) receiving electric power from a power supply (5) which is arranged onshore or at surface offshore, and which feeds the direct electrical heating cable (3). The subsea direct electrical heating assembly comprises a power conditioning arrangement (100) arranged at a subsea location, in a position between the power transmission cable (7) and the direct electrical heating cable (3). The power transmission cable (7) extends from the offshore or onshore power supply (5) and down to the power conditioning arrangement (100).Type: ApplicationFiled: September 27, 2017Publication date: January 18, 2018Applicant: Aker Subsea ASInventors: Ole Johan BJERKNES, Ole A. HEGGDAL
-
Patent number: 9601925Abstract: The invention provides a subsea pressure boosting system feasible for operation at subsea step out lengths above 40 km and by control merely from a dry topside or onshore location. The system is distinctive in that it comprises: at least one subsea power step out cable, arranged from a near end at a dry location onshore or topsides to one or more subsea loads such as subsea pumps or subsea compressors at a far end, at the near end at least one source for electric power is connected and the cable is dimensioned for operation at a frequency different from the operation frequency of the connected subsea loads in order to handle the Ferranti effect and electric losses, and at least one passive electric frequency transformer, operatively connected between the subsea step out cable far end and the subsea loads, said transformer is located in a pressure vessel and transforms the operation frequency of the subsea step out cable to a frequency feasible for operation of the connected loads.Type: GrantFiled: September 13, 2011Date of Patent: March 21, 2017Assignee: Aker Subsea ASInventors: Kjell Olav Stinessen, Ole Johan Bjerknes
-
Publication number: 20150048079Abstract: Subsea heating assembly, comprising a component interface cable (9) in association with a subsea component (7?) to be heated. The component interface cable receives power from an electric power source. The power source comprises an induction coupler (100) with core rings which surround an alternating current carrying source cable (5), and a winding cable (107) wound around the core ring The winding cable connects to the component interface cable. The induction coupler comprises an upper section (100a) with first core parts (101a) and a lower section (100b) with second core parts (101b). The winding cable is arranged in the upper section. The first core parts are aligned with second core parts when the upper section is landed on the lower section. The upper section is removable from the lower section.Type: ApplicationFiled: February 15, 2013Publication date: February 19, 2015Applicant: Aker Subsea ASInventors: Ole A. Heggdal, Ole Johan Bjerknes, Hjalmar Nystrøm
-
Publication number: 20140376900Abstract: A subsea direct electrical heating assembly adapted to heat a hydrocarbon conducting steel pipeline (1) arranged subsea. The assembly comprises a direct electrical heating cable (3) extending along and being connected to the steel pipeline (1) and a power transmission cable (7) receiving electric power from a power supply (5) which is arranged onshore or at surface offshore, and which feeds the direct electrical heating cable (3). The subsea direct electrical heating assembly comprises a power conditioning arrangement (100) arranged at a subsea location, in a position between the power transmission cable (7) and the direct electrical heating cable (3). The power transmission cable (7) extends from the offshore or onshore power supply (5) and down to the power conditioning arrangement (100).Type: ApplicationFiled: February 19, 2013Publication date: December 25, 2014Applicant: Aker Subsea ASInventors: Ole Johan Bjerknes, Ole A. Heggdal
-
Patent number: 8872467Abstract: A method and system for starting and operating an electrically driven load, e.g. a compressor or pump, by power supply from a mechanical driver, e.g. a turbine or combustion engine, whereby the load is mechanically connected to a first electrical machine, and the mechanical driver is mechanically connected to a second electrical machine. The first electrical machine is electrically interconnected to the second electrical machine at a standstill or when the first and or second machine have low speed. In an acceleration phase, the first electrical machine is accelerated by accelerating the second electrical machine with the mechanical driver. When the first electrical machine has reached a predefined rotational speed, the first machine is synchronized with a local electrical power network and connected it to that network.Type: GrantFiled: August 20, 2012Date of Patent: October 28, 2014Assignee: Aker Engineering & Technology ASInventors: Ole-Johan Bjerknes, Trygve Lund
-
Patent number: 8587141Abstract: The inventions relates to a system for conditioning of power from a turbine, the turbine comprising at least one turbine blade (1) connected to a rotating hub (2), the rotating hub (2) is arranged to drive a generator (5). The generator is a multi pole synchronous generator (5) connected via a plurality of galvanic isolated three-phase cables (11) to a multi level frequency converter (25), the generator (5) also being arranged to feed current to the frequency converter (25) through the three-phase cables (11). The multi level frequency converter (25) is constituted by a plurality of elements arranged in columns and coupled in cascading order to add inverted voltage.Type: GrantFiled: November 24, 2009Date of Patent: November 19, 2013Assignee: Aker Engineering & Technology ASInventors: Ole Johan Bjerknes, Hallvard Breistein
-
Publication number: 20130169044Abstract: The invention provides a subsea pressure boosting system feasible for operation at subsea step out lengths above 40 km and by control merely from a dry topside or onshore location. The system is distinctive in that it comprises: at least one subsea power step out cable, arranged from a near end at a dry location onshore or topsides to one or more subsea loads such as subsea pumps or subsea compressors at a far end, at the near end at least one source for electric power is connected and the cable is dimensioned for operation at a frequency different from the operation frequency of the connected subsea loads in order to handle the Ferranti effect and electric losses, and at least one passive electric frequency transformer, operatively connected between the subsea step out cable far end and the subsea loads, said transformer is located in a pressure vessel and transforms the operation frequency of the subsea step out cable to a frequency feasible for operation of the connected loads.Type: ApplicationFiled: September 13, 2011Publication date: July 4, 2013Applicant: Aker Susea ASInventors: Kjell Olav Stinessen, Ole Johan Bjerknes
