GB2479535A - Current limiter for a vehicle power distribution network - Google Patents

Current limiter for a vehicle power distribution network Download PDF

Info

Publication number
GB2479535A
GB2479535A GB1006055A GB201006055A GB2479535A GB 2479535 A GB2479535 A GB 2479535A GB 1006055 A GB1006055 A GB 1006055A GB 201006055 A GB201006055 A GB 201006055A GB 2479535 A GB2479535 A GB 2479535A
Authority
GB
United Kingdom
Prior art keywords
solid state
distribution network
power distribution
current limiter
electric current
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
GB1006055A
Other versions
GB201006055D0 (en
Inventor
Benjamin Palethorpe
David Reginald Trainer
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Rolls Royce PLC
Original Assignee
Rolls Royce PLC
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Rolls Royce PLC filed Critical Rolls Royce PLC
Priority to GB1006055A priority Critical patent/GB2479535A/en
Publication of GB201006055D0 publication Critical patent/GB201006055D0/en
Publication of GB2479535A publication Critical patent/GB2479535A/en
Withdrawn legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
    • H02H3/02—Details
    • H02H3/025—Disconnection after limiting, e.g. when limiting is not sufficient or for facilitating disconnection
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H9/00—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection
    • H02H9/001—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection limiting speed of change of electric quantities, e.g. soft switching on or off
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H9/00—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection
    • H02H9/02—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection responsive to excess current
    • H02H9/025—Current limitation using field effect transistors

Landscapes

  • Emergency Protection Circuit Devices (AREA)

Abstract

An electrical power distribution network for an aircraft or watercraft 1, 20 comprises an electric storage element 6, 26, 36, a solid state current limiter 2, 22 configured to limit an electric current between a load and a generation element and/or the electric storage element, the electric current passing through the solid state current limiter 2, 22, and a solid state switch 3, 23 configured to interrupt the electric current that passes through the solid state current limiter 2,22. The switch is an active device. It may be coupled within a rectifier bridge to allow bi-directional control.

