Patents Assigned to Scandinova Systems AB
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Publication number: 20230268752Abstract: An electrical pulse generating device is disclosed which comprises a switching unit configured such that the electrical conductivity of a current path through the switching unit is controllable by transmission of a modulated digital drive signal to the switching unit, whereby the switching unit is controllably switchable between different operational states thereof based on the digital drive signal. A shape of the electrical pulse created by the discharge of the electrical energy storage module is at least in part governed by the modulation of the digital drive signal. The modulated digital drive signal is generated based on a selected electrical pulse shape.Type: ApplicationFiled: July 14, 2021Publication date: August 24, 2023Applicant: ScandiNova Systems ABInventor: Jonas GUSTAFSSON
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Publication number: 20210366644Abstract: An arrangement (10, 20, 30) id disclosed, comprising a magnetic element (10) and at least a first winding (10) and a second winding (20), wherein each of the first winding (20) and the second winding (30) is wound in a plurality of turns (41, 42, 43, 44, 51, 52, 53, 54) around at least a portion of the magnetic element (10), and wherein at least a part or portion of the plurality of turns (51, 52, 53, 54) of the second winding (30) wound around the at least a portion of the magnetic element is arranged in spaced relation to at least a part or portion of the plurality of turns (41, 42, 43, 44) of the first winding (20) wound around the at least a portion of the magnetic element (10), thereby defining at least one gap (61, 62) between the at least a part or portion of the plurality of turns (51, 52, 53, 54) of the second winding (30) and the at least a part or portion of the plurality of turns (41, 42, 43) of the first winding (20).Type: ApplicationFiled: October 3, 2018Publication date: November 25, 2021Applicant: ScandiNova Systems ABInventors: Emil VIDLIN, Per NILSSON
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Publication number: 20210313818Abstract: An output rectifier (10) is disclosed which is electrically connected or connectable in a current path between a power supply (20) and an electrical energy storage module (30). The power supply (20) is configured to supply power to the electrical energy storage module (30) via the output rectifier (10). The output rectifier (10) comprises at least one diode (11, 12, 13, 14) at least in part based on silicon carbide. An arrangement (100) comprising the output rectifier (10) is also disclosed.Type: ApplicationFiled: May 20, 2019Publication date: October 7, 2021Applicant: ScandiNova Systems ABInventors: Per Nilsson, Magnus GRAAS
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Patent number: 10819320Abstract: An arrangement (100) is disclosed, comprising an electrical pulse generating module (10) configured to generate at least one electrical pulse, and a transformer (20) electrically connected to the electrical pulse generating module (10). The electrical pulse generating module (10) comprises an electrical energy storage module (40) that can be charged or discharged, and a switch unit (50) controllably switchable between at least a conducting state and a non-conducting state. When the switch unit (50) is switched into the non-conducting state, a power supply (30) charges the electrical energy storage module (40) by way of a charging current. When the switch unit (50) is switched into the conducting state, the electrical energy storage module (40) is discharged to create an electrical pulse to be received by the transformer (20).Type: GrantFiled: December 19, 2017Date of Patent: October 27, 2020Assignee: ScandiNova Systems ABInventor: Klas Elmquist
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Publication number: 20190348973Abstract: An arrangement (100) is disclosed, comprising an electrical pulse generating module (10) configured to generate at least one electrical pulse, and a transformer (20) electrically connected to the electrical pulse generating module (10). The electrical pulse generating module (10) comprises an electrical energy storage module (40) that can be charged or discharged, and a switch unit (50) controllably switchable between at least a conducting state and a non-conducting state. When the switch unit (50) is switched into the non-conducting state, a power supply (30) charges the electrical energy storage module (40) by way of a charging current. When the switch unit (50) is switched into the conducting state, the electrical energy storage module (40) is discharged to create an electrical pulse to be received by the transformer (20).Type: ApplicationFiled: December 19, 2017Publication date: November 14, 2019Applicant: ScandiNova Systems ABInventor: Klas Elmquist
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Patent number: 9083256Abstract: A capacitor charger system has a resonant power converter to connect to a capacitor via a rectifier. The resonant power converter has a switch-based bridge network, an internal transformer, a resonant circuit, and an amplitude stabilization circuit. The switch-based bridge network comprises at least one pair of switches. The resonant circuit includes a series-resonant branch with capacitive and inductive components, and the resonant circuit is connected in the circuit path to a midpoint between a pair of switches of the switch-based bridge network. The amplitude stabilization circuit provides stabilization of the resonant amplitude of the resonant circuit, and the amplitude stabilization circuit includes one-way conducting circuitry connected between an unrestricted node defined by a junction and a connection point of the resonant power converter having a predefined voltage level at operation. The resonant power converter connects to the output rectifier via the secondary winding of the internal transformer.Type: GrantFiled: December 21, 2012Date of Patent: July 14, 2015Assignee: SCANDINOVA SYSTEMS ABInventors: Walter Frederick John Crewson, Klas Elmqvist