-
Publication number: 20120313372Abstract: A method and system for starting and operating an electrically driven load, e.g. a compressor or pump, by power supply from a mechanical driver, e.g. a turbine or combustion engine, whereby the load is mechanically connected to a first electrical machine, and the mechanical driver is mechanically connected to a second electrical machine. The first electrical machine is electrically interconnected to the second electrical machine at a standstill or when the first and or second machine have low speed. In an acceleration phase, the first electrical machine is accelerated by accelerating the second electrical machine with the mechanical driver. When the first electrical machine has reached a predefined rotational speed, the first machine is synchronized with a local electrical power network and connected it to that network.Type: ApplicationFiled: August 20, 2012Publication date: December 13, 2012Applicant: Aker Engineering & Technology ASInventors: Ole-Johan Bjerknes, Trygve Lund
-
Patent number: 8269449Abstract: A method and system for starting and operating an electrically driven load, e.g. a compressor or pump, by power supply from a mechanical driver, e.g. a turbine or combustion engine, whereby the load is mechanically connected to a first electrical machine, and the mechanical driver is mechanically connected to a second electrical machine. The first electrical machine is electrically interconnected to the second electrical machine at a standstill or when the first and or second machine have low speed. In an acceleration phase, the first electrical machine is accelerated by accelerating the second electrical machine with the mechanical driver. When the first electrical machine has reached a predefined rotational speed, the first machine is synchronized with a local electrical power network and connected it to that network.Type: GrantFiled: September 12, 2007Date of Patent: September 18, 2012Assignee: Acker Engineering & Technology ASInventors: Ole-Johan Bjerknes, Trygve Lund
-
Patent number: 8269590Abstract: A system for high power transmission on an installation comprising a first part (1, 11) and a second part (2, 12) rotating relative to each other characterized in that the system further comprising a rotary three-phase transformer having primary (U1, V1, W1) and secondary (U2, V2, W2) windings, the first part being provided with one of said primary (U1, V1, W1) or secondary (U2, V2, W2) windings, the second part being provided with the remaining winding of said primary (U1, V1, W1) or secondary (U2, V2, W2) windings, said primary (U1, V1, W1) and secondary (U2, V2, W2) windings are arranged to face each other, and an air gap (6) is provided between the primary (U1, V1, W1) and secondary (U2, V2, W2) windings and their corresponding parts of the transformer cores.Type: GrantFiled: April 14, 2009Date of Patent: September 18, 2012Assignee: Aker Engineering & Technology ASInventors: Ole Johan Bjerknes, Svein Olaf Klemetsen, Jon Liverud
-
Publication number: 20120126628Abstract: The inventions relates to a system for conditioning of power from a turbine, the turbine comprising at least one turbine blade (1) connected to a rotating hub (2), the rotating hub (2) is arranged to drive a generator (5). The generator is a multi pole synchronous generator (5) connected via a plurality of galvanic isolated three-phase cables (11) to a multi level frequency converter (25), the generator (5) also being arranged to feed current to the frequency converter (25) through the three-phase cables (11). The multi level frequency converter (25) is constituted by a plurality of elements arranged in columns and coupled in cascading order to add inverted voltage.Type: ApplicationFiled: November 24, 2009Publication date: May 24, 2012Inventor: Ole Johan Bjerknes
-
Publication number: 20110050377Abstract: A system for high power transmission on an installation comprising a first part (1, 11) and a second part (2, 12) rotating relative to each other characterized in that the system further comprising a rotary three-phase transformer having primary (U1, V1, W1) and secondary (U2, V2, W2) windings, the first part being provided with one of said primary (U1, V1, W1) or secondary (U2, V2, W2) windings, the second part being provided with the remaining winding of said primary (U1, V1, W1) or secondary (U2, V2, W2) windings, said primary (U1, V1, W1) and secondary (U2, V2, W2) windings are arranged to face each other, and an air gap (6) is provided between the primary (U1, V1, W1) and secondary (U2, V2, W2) windings and their corresponding parts of the transformer cores.Type: ApplicationFiled: April 14, 2009Publication date: March 3, 2011Inventors: Ole Johan Bjerknes, Svein Olaf Klemetsen, Jon Liverud
-
Publication number: 20100019717Abstract: A method and system for starting and operating an electrically driven load, e.g. a compressor or pump, by power supply from a mechanical driver, e.g. a turbine or combustion engine, whereby the load is mechanically connected to a first electrical machine, and the mechanical driver is mechanically connected to a second electrical machine. The first electrical machine is electrically interconnected to the second electrical machine at a standstill or when the first and or second machine have low speed. In an acceleration phase, the first electrical machine is accelerated by accelerating the second electrical machine with the mechanical driver. When the first electrical machine has reached a predefined rotational speed, the first machine is synchronized with a local electrical power network and connected it to that network.Type: ApplicationFiled: September 12, 2007Publication date: January 28, 2010Applicant: AKER ENGINEERING & TECHNOLOGY ASInventors: Ole-Johan Bjerknes, Trygve Lund