Description

AN ELECTRICAL POWER DISTRIBUTION NETWORK
Some embodiments of the present invention relate to an electrical power distribution network. Some embodiments of the present invention relate to a power controller device for protecting an electrical power distribution network.
Under fault conditions a very high transient fault current may develop in a power distribution network typically in the order of tens or even hundreds of thousands of amps. Such a large current can lead to complete collapse of the distribution network.
In low power distribution networks it may be possible to utilise solid state devices to protect an electrical power distribution network but the rating of such solid state devices is limited to a few tens of amps making them unsuitable for high power applications ( e.g. several hundred kW).
At high power, protection is typically achieved by using relatively large and heavy electromechanical contacts and circuit breaker hardware.
Fuses may also be used to protect a power distribution network. However, fuses are not ideal for all applications because they cannot be easily reset and once operated the branch containing the fuse cannot be reconnected until an appropriate repair procedure or maintenance cycle.
In accordance with some embodiments of the present invention there is provided an electrical power distribution network comprising: an electric storage element; a solid state current limiter configured to limit an electric current between a load and a generation element and/or the electric storage element, the electric current passing through the solid state current limiter; and a solid state switch configured to interrupt the electric current that passes through the solid state current limiter.
In accordance with some embodiments of the present invention there is provided a power controller device, for an electrical power distribution network, comprising: a solid state current limiter configured to limit an electric current between an electrical energy sink and an electrical energy source, that passes through the solid state current limiter; and a solid state switch configured to interrupt the electric current that passes through the solid state current limiter.
The use of solid state devices reduces size and weight and makes the electrical power distribution network particularly suitable for mobile applications such as vehicular applications. A vehicular power distribution network may, for example, be an aircraft power distribution network suitable for an aeroplane for example, or a watercraft power distribution network suitable for a ship or submarine for example, or a land vehicle power distribution network suitable for a car or truck for example.
In some embodiments, the solid state current limiter and the solid state switch may be provided by an integrated circuit.
In accordance with some embodiments of the present invention there is provided a vehicular electrical power distribution network comprising: an electric storage element; a solid state current limiter configured to limit an electric current between a load and one or more of a generation element and the electric storage element, the electric current passing through the solid state current limiter; and a solid state switch configured to interrupt the electric current that passes through the solid state current limiter.
In accordance with some embodiments of the present invention there is provided a vehicular power controller device, for a high power vehicular electrical power distribution network, comprising: a solid state current limiter configured to limit an electric current between a electrical energy sink and an electrical energy source, that passes through the solid state current limiter; and a solid state switch configured to interrupt the electric current that passes through the solid state current limiter.
Embodiments of aspects of the present invention will now be described by way of example only with reference to the accompanying drawings in which: Figure 1 schematically illustrates an example of an electrical power distribution network; Figure 2 schematically illustrates an example of a bi-directional electrical power distribution network; Figure 3 schematically illustrates an example of a bi-directional current limiter; Figure 4 schematically illustrates an example of a bi-directional current switch; Figure 5 schematically illustrates an example of a power controller device; Figure 6 schematically illustrates an example of control circuitry for controlling a solid state switch; and Figure 7 schematically illustrates one example of a control signal for controlling a solid state switch.
The Figures illustrate an electrical power distribution network (1, 20) comprising: an electric storage element (6, 26, 36); a solid state current limiter (2, 22) configured to limit an electric current between a load and a generation element and/or the electric storage element, the electric current passing through the solid state current limiter (2, 22); and a solid state switch (3, 23) configured to interrupt the electric current that passes through the solid state current limiter (2,22).
The electrical power distribution network comprises a power controller device (100, 200), for a high power electrical power distribution network (1, 20), that comprises, in combination, the solid state current limiter (2, 22) and the solid state switch (3, 23) configured to interrupt the electric current that passes through the solid state current limiter (2, 22).
Aspects of the present invention attempt to provide protection for an electrical power distribution network by controlling an abnormally high power electric current. Such over current may occur during initial switch on (inrush current) and during external faults (outrush current). In a direct current power distribution network, the high power current may arise from the discharge of a lumped or distributed capacitance.
Figure 1 schematically illustrates an electrical power distribution network 1 comprising: an electric storage element 6; a solid state current limiter 2 configured to limit an electric current between a load 8 and a generation element and/or the electric storage element 6, the electric current passing through the solid state current limiter 2; and a solid state switch 3 configured to interrupt the electric current that passes through the solid state current limiter 2.
The power source in the electrical power distribution network 1, in the illustrated example, is a direct current source and includes an electrical power supply 5 and a storage device 6, such as a capacitor 6. The network 1 has electrical resistance and inductance as illustrated by R, L. A power controller device 100 comprises, as a series combination, the solid state current limiter 2 and the solid state switch 3. The solid state current limiter 2 is a passive device and the solid state switch is an actively controlled device. In this illustrated example, it also comprises a voltage suppression device 4. The voltage suppression device 4 provides a conditional electric current path to ground that is parallel to an electric current path through the solid state current limiter 2, the solid state switch 3 and the electrical load 8. The electric current path to ground is conditional because it is only created when the voltage at an input to the solid state current limiter 2 exceeds a threshold. This may occur when fast changes in the electric current develop a large voltage over the network's inductance L. The voltage suppression device 4 may be achieved through any appropriate mechanism but typically will utilise semiconductor techniques based upon for example zinc oxide semiconductor material elements or electrical capacitance elements. The illustrated voltage suppression device 4 is a reverse biased Zener diode.