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Patent number: 8797001Abstract: The invention relates to a capacitor charger system (100) comprising a capacitor charger module (110), an isolated acquisition module (120), and a digital control module (130). The isolated acquisition module (120) is configured for sampling an output voltage level of said capacitor charger module (110). The digital control module (130) is connected to the isolated acquisition module (120) via a bi-directional link and connected to the capacitor charger module (110) via a control signal interface. The digital control module (130) is configured for generating control signal information and synchronization signal information based on data representative of sampled output voltage levels received via the bi-directional link from the isolated acquisition module.Type: GrantFiled: June 30, 2009Date of Patent: August 5, 2014Assignee: Scandinova Systems ABInventors: Klas Elmqvist, Carl Hartman, Magnus Graas, Andreas Wickström, Jonas Gustafsson, Jan Lundgren, Walter Frederick John Crewson
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Publication number: 20140176086Abstract: A capacitor charger system has a resonant power converter to connect to a capacitor via a rectifier. The resonant power converter has a switch-based bridge network, an internal transformer, a resonant circuit, and an amplitude stabilization circuit. The switch-based bridge network comprises at least one pair of switches. The resonant circuit includes a series-resonant branch with capacitive and inductive components, and the resonant circuit is connected in the circuit path to a midpoint between a pair of switches of the switch-based bridge network. The amplitude stabilization circuit provides stabilization of the resonant amplitude of the resonant circuit, and the amplitude stabilization circuit includes one-way conducting circuitry connected between an unrestricted node defined by a junction and a connection point of the resonant power converter having a predefined voltage level at operation. The resonant power converter connects to the output rectifier via the secondary winding of the internal transformer.Type: ApplicationFiled: December 21, 2012Publication date: June 26, 2014Applicant: ScandiNova Systems ABInventor: ScandiNova Systems AB
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Patent number: 8279571Abstract: A transmission delay line is introduced between the switch and the power output side of a power switching system so that sparking of the load is hidden from the switch by the time delay of the transmission line. This makes it possible to detect the load spark and actively protect the switch, typically by turning the switch off, before it actually knows that there has been a load fault spark. Alternatively, the delay of the transmission line is long enough so that the switch has already been turned off in normal pulse operation before the load fault current reaches the switch. Either way, the switch will be turned off under normal current flow and will not be subject to destructive over-current or over-voltage conditions.Type: GrantFiled: September 21, 2010Date of Patent: October 2, 2012Assignee: Scandinova Systems ABInventors: Walter Crewson, Mark H. Kaltenborn
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Patent number: 8232747Abstract: A particle accelerator (100) comprises a power supply arrangement (110), a plurality of solid-state switched drive sections (120), a plurality of magnetic core sections (130) and a switch control module (140). The drive sections (120) are connected to the power supply arrangement (110) for receiving electrical power therefrom, and each drive section comprises a solid-state switch, electronically controllable at turn-on and turn-off, for selectively providing a drive pulse at an output of the drive section. The magnetic core sections (130) are symmetrically arranged along a central beam axis, and each magnetic core of the sections is coupled to a respective drive section (120) through an electrical winding connected to the output of the drive section.Type: GrantFiled: June 24, 2009Date of Patent: July 31, 2012Assignee: ScandiNova Systems ABInventors: Walter Frederick John Crewson, Mark H. Kaltenborn
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Publication number: 20120086410Abstract: The invention relates to a capacitor charger system (100) comprising a capacitor charger module (110), an isolated acquisition module (120), and a digital control module (130). The isolated acquisition module (120) is configured for sampling an output voltage level of said capacitor charger module (110). The digital control module (130) is connected to the isolated acquisition module (120) via a bi-directional link and connected to the capacitor charger module (110) via a control signal interface. The digital control module (130) is configured for generating control signal information and synchronization signal information based on data representative of sampled output voltage levels received via the bi-directional link from the isolated acquisition module.Type: ApplicationFiled: June 30, 2009Publication date: April 12, 2012Applicant: Scandinova Systems ABInventors: Klas Elmqvist, Carl Hartman, Magnus Graas, Andreas Wickström, Jonas Gustafsson, Jan Lundgren, Walter Frederick John Crewson