The electrical load 8 may be subject to a potential fault. The solid state switch 3 in this illustrated example is located in an electric current path between the solid state current limiter 2 and the electrical load 8. The purpose of the solid state switch 3 is to interrupt an electric current along the electric current path that could damage the solid state current limiter 2. Such a potentially damaging electric current may, for example, arise if the load 8 develops a fault.
The solid state switch 3 is controlled by a control signal 7.
The control signal 7 may be provided by a controller 60 as illustrated schematically in Figure 6 or it may be provided as a voltage developed across the solid state current limiter 2. The controller 60 may be located within the power controller device 100 or may be separate to the power controller device 100.
Referring to Figure 6, a detector 82 is configured to detect a release of stored energy at a rate exceeding a threshold electric current value. The detector 82 is configured to enable the controller 80 when such a detection is made. In response, the controller 80 changes from a normal' state of operation to a fault' state of operation.
In the normal state, the controller 80 maintains, without interruption, the electric current through the solid state current limiter 2. It may, for example, provide a constant voltage that is bounded by Vi as the control signal 7.
In the fault state, the controller 80 controls the solid state switch 3 to interrupt the electric current through the solid state current limiter 2. The controller 80, in the fault state, may for example, provide a control signal 7 that has a voltage that, for example, changes from Vi to V2. The voltage V2 controls the solid state switch 3 to interrupt the electric current through the solid state current limiter 2. Subsequently, when the controller 60 determines it is safe to do so, the controller 60 re-enters the normal state. It may, for example, provide a control signal 7 that has a voltage that, for example, changes from V2 to Vi.
The variation of the control signal 7 intermittently toggles the solid state switch 3.
The detectors 82 may be positioned appropriately around the network 1.
The detector or detectors 82 may provide signals with regard to electric current flow, to voltage, to temperature and other desired operational values.
Figure 7 schematically illustrates one example of the control signal 7 during the normal' state and the fault state'. In this example, during the fault state the control signal 7 switches the solid state switch 3 off.
The solid state switch 3 may comprise a solid state transistor such as a field effect transistor. In the illustrated example, the control signal 7 is applied to a gate electrode of a field effect transistor. A channel of the FET provides an electric current path between the solid state current limiter 2 and the load 8. A solid state switch 3 is utilised due to its small weight and volume The electrical power distribution network i depicted in Figure i typically relates to a uni-directional direct electric current flow, where the direction of current flow has a known and consistent sense. However, in complex electrical power distribution networks there may be multiple loads and multiple electrical sources and in such circumstances electric current could intentionally flow in opposite senses at different points in time. Likewise under fault conditions a large, rapidly increasing electric current could flow in either sense. Figure 2 schematically illustrates an electrical power distribution network 20 that enables bi-directional direct current flow.
Figure 2 schematically illustrates an electrical power distribution network 20.
This network 20 is a bi-directional power distribution network. It comprises a first network 3i that is connected to a second network 41 via a power controller device 200.
In the illustrated example, the first network 31 comprises a first load 39, a first electrical power supply 35 and a first storage device 36, such as a capacitor, connected in a first parallel arrangement. The first network 31 has electrical resistance and inductance as illustrated by Ri, Li connected in series with the first parallel arrangement.
In the illustrated example, the second network 41 comprises a second load 49, a second electrical power supply 45 and a storage device 46, such as a capacitor, connected in a second parallel arrangement. The second network 41 has electrical resistance and inductance as illustrated by R2, L2 connected in series with the second parallel arrangement.
The power controller device 200 comprises, as a series combination, a solid state current limiter 22 and a solid state switch 23. In this illustrated example, a rectifier stage 38 is used to ensure that the electric current path through the series combination of the solid state current limiter 22 and the solid state switch 23 has the same sense whether the electric current path is flowing in a first sense from the first network 31 to the second network 41 or in a second, opposite sense from the second network 41 to the first network.
The electric current path from the first network 31 to the second network 41 is via a first diode 39 (as a parallel second diode 392 is reverse biased), through the series combination of the solid state current limiter 22 and the solid state switch 23, and through a fourth diode 39g.
The electric current path from the second network 41 to the first network 31 is via a third diode 39 (as the parallel fourth diode 39 is reverse biased), through the series combination of the solid state current limiter 22 and the solid state switch 23, and through the second diode 392.
The solid state current limiter 22 is configured to limit an electric current between a load and a generation element and/or the electric storage element passing through the solid state current limiter 22. The solid state switch 23 is configured to interrupt the electric current that passes through the solid state current limiter 22.
The power controller device 200 additionally comprises a first voltage suppression device 24 connected to a first node connected to the first network 31 and positioned between the first diode 39 and the second diode 392. The first voltage suppression device 24 provides a conditional electric current path to ground that is parallel to an electric current path through the solid state current limiter 22, the solid state switch 23 and the electrical load 49. The electric current path to ground is conditional because it is only created when the voltage at the first node exceeds a threshold. This may occur when fast changes in the electric current develop a large voltage over the first network's inductance Li. The voltage suppression device 4 may be achieved through any appropriate mechanism but typically will utilise semiconductor techniques based upon for example zinc oxide semiconductor material elements or electrical capacitance elements. The illustrated voltage suppression device 4 is a reverse biased Zener diode.
The power controller device 200 additionally comprises a second voltage suppression device 242 connected to a second node connected to the second network 4i and positioned between the third diode 393 and the fourth diode 394.
The second voltage suppression device 242 provides a conditional electric current path to ground that is parallel to an electric current path through the solid state current limiter 22, the solid state switch 23 and the electrical load 39. The electric current path to ground is conditional because it is only created when the voltage at the second node exceeds a threshold. This may occur when fast changes in the electric current develop a large voltage over the second network's inductance L2. The voltage suppression device 4 may be achieved through any appropriate mechanism but typically will utilise semiconductor techniques based upon for example zinc oxide semiconductor material elements or electrical capacitance elements. The illustrated voltage suppression device 4 is a reverse biased Zener diode.
Either electrical load 39 or electrical load 49 may develop a fault. The solid state switch 23 in this illustrated example is located in the electric current path between the solid state current limiter 22 and the electrical load. The purpose of the solid state switch 23 is to interrupt an electric current along the electric current path that could damage the solid state current limiter 22. Such a potentially damaging electric current may, for example, arise if one of the loads develops a fault.
The solid state switch 3 may be controlled by a control signal 7 in a manner as previously described with reference to Figure i.
The control signal 7 may be provided by a controller 60 as described with reference to Figure 6. The controller 60 may be located within the power controller device 200 or may be separate to the power controller device 200.
The solid state current limiter 2, 22 and the solid state switch 3, 23 are generally formed from solid state materials and therefore have a small size and weight that makes the power controller device 100, 200 suitable for mobile applications such as vehicular applications.
It will be understood alternative configurations to those depicted in figure 1 and figure 2 may be provided particularly with regard to bi-directional current flow.
Figure 3 schematically illustrates a bi-directional current limiter 53 in which two solid state current limiters 51, 52 are arranged in series, but one is inverted relative to the other, to enable bi-directional current limiting.
Figure 4 schematically illustrates a bi-directional current switch 61 in which a series combination of a first solid state switch 62 and a first diode 64 is arranged in parallel to a series combination of a second solid state switch 63 and a second diode 65. The senses of the diodes are opposite and provide directionality. The series combination of the first solid state switch 62 and the first diode 64 enable a current path from left to right in the Figure. The first solid state switch 62 is operated by a control signal 66. The series combination of the second solid state switch 63 and the second diode 64 enable a current path from right to left in the Figure. The second solid state switch 63 is operated by a control signal 67.
Figure 5 schematically illustrates a power controller device 70 that combines the bi-directional current limiter depicted in figure 3 with the bi-directional solid state switch 61 depicted in figure 4. The power controller device comprises a series combination of a first solid state switch 62, a first diode 64 and a first solid state current limiter 51. That series combination is arranged in parallel to a series combination of a second solid state switch 63, a second diode 65, and a second solid state current limiter 52. The senses of the diodes are opposite and provide directionality. The series combination of the first solid state switch 62, the first diode 64 and the first solid state current limiter 51 enable a current path from left to right in the Figure. The first solid state switch 62 may be operated by a control signal 66 such as that described with reference to Figure 1. The series combination of the second solid state switch 63, the second diode 64 and the second solid state current limiter 52 enable a current path from right to left in the Figure. The second solid state switch 63 is operated by a control signal 67 such as that described with reference to Figure 1.
Alternative power controller devices 70, for bi-directional current control, may comprise: a) a bi-directional current limiter (53, Figure 3) with a bi-directional solid state switch (61, Figure 4) connected in series directly; b) a bi-directional current limiter (53, Figure 3) connected in series with a uni-directional solid state switch surrounded by a four diode bridge rectifier stage 38; c) a bi-directional solid state switch (61, Figure 4) connected in series with a uni-directional current limiter surrounded by a four diode bridge rectifier stage 38.
Option b) is similar to the power controller 200 illustrated in Figure 2. The solid state switch 23 remains within the rectifier stage 38, however, the current limiter 22 is removed from the rectifier stage 38. A bi-directional current limiter (53, Figure 3) is connected in series with the rectifier stage 38.
Option c) is similar to the power controller 200 illustrated in Figure 2. The current limiter 22 remains within the rectifier stage 38, however, the solid state switch 23 is removed from the rectifier stage 38. A bi-directional solid state switch (61, Figure 4) is connected in series with the rectifier stage 38.
By aspects of the present invention a substantially solid state power controller is provided which is able to effectively limit current levels during fault conditions by interrupting the fault current. In such circumstances a requirement for mechanical circuit breakers which are generally large and heavy is avoided.
Aspects of the present invention as indicated can be utilised in a wide range of installations where electrical systems including AC and DC networks are utilised. As the solid state power controller in accordance with aspects of the present invention will have a reduced size and weight in comparison with prior arrangements as well as a relatively quick operating time it will be understood that the arrangement may be applied extensively including in areas of aerospace, marine and energy supply.
By provision of a solid state switch in accordance with aspects of the present invention it is possible to utilise with more confidence a smaller and therefore potentially faster and lighter switch than normally would be specified for a direct electric current network.
Modifications and alterations to aspects of the present invention will be appreciated by a person skilled in the technology. In such circumstances as indicated above generally solid state current limiters are combined with solid state switches in order to provide current limitation and power flow control through a fault load. As indicated above both uni-directional and bi-directional current flow can be accommodated. Voltage suppression may be used in order to prevent high voltage peaks as a result of the current control and switching achieved by aspects of the present invention. The level of voltage suppression will be determined by operational requirements but should dampen voltage spikes rapidly. The potential fault loads may be line to line or line to ground or simply excessive current levels as determined by a detector.