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Patent number: 7990246Abstract: A pulse transformer arrangement (100) is built from an uncut pulse transformer core (110) and at least one foil winding (120-A, 120-B) (each) comprising multiple insulated conducting strips arranged around the core and ending in foil winding terminals to form multiple independent primary windings. This new design principle has several advantages. Making the winding(s) of foil eliminates the need to cut the core, because of the ease of insertion of the foil winding(s) onto the core. The work to set up a plurality of primary windings is significantly reduced. In addition to the elimination of the costs for cutting the core, this also brings the further advantages of reduced DC reset current, reduced risk for electrical shorts and avoidance of excessive losses due to potential high frequency AC resistance problems.Type: GrantFiled: September 18, 2006Date of Patent: August 2, 2011Assignee: Scandinova Systems ABInventors: Mikael Rolf Lindholm, Bengt Anderberg
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Publication number: 20110075310Abstract: A transmission delay line is introduced between the switch and the power output side of a power switching system so that sparking of the load is hidden from the switch by the time delay of the transmission line. This makes it possible to detect the load spark and actively protect the switch, typically by turning the switch off, before it actually knows that there has been a load fault spark. Alternatively, the delay of the transmission line is long enough so that the switch has already been turned off in normal pulse operation before the load fault current reaches the switch. Either way, the switch will be turned off under normal current flow and will not be subject to destructive over-current or over-voltage conditions.Type: ApplicationFiled: September 21, 2010Publication date: March 31, 2011Applicant: SCANDINOVA SYSTEMS ABInventors: Walter Crewson, Mark H. Kaltenborn
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Patent number: 7903434Abstract: A power modulator comprises a plurality of switched pulse generator sections (22), a power supply arrangement (10), and a transformer arrangement (30). A switch control (24) is connected to said plurality of switched pulse generator sections (22) for providing control signals for turning on and/or turning off them. The switch control (24) is arranged to provide control signals for turning on and/or turning off switched pulse generator sections of a first subset at a first time instant and to provide control signals for turning on and/or turning off switched pulse generator sections of a second subset at a second time instant, different from the first time instant: The second subset is different from the first subset.Type: GrantFiled: June 23, 2008Date of Patent: March 8, 2011Assignee: Scandinova Systems ABInventors: Walter Frederick John Crewson, Mikael Rolf Lindholm
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Patent number: 7885049Abstract: A transmission delay line is introduced between the switch and the power output side of a power switching system so that sparking of the load is hidden from the switch by the time delay of the transmission line. This makes it possible to detect the load spark and actively protect the switch, typically by turning the switch off, before it actually knows that there has been a load fault spark. Alternatively, the delay of the transmission line is long enough so that the switch has already been turned off in normal pulse operation before the load fault current reaches the switch. Either way, the switch will be turned off under normal current flow and will not be subject to destructive over-current or over-voltage conditions.Type: GrantFiled: June 29, 2005Date of Patent: February 8, 2011Assignee: Scandinova Systems ABInventors: Walter Crewson, Mark H. Kaltenborn
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Publication number: 20100327785Abstract: A particle accelerator includes a power supply arrangement, multiple solid-state switched drive sections, a plurality of magnetic core sections and a switch control module. The drive sections are connected to the power supply arrangement for receiving electrical power therefrom, and each drive section includes a solid-state switch, electronically controllable at turn-on and turn-off, for selectively providing a drive pulse at an output of the drive section. The magnetic core sections are symmetrically arranged along a central beam axis, and each magnetic core of the sections is coupled to a respective drive section through an electrical winding connected to the output of the drive section. The switch control module is connected to the drive sections for providing control signals to control turn-on and turn-off of the solid state switches to selectively drive magnetic cores to induce an electric field for accelerating the beam of charged particles along the beam axis.Type: ApplicationFiled: June 24, 2009Publication date: December 30, 2010Applicant: ScandiNova Systems ABInventors: Walter Frederick John CREWSON, Mark H. KALTENBORN
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Publication number: 20090316438Abstract: A power modulator comprises a plurality of switched pulse generator sections (22), a power supply arrangement (10), and a transformer arrangement (30). A switch control (24) is connected to said plurality of switched pulse generator sections (22) for providing control signals for turning on and/or turning off them. The switch control (24) is arranged to provide control signals for turning on and/or turning off switched pulse generator sections of a first subset at a first time instant and to provide control signals for turning on and/or turning off switched pulse generator sections of a second subset at a second time instant, different from the first time instant: The second subset is different from the first subset.Type: ApplicationFiled: June 23, 2008Publication date: December 24, 2009Applicant: SCANDINOVA SYSTEMS ABInventors: Walter Frederick John Crewson, Mikael Rolf Lindholm