Claims (15)

  1. Claims 1. A vehicular electrical power distribution network (1, 20) comprising: an electric storage element (6, 26, 36); a solid state current limiter (2, 22) configured to limit an electric current between a load and a generation element and/or the electric storage element, the electric current passing through the solid state current limiter (2, 22); and a solid state switch (3, 23) configured to interrupt the electric current that passes through the solid state current limiter (2,22).
  2. 2. A vehicular electrical power distribution network (1, 20) as claimed in claim 1, wherein the solid state current limiter (2, 22) is a passive device and the solid state switch (3, 23) is an actively controlled device.
  3. 3. A vehicular electrical power distribution network (1, 20) as claimed in claim 1 or 2 further comprising: a controller (80) configured to control the solid state switch (3, 23) to interrupt the electric current passing through the solid state current limiter (2, 22).
  4. 4. A vehicular electrical power distribution network (1, 20) as claimed in claim 1 or 2 further comprising: a controller (80) configured to control the solid state switch (3, 23) to intermittently interrupt the electric current passing through the solid state current limiter (2, 22).
  5. 5. A vehicular electrical power distribution network (1, 20) as claimed in any preceding claim, further comprising a detector (82) configured to detect a release of stored energy from the electrical storage element at a rate exceeding a threshold value, and configured to enable the controller (82).
  6. 6. A vehicular electrical power distribution network (20) as claimed in any preceding claim, wherein the solid state switch (23) is coupled within a rectifier stage (38) configured to enable bi-directional direct current flow in the electrical power distribution network (20) but uni-directional direct current flow through the solid state switch (23).
  7. 7. A vehicular electrical power distribution network (20) as claimed in claim 6 wherein the rectifier stage (38) comprises a four diode (39) bridge.
  8. 8. A vehicular electrical power distribution network (1, 20) as claimed in any preceding claim, further comprising a voltage suppression device (4, 24).
  9. 9. A vehicular electrical power distribution network (1, 20) as claimed in any preceding claim, wherein the solid state current limiter (2, 22) is formed from a material selected from the group comprising: silicon carbide, gallium nitride, diamond
  10. 10. A vehicular power controller device (100, 200), for a high power vehicular electrical power distribution network (1, 20), comprising: a solid state current limiter (2, 22) configured to limit an electric current between a electrical energy sink and an electrical energy source, that passes through the solid state current limiter (2, 22); and a solid state switch (3, 23) configured to interrupt the electric current that passes through the solid state current limiter (2, 22).
  11. 11. A vehicular power controller device (100, 200) as claimed in claim 10, further comprising: a controller (60) configured, during a fault state, to control the solid state switch (3, 23) to interrupt the electric current through the solid state current limiter (2, 22) and configured, during a normal state, to control the solid state switch (3, 23) to maintain the electric current through the solid state current limiter (2, 22).
  12. 12. A vehicular power controller device (100, 200) as claimed in any one of claims 10 or 11, further comprising a detector (82) configured to detect a release of stored energy at a rate exceeding a threshold electric current value, and configured to enable the controller (80).
  13. 13. A vehicular power controller device (200) as claimed in any one of claims 10 to 12, wherein the solid state switch ( 23) is coupled within a rectifier stage (38) configured to enable bi-directional direct current flow in the electrical power distribution network (20) but uni-directional direct current flow through the solid state switch (23).
  14. 14. A vehicular power controller device (100, 200) as claimed in any one of claims 10 to 13, further comprising a voltage suppression device (4, 24).
  15. 15. An aircraft incorporating a vehicular power controller device as claimed in any one of claims lOto 14.
GB1006055A 2010-04-13 2010-04-13 Current limiter for a vehicle power distribution network Withdrawn GB2479535A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1006055A GB2479535A (en) 2010-04-13 2010-04-13 Current limiter for a vehicle power distribution network

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1006055A GB2479535A (en) 2010-04-13 2010-04-13 Current limiter for a vehicle power distribution network

Publications (2)

Publication Number Publication Date
GB201006055D0 GB201006055D0 (en) 2010-05-26
GB2479535A true GB2479535A (en) 2011-10-19

Family

ID=42236164

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1006055A Withdrawn GB2479535A (en) 2010-04-13 2010-04-13 Current limiter for a vehicle power distribution network

Country Status (1)

Country Link
GB (1) GB2479535A (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR3006515A1 (en) * 2013-05-31 2014-12-05 Airbus Operations Sas ELECTRICAL PROTECTION USING A SEMICONDUCTOR SWITCH.
FR3058277A1 (en) * 2016-10-28 2018-05-04 Airbus Operations (S.A.S.) SYSTEM AND METHOD FOR MANAGING SHORT CIRCUITS IN A MAINS NETWORK FOR DISTRIBUTING ELECTRICAL ENERGY OF AN AIRCRAFT
US20220281608A1 (en) * 2021-03-03 2022-09-08 Rolls-Royce Plc Electrical power systems
DE102012210600B4 (en) 2012-06-22 2023-03-02 Robert Bosch Gmbh Charging and/or disconnecting device for a battery system
US11634234B2 (en) 2021-03-03 2023-04-25 Rolls-Royce Plc Electrical power systems
US11643940B2 (en) 2021-03-03 2023-05-09 Rolls-Royce Plc Electrical power systems

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4955069A (en) * 1989-03-02 1990-09-04 Ionescu Adrian F A.C. power controller with short circuit and overload protection
US5023692A (en) * 1989-12-07 1991-06-11 Harris Semiconductor Patents, Inc. Power MOSFET transistor circuit
US5999387A (en) * 1993-09-08 1999-12-07 Siemens Aktiengesellschaft Current limiting device

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4955069A (en) * 1989-03-02 1990-09-04 Ionescu Adrian F A.C. power controller with short circuit and overload protection
US5023692A (en) * 1989-12-07 1991-06-11 Harris Semiconductor Patents, Inc. Power MOSFET transistor circuit
US5999387A (en) * 1993-09-08 1999-12-07 Siemens Aktiengesellschaft Current limiting device

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102012210600B4 (en) 2012-06-22 2023-03-02 Robert Bosch Gmbh Charging and/or disconnecting device for a battery system
FR3006515A1 (en) * 2013-05-31 2014-12-05 Airbus Operations Sas ELECTRICAL PROTECTION USING A SEMICONDUCTOR SWITCH.
US9923366B2 (en) 2013-05-31 2018-03-20 Airbus Operations (S.A.S.) Electrical protection using a semiconductor switch
FR3058277A1 (en) * 2016-10-28 2018-05-04 Airbus Operations (S.A.S.) SYSTEM AND METHOD FOR MANAGING SHORT CIRCUITS IN A MAINS NETWORK FOR DISTRIBUTING ELECTRICAL ENERGY OF AN AIRCRAFT
US10622806B2 (en) 2016-10-28 2020-04-14 Airbus Operations Sas System and method for managing short-circuits in a meshed electrical energy distribution network of an aircraft
US20220281608A1 (en) * 2021-03-03 2022-09-08 Rolls-Royce Plc Electrical power systems
US11628943B2 (en) * 2021-03-03 2023-04-18 Rolls-Royce Plc Electrical power systems
US11634234B2 (en) 2021-03-03 2023-04-25 Rolls-Royce Plc Electrical power systems
US11643940B2 (en) 2021-03-03 2023-05-09 Rolls-Royce Plc Electrical power systems
US11828186B2 (en) 2021-03-03 2023-11-28 Rolls-Royce Plc Electrical power systems

Also Published As

Publication number Publication date
GB201006055D0 (en) 2010-05-26

Similar Documents

Publication Publication Date Title
US9735573B2 (en) DC-power system with system protection capabilities
US9972997B2 (en) Circuit interruption device
US9692226B2 (en) Circuit interruption device
KR101463044B1 (en) Self power circuit for protecting relay
GB2479535A (en) Current limiter for a vehicle power distribution network
US9530588B2 (en) Circuit breaking arrangement
US9893057B2 (en) Monolithically integrated semiconductor switch, particularly circuit breaker
Miao et al. A self-powered bidirectional DC solid state circuit breaker using two normally-on SiC JFETs
CA2939740A1 (en) Systems, methods, and devices for bipolar high voltage direct current electrical power distribution
Komatsu Approach and basic evaluation for the DC circuit breaker with fault current limiting feature
Kim et al. A new reclosing and re-breaking DC thyristor circuit breaker for DC distribution applications
US20200144807A1 (en) Redundant protection system for a hybrid electrical system
US11289895B2 (en) Multi-stage protection device for the overcurrent- and overvoltage-protected transfer of electrical energy
US11276999B2 (en) Multistage protective device for overcurrent- and overvoltage-protected transmission of electrical energy
Komatsu Basic evaluation for the dc circuit breaker using power semiconductor with fault current limiting feature
CA2755757C (en) Power controller system
Cairoli et al. Ground fault protection for DC bus using controlled power sequencing
Solangi et al. Selective coordination of GaN-based solid state circuit breakers
KR101431659B1 (en) Distribution switchboard with multi protection device
Prigmore et al. An IGCT-based electronic circuit breaker design for a 12.47 kV distribution system
US11689194B2 (en) Power supply device for protective relay
US8416550B1 (en) Solid state breaker circuit for direct current applications
RU2684762C2 (en) System of interruption of chain for chains of high and superhigh voltage
Lulbadda et al. Protection Schemes of Solid State Transformers for Different Fault Conditions
Nain et al. Smart Grid Performance Improvement with AC Solid-State Circuit Breaker having Charging and Rebreaking Capabilities

Legal Events

Date Code Title Description
WAP Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